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<meta charset="utf-8" /><meta name="hf:doc:metadata" content="{&quot;title&quot;:&quot;Carregando kernels&quot;,&quot;local&quot;:&quot;loading-kernels&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Kernels de atenção&quot;,&quot;local&quot;:&quot;attention-kernels&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Fallback do FlashAttention&quot;,&quot;local&quot;:&quot;flashattention-fallback&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3}],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Consciência do modo&quot;,&quot;local&quot;:&quot;mode-awareness&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;KernelConfig&quot;,&quot;local&quot;:&quot;kernelconfig&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Metadados do kernel&quot;,&quot;local&quot;:&quot;kernel-metadata&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3},{&quot;title&quot;:&quot;Mapeamentos herdados&quot;,&quot;local&quot;:&quot;inherited-mappings&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3}],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Fusão de módulos&quot;,&quot;local&quot;:&quot;module-fusion&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Kernels locais&quot;,&quot;local&quot;:&quot;local-kernels&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Desativar kernels globalmente&quot;,&quot;local&quot;:&quot;disable-kernels-globally&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Solução de problemas&quot;,&quot;local&quot;:&quot;troubleshooting&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Problemas de instalação&quot;,&quot;local&quot;:&quot;installation-issues&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3},{&quot;title&quot;:&quot;Falhas no carregamento de kernels&quot;,&quot;local&quot;:&quot;kernel-loading-failures&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3},{&quot;title&quot;:&quot;Compatibilidade de dispositivos&quot;,&quot;local&quot;:&quot;device-compatibility&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3}],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Recursos&quot;,&quot;local&quot;:&quot;resources&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2}],&quot;depth&quot;:1}"/>
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		<!--1lte17--><meta name="hf:doc:metadata" content="{&quot;title&quot;:&quot;Loading kernels&quot;,&quot;local&quot;:&quot;loading-kernels&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Attention kernels&quot;,&quot;local&quot;:&quot;attention-kernels&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;FlashAttention fallback&quot;,&quot;local&quot;:&quot;flashattention-fallback&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3}],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Mode-awareness&quot;,&quot;local&quot;:&quot;mode-awareness&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;KernelConfig&quot;,&quot;local&quot;:&quot;kernelconfig&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Kernel metadata&quot;,&quot;local&quot;:&quot;kernel-metadata&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3},{&quot;title&quot;:&quot;Inherited mappings&quot;,&quot;local&quot;:&quot;inherited-mappings&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3}],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Module fusion&quot;,&quot;local&quot;:&quot;module-fusion&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Local kernels&quot;,&quot;local&quot;:&quot;local-kernels&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Disable kernels globally&quot;,&quot;local&quot;:&quot;disable-kernels-globally&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Troubleshooting&quot;,&quot;local&quot;:&quot;troubleshooting&quot;,&quot;sections&quot;:[{&quot;title&quot;:&quot;Installation issues&quot;,&quot;local&quot;:&quot;installation-issues&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3},{&quot;title&quot;:&quot;Kernel loading failures&quot;,&quot;local&quot;:&quot;kernel-loading-failures&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3},{&quot;title&quot;:&quot;Device compatibility&quot;,&quot;local&quot;:&quot;device-compatibility&quot;,&quot;sections&quot;:[],&quot;depth&quot;:3}],&quot;depth&quot;:2},{&quot;title&quot;:&quot;Resources&quot;,&quot;local&quot;:&quot;resources&quot;,&quot;sections&quot;:[],&quot;depth&quot;:2}],&quot;depth&quot;:1}"/><!---->
		<link href="/docs/transformers/main/en/_app/immutable/assets/0.tn0RQdqM.css" rel="modulepreload"> <!--[--><!--[0--><!--[--><!--[0--><!--[--><p></p> <div class="items-center shrink-0 min-w-[100px] max-sm:min-w-[50px] justify-end ml-auto flex" style="float: inline-end; margin-inline-start: 10px; display: inline-flex; position: relative; z-index: 10;"><div dir="ltr" class="inline-flex rounded-md max-sm:rounded-sm"><button class="inline-flex items-center gap-1 h-7 max-sm:h-7 px-2 max-sm:px-1.5 text-sm font-medium text-gray-800 border border-r-0 rounded-l-md max-sm:rounded-l-sm border-gray-200 bg-white hover:shadow-inner dark:border-gray-850 dark:bg-gray-950 dark:text-gray-200 dark:hover:bg-gray-800" aria-live="polite"><span class="inline-flex items-center justify-center rounded-md p-0.5 max-sm:p-0 hover:text-gray-800 dark:hover:text-gray-200"><svg class="sm:size-3.5 size-3" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----></span> <span dir="auto">Copy page</span></button> <button class="inline-flex items-center justify-center w-6 max-sm:w-5 h-7 max-sm:h-7 disabled:pointer-events-none text-sm text-gray-500 hover:text-gray-700 dark:hover:text-white rounded-r-md max-sm:rounded-r-sm border border-l transition border-gray-200 bg-white hover:shadow-inner dark:border-gray-850 dark:bg-gray-950 dark:text-gray-200 dark:hover:bg-gray-800" aria-haspopup="menu" aria-expanded="false" aria-label="Open copy menu"><svg class="transition-transform text-gray-400 overflow-visible sm:size-3.5 size-3 rotate-0" width="1em" height="1em" viewBox="0 0 12 7" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M1 1L6 6L11 1" stroke="currentColor"></path></svg><!----></button></div> <!--[-1--><!--]--></div><!----> <!--[0--><h1 class="relative group"><a id="loading-kernels" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#loading-kernels"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Carregando kernels<!----></span></h1><!--]--><!----> <p>Um kernel funciona como uma substituição direta para as operações padrão do PyTorch. Ele substitui o método <code>forward</code> pela implementação otimizada do kernel sem quebrar o código do modelo.</p> <p>Este guia mostra como carregar kernels para acelerar a inferência.</p> <p>Instale o Transformers com a versão suportada do pacote <a href="https://github.com/huggingface/kernels" rel="nofollow">kernels</a>.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-bash "><!---->pip install -U <span class="hljs-string">&quot;transformers[kernels]&quot;</span><!----></pre></div><!----> <p>Defina <code>use_kernels=True</code> em <a href="/docs/transformers/main/pt/main_classes/model#transformers.PreTrainedModel.from_pretrained">from_pretrained()</a> para carregar os kernels mais performáticos disponíveis no Hub para o seu dispositivo. Isso substitui as operações suportadas do PyTorch pela implementação do kernel.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM

model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    use_kernels=<span class="hljs-literal">True</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)<!----></pre></div><!----> <p>O mapeamento padrão depende do modelo, do dispositivo e do modo de execução. A tabela abaixo lista os repositórios comuns do Hub para os dispositivos mostrados. Quando nenhum kernel está registrado para uma combinação específica, a operação recorre ao PyTorch padrão.</p> <table><thead><tr><th>Operação</th><th>NVIDIA (CUDA)</th><th>AMD (ROCm)</th><th>Intel (XPU)</th></tr></thead><tbody><tr><td>RMSNorm</td><td><code>kernels-community/liger-kernels</code></td><td><code>kernels-community/liger-kernels</code></td><td><code>kernels-community/rmsnorm</code></td></tr><tr><td>MLP de MoE</td><td><code>kernels-community/megablocks</code></td><td><code>kernels-community/megablocks</code></td><td><code>kernels-community/megablocks</code></td></tr><tr><td>MLP (SwiGLU, GeGLU)</td><td><code>kernels-community/liger-kernels</code></td><td>—</td><td>—</td></tr><tr><td>Linear</td><td><code>kernels-community/liger-kernels</code></td><td>—</td><td>—</td></tr><tr><td>Ativações (variantes de GELU, SiLU)</td><td><code>kernels-community/activation</code></td><td>—</td><td>—</td></tr><tr><td>Incorporações rotativas</td><td><code>kernels-community/rotary</code></td><td><code>kernels-community/aiter-rope</code></td><td><code>kernels-community/rotary</code></td></tr><tr><td>Perda do LM causal</td><td><code>kernels-community/liger-kernels</code></td><td>—</td><td>—</td></tr><tr><td>Atenção deformável</td><td><code>kernels-community/deformable-detr</code></td><td>—</td><td>—</td></tr></tbody></table> <p>A tabela não é exaustiva. Os modelos podem registrar camadas e funções adicionais, e alguns mapeamentos estão disponíveis apenas para modos de execução específicos.</p> <blockquote class="note"><p>GPUs da AMD relatam seu tipo de dispositivo como <code>cuda</code> no PyTorch. O Transformers detecta o ROCm em tempo de execução e direciona as operações suportadas para os kernels da AMD acima, incluindo builds do <a href="https://github.com/ROCm/aiter" rel="nofollow">AITER</a>, como <code>kernels-community/aiter-rope</code>. Você não precisa definir o tipo de dispositivo manualmente.</p></blockquote> <p>Navegue pelos kernels disponíveis na organização <a href="https://huggingface.co/kernels-community" rel="nofollow">kernels-community</a>.</p> <!--[1--><h2 class="relative group"><a id="attention-kernels" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#attention-kernels"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Kernels de atenção<!----></span></h2><!--]--><!----> <p>Carregue kernels de atenção do Hub com o argumento <code>attn_implementation</code>.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM

model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    attn_implementation=<span class="hljs-string">&quot;kernels-community/flash-attn2&quot;</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)<!----></pre></div><!----> <p>Observe que, para kernels de atenção, qualquer coisa que não faça parte do repositório <code>kernels-community</code> (que é confiável – podemos adicionar mais repositórios confiáveis no futuro) exigirá o uso de um kwarg adicional <code>allow_all_kernels=True</code> (similar ao kwarg <code>trust_remote_code=True</code> para modelos não-HF). Isso ocorre porque o carregamento de um kernel pode levar à execução de código arbitrário na máquina host, e não podemos verificar todos os repositórios, portanto, você precisa permitir isso explicitamente.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM

model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    attn_implementation=<span class="hljs-string">&quot;random-repo/random-attention&quot;</span>,
    allow_all_kernels=<span class="hljs-literal">True</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)<!----></pre></div><!----> <p>Kernels específicos, como attention, aceitam vários formatos.</p> <ul><li><code>@v2.1.0</code> fixa uma tag ou branch específica.</li> <li><code>@>=2.0,&lt;3.0</code> define restrições de versionamento semântico.</li></ul> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM

<span class="hljs-comment"># pin to a specific version</span>
model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    attn_implementation=<span class="hljs-string">&quot;kernels-community/flash-attn2@v2.1.0&quot;</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)
<span class="hljs-comment"># use semantic versioning constraints</span>
model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    attn_implementation=<span class="hljs-string">&quot;kernels-community/flash-attn2@&gt;=2.0,&lt;3.0&quot;</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)<!----></pre></div><!----> <!--[2--><h3 class="relative group"><a id="flashattention-fallback" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#flashattention-fallback"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Fallback do FlashAttention<!----></span></h3><!--]--><!----> <p>Solicitar <code>attn_implementation="flash_attention_2"</code>, <code>"flash_attention_3"</code> ou <code>"flash_attention_4"</code> recorre ao kernel correspondente do Hub quando o pacote <code>flash-attn</code> compilado não está instalado ou quando seu dispositivo não é CUDA.</p> <blockquote class="note"><p>O suporte ao FlashAttention-4 está em beta. As APIs e o comportamento podem mudar.</p></blockquote> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM

<span class="hljs-comment"># uses the compiled flash-attn package if present, otherwise the kernels-community/flash-attn2 Hub kernel</span>
model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    attn_implementation=<span class="hljs-string">&quot;flash_attention_2&quot;</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>,
)<!----></pre></div><!----> <!--[1--><h2 class="relative group"><a id="mode-awareness" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#mode-awareness"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Consciência do modo<!----></span></h2><!--]--><!----> <p>Os kernels se adaptam automaticamente aos modos de <a href="https://docs.pytorch.org/docs/stable/generated/torch.nn.Module.html#torch.nn.Module.train" rel="nofollow">treinamento</a> e <a href="https://docs.pytorch.org/docs/stable/generated/torch.nn.Module.html#torch.nn.Module.eval" rel="nofollow">inferência</a> com base no estado <code>model.training</code> do PyTorch.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">import</span> torch
<span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM

model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    use_kernels=<span class="hljs-literal">True</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)

<span class="hljs-comment"># Switch to inference mode - uses inference-optimized kernels</span>
model.<span class="hljs-built_in">eval</span>()
<span class="hljs-keyword">with</span> torch.no_grad():
    output = model.generate(input_ids, max_new_tokens=<span class="hljs-number">50</span>)

<span class="hljs-comment"># Switch to training mode - uses training-optimized kernels with gradient support</span>
model.train()
loss = model(input_ids, labels=labels).loss
loss.backward()<!----></pre></div><!----> <p>Ative explicitamente os modos de treinamento e inferência com o argumento <code>mode</code> na função <a href="/docs/transformers/main/pt/main_classes/kernels#transformers.kernelize">kernelize()</a>. O modo de treinamento também suporta um modo adicional do torch.compile.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> kernels <span class="hljs-keyword">import</span> Mode
<span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> kernelize

<span class="hljs-comment"># inference optimized kernels</span>
kernelize(model, mode=Mode.INFERENCE)

<span class="hljs-comment"># training optimized kernels</span>
kernelize(model, mode=Mode.TRAINING)

<span class="hljs-comment"># training and torch-compile friendly kernels</span>
kernelize(model, mode=Mode.TRAINING | Mode.TORCH_COMPILE)<!----></pre></div><!----> <!--[1--><h2 class="relative group"><a id="kernelconfig" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#kernelconfig"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->KernelConfig<!----></span></h2><!--]--><!----> <p><a href="/docs/transformers/main/pt/main_classes/kernels#transformers.KernelConfig">KernelConfig</a> personaliza quais kernels são usados em um modelo.</p> <p>As chaves de <code>kernel_mapping</code> são nomes registrados pelo modelo. Elas podem se referir a uma camada, como <code>"RMSNorm"</code>, ou a uma função registrada, como <code>"rotary_pos_emb"</code>. O separador <code>:</code> nomeia uma entrada de kernel específica dentro do repositório e a mapeia para aquela camada ou função.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM, KernelConfig

kernel_config = KernelConfig(
    kernel_mapping={
        <span class="hljs-string">&quot;RMSNorm&quot;</span>: <span class="hljs-string">&quot;kernels-community/liger-kernels:LigerRMSNorm&quot;</span>,
    }
)
model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    attn_implementation=<span class="hljs-string">&quot;kernels-community/flash-attn2&quot;</span>,
    use_kernels=<span class="hljs-literal">True</span>,
    kernel_config=kernel_config,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>
)<!----></pre></div><!----> <p>Especifique diferentes implementações de kernel para cada tipo de dispositivo.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> KernelConfig

kernel_config = KernelConfig(
    kernel_mapping={
        <span class="hljs-string">&quot;RMSNorm&quot;</span>: {
            <span class="hljs-string">&quot;cuda&quot;</span>: <span class="hljs-string">&quot;kernels-community/liger-kernels:LigerRMSNorm&quot;</span>,
            <span class="hljs-string">&quot;rocm&quot;</span>: <span class="hljs-string">&quot;kernels-community/liger-kernels:LigerRMSNorm&quot;</span>,
            <span class="hljs-string">&quot;xpu&quot;</span>: <span class="hljs-string">&quot;kernels-community/rmsnorm:RMSNorm&quot;</span>
        }
    }
)<!----></pre></div><!----> <!--[2--><h3 class="relative group"><a id="kernel-metadata" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#kernel-metadata"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Metadados do kernel<!----></span></h3><!--]--><!----> <p>Adicione um dicionário de metadados para controlar qual build do kernel é carregada.</p> <table><thead><tr><th>Opção</th><th>Descrição</th><th>Padrão</th></tr></thead><tbody><tr><td><code>version</code></td><td>Versão principal do repositório do kernel. <code>2</code> carrega o build mais recente no ramo <code>v2</code> do repositório.</td><td><code>1</code></td></tr><tr><td><code>revision</code></td><td>Tag, branch ou commit exato para carregar em vez de uma versão.</td><td>---</td></tr><tr><td><code>trust_remote_code</code></td><td>Permite um repositório fora da organização confiável <code>kernels-community</code>. Carregar um kernel executa código desse repositório na sua máquina.</td><td><code>False</code></td></tr></tbody></table> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> KernelConfig

kernel_config = KernelConfig(
    kernel_mapping={
        <span class="hljs-string">&quot;RMSNorm&quot;</span>: (<span class="hljs-string">&quot;kernels-community/liger-kernels:LigerRMSNorm&quot;</span>, {<span class="hljs-string">&quot;version&quot;</span>: <span class="hljs-number">3</span>}),
    }
)<!----></pre></div><!----> <p>Ramificações mais antigas de um repositório de kernel podem não ter builds para as suas versões de PyTorch e CUDA. Se um kernel falhar ao carregar, tente uma <code>version</code> mais recente antes de concluir que o seu hardware não é suportado.</p> <!--[2--><h3 class="relative group"><a id="inherited-mappings" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#inherited-mappings"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Mapeamentos herdados<!----></span></h3><!--]--><!----> <p>Um <code>KernelConfig</code> herda o mapeamento de kernels padrão do Transformers para kernels do Hub, e as entradas em <code>kernel_mapping</code> substituem o padrão para as camadas e funções correspondentes. Defina <code>inherit_mapping=False</code> para usar apenas as entradas em <code>kernel_mapping</code>. Tudo o que você deixar de fora volta ao PyTorch padrão. Isso é útil ao fazer benchmark de um kernel específico ou ao testar uma implementação personalizada sem aplicar os outros padrões.</p> <p>A configuração abaixo mapeia a função <code>rotary_pos_emb</code> para um kernel RoPE e mantém todas as outras operações no PyTorch. O nome da função deve ser registrado pelo modelo.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM, KernelConfig

kernel_config = KernelConfig(
    kernel_mapping={
        <span class="hljs-string">&quot;rotary_pos_emb&quot;</span>: (
            <span class="hljs-string">&quot;kernels-community/rotary:apply_rotary_transformers&quot;</span>,
            {<span class="hljs-string">&quot;version&quot;</span>: <span class="hljs-number">2</span>},
        ),
    },
    inherit_mapping=<span class="hljs-literal">False</span>,
)

model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    use_kernels=<span class="hljs-literal">True</span>,
    kernel_config=kernel_config,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>,
)<!----></pre></div><!----> <!--[1--><h2 class="relative group"><a id="module-fusion" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#module-fusion"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Fusão de módulos<!----></span></h2><!--]--><!----> <p>Fusione módulos adjacentes em um único kernel passando uma tupla de pares <code>(class_name, path_pattern)</code> como chave em <a href="/docs/transformers/main/pt/main_classes/kernels#transformers.KernelConfig">KernelConfig</a>. Todos os padrões devem compartilhar o mesmo módulo pai. <code>*</code> corresponde a qualquer segmento único de caminho.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-python "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForCausalLM, KernelConfig

kernel_config = KernelConfig(
    {
        (
            (<span class="hljs-string">&quot;RMSNorm&quot;</span>, <span class="hljs-string">&quot;model.layers.*.post_attention_layernorm&quot;</span>),
            (<span class="hljs-string">&quot;MLP&quot;</span>,     <span class="hljs-string">&quot;model.layers.*.mlp&quot;</span>),
        ): <span class="hljs-string">&quot;owner/fused-rmsnorm-mlp:RMSNormMLP&quot;</span>,
    }
)
model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    use_kernels=<span class="hljs-literal">True</span>,
    kernel_config=kernel_config,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>,
)<!----></pre></div><!----> <p>O Fusion exige que o repositório do kernel forneça uma classe <code>KernelNameLayout</code> complementar junto com a classe <code>KernelName</code>. Consulte o guia <a href="./writing_kernels">Writing kernels</a> para saber como implementar uma.</p> <!--[1--><h2 class="relative group"><a id="local-kernels" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#local-kernels"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Kernels locais<!----></span></h2><!--]--><!----> <p>Carregue kernels a partir de caminhos de arquivo locais com <code>use_local_kernel=True</code> em <a href="/docs/transformers/main/pt/main_classes/kernels#transformers.KernelConfig">KernelConfig</a>. Isso carrega de um caminho do sistema de arquivos local em vez de um repositório do Hub.</p> <p>Kernels locais usam <code>/abs/path:layer_name</code> em vez do formato do Hub <code>org/repo:layer_name</code>.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> KernelConfig, AutoModelForCausalLM

kernel_mapping = {
    <span class="hljs-string">&quot;RMSNorm&quot;</span>: <span class="hljs-string">&quot;/path/to/liger-kernels:LigerRMSNorm&quot;</span>,
}
kernel_config = KernelConfig(kernel_mapping, use_local_kernel=<span class="hljs-literal">True</span>)

model = AutoModelForCausalLM.from_pretrained(
    <span class="hljs-string">&quot;Qwen/Qwen3-0.6B&quot;</span>,
    dtype=<span class="hljs-string">&quot;auto&quot;</span>,
    device_map=<span class="hljs-string">&quot;auto&quot;</span>,
    use_kernels=<span class="hljs-literal">True</span>,
    kernel_config=kernel_config
)<!----></pre></div><!----> <!--[1--><h2 class="relative group"><a id="disable-kernels-globally" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#disable-kernels-globally"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Desativar kernels globalmente<!----></span></h2><!--]--><!----> <p>Defina a variável de ambiente <code>USE_HUB_KERNELS</code> para desativar os kernels do Hub em todos os lugares sem alterar seu código.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-bash "><!----><span class="hljs-built_in">export</span> USE_HUB_KERNELS=0  <span class="hljs-comment"># or OFF or NO</span><!----></pre></div><!----> <!--[1--><h2 class="relative group"><a id="troubleshooting" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#troubleshooting"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Solução de problemas<!----></span></h2><!--]--><!----> <p>A integração do kernel depende do funcionamento conjunto do hardware, dos drivers e das versões dos pacotes. As seções a seguir abordam falhas comuns.</p> <!--[2--><h3 class="relative group"><a id="installation-issues" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#installation-issues"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Problemas de instalação<!----></span></h3><!--]--><!----> <p>Erros de importação indicam que o pacote de kernels está ausente ou que sua versão está fora da faixa suportada pelo Transformers. Reinstale por meio do extra para obter uma versão compatível.</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5   text-gray-600  " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> Copiado</div><!----></button><!----></div> <pre class="language-bash "><!---->pip install -U <span class="hljs-string">&quot;transformers[kernels]&quot;</span><!----></pre></div><!----> <!--[2--><h3 class="relative group"><a id="kernel-loading-failures" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#kernel-loading-failures"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Falhas no carregamento de kernels<!----></span></h3><!--]--><!----> <p>Se kernels específicos falharem ao carregar, tente o seguinte.</p> <ul><li>Verifique a compatibilidade do seu hardware com os requisitos do kernel.</li> <li>Verifique se seus drivers CUDA/ROCm/Metal estão atualizados.</li> <li>Consulte a documentação do repositório do kernel para problemas conhecidos.</li></ul> <!--[2--><h3 class="relative group"><a id="device-compatibility" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#device-compatibility"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Compatibilidade de dispositivos<!----></span></h3><!--]--><!----> <p>Nem todos os kernels suportam todos os dispositivos. A biblioteca recorre às operações padrão do PyTorch quando um kernel não está disponível para o seu hardware. Consulte a documentação do repositório de kernels para verificar o suporte específico a cada dispositivo.</p> <!--[1--><h2 class="relative group"><a id="resources" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#resources"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->Recursos<!----></span></h2><!--]--><!----> <ul><li>repositório <a href="https://github.com/huggingface/kernels" rel="nofollow">Kernels</a></li> <li>post no blog <a href="https://huggingface.co/blog/hello-hf-kernels" rel="nofollow">Reforce seus modelos em 5 minutos com o Hugging Face Kernel Hub</a></li> <li>Descubra kernels na organização <a href="https://huggingface.co/kernels-community" rel="nofollow">kernels-community</a></li></ul> <a class="!text-gray-400 !no-underline text-sm flex items-center not-prose mt-4" href="https://github.com/huggingface/transformers/blob/main/docs/source/en/kernel_doc/loading_kernels.md" target="_blank"><svg class="mr-1" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M31,16l-7,7l-1.41-1.41L28.17,16l-5.58-5.59L24,9l7,7z"></path><path d="M1,16l7-7l1.41,1.41L3.83,16l5.58,5.59L8,23l-7-7z"></path><path d="M12.419,25.484L17.639,6.552l1.932,0.518L14.351,26.002z"></path></svg><!----> <span><span class="underline">Update</span> on GitHub</span></a><!----> <p></p><!--]--><!----><!--]--><!--]--><!--]--> <!--[-1--><!--]--><!--]-->
			
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