fla / build /torch-cuda /utils /__init__.py
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# Copyright (c) 2023-2026, Songlin Yang, Yu Zhang, Zhiyuan Li
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
# For a list of all contributors, visit:
# https://github.com/fla-org/flash-linear-attention/graphs/contributors
from ..utils.decorators import (
Action,
checkpoint,
contiguous,
deprecate_kwarg,
input_guard,
require_version,
tensor_cache,
)
from ..utils.env import (
FLA_CACHE_RESULTS,
FLA_CI_ENV,
FLA_DISABLE_TENSOR_CACHE,
FLA_TENSOR_CACHE_SIZE,
SUPPORTS_AUTOTUNE_CACHE,
TRITON_ABOVE_3_4_0,
TRITON_ABOVE_3_5_1,
TRITON_ABOVE_3_6_0,
TRITON_ABOVE_3_7_1,
TRITON_ABOVE_3_8_0,
autotune_cache_kwargs,
check_environments,
check_pytorch_version,
check_transformers_version,
find_spec_cached,
has_usable_nvcc,
supports_transformers_next_sequence_length,
)
from ..utils.hardware import (
IS_AMD,
IS_AMD_TMA_ARCH,
IS_ARM,
IS_GATHER_SUPPORTED,
IS_INTEL,
IS_INTEL_ALCHEMIST,
IS_NPU,
IS_NVIDIA,
IS_NVIDIA_BLACKWELL,
IS_NVIDIA_HOPPER,
IS_NVIDIA_SM100,
IS_NVIDIA_SM120,
IS_TF32_SUPPORTED,
IS_TMA_SUPPORTED,
Backend,
autocast_custom_bwd,
autocast_custom_fwd,
check_shared_mem,
custom_device_ctx,
device,
device_name,
device_platform,
device_torch_lib,
get_all_max_shared_mem,
get_available_device,
get_device_arch,
get_device_capability,
get_device_smem_optin,
get_multiprocessor_count,
map_triton_backend_to_torch_device,
)
from ..utils.testing import assert_close, get_abs_err, get_err_ratio
is_amd = IS_AMD
is_amd_tma_arch = IS_AMD_TMA_ARCH
is_arm = IS_ARM
is_intel = IS_INTEL
is_intel_alchemist = IS_INTEL_ALCHEMIST
is_nvidia = IS_NVIDIA
is_npu = IS_NPU
is_nvidia_blackwell = IS_NVIDIA_BLACKWELL
is_nvidia_hopper = IS_NVIDIA_HOPPER
is_nvidia_sm100 = IS_NVIDIA_SM100
is_nvidia_sm120 = IS_NVIDIA_SM120
is_tf32_supported = IS_TF32_SUPPORTED
is_gather_supported = IS_GATHER_SUPPORTED
is_tma_supported = IS_TMA_SUPPORTED