Text-to-Image
Diffusers
Safetensors
English
Chinese
QwenImage21Pipeline
bitsandbytes
int8
image-generation
image-editing
rgba
8-bit precision
Instructions to use ixim/Image21-INT8 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Diffusers
How to use ixim/Image21-INT8 with Diffusers:
pip install -U diffusers transformers accelerate
import torch from diffusers import DiffusionPipeline # switch to "mps" for apple devices pipe = DiffusionPipeline.from_pretrained("ixim/Image21-INT8", dtype=torch.bfloat16, device_map="cuda") prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k" image = pipe(prompt).images[0] - Notebooks
- Google Colab
- Kaggle
- Local Apps Settings
- Draw Things
- DiffusionBee
File size: 7,888 Bytes
e9190ff | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | """Independent-seed editing evaluation; run each precision in a fresh process.
Historical benchmark_edits.py is retained byte-for-byte for reproduction.
"""
import argparse
import gc
import inspect
import json
import os
import time
from pathlib import Path
import torch
from scripts.benchmark import environment, load_pipeline, memory_status
from scripts.editing_protocol import (PROTOCOL, DEFAULT_SEEDS, validate_seeds, load_input,
edit_dimensions, image_diagnostics, save_diagnostics)
from scripts.integrity import sha256
from scripts.provenance import model_identity
def main():
ap = argparse.ArgumentParser(__doc__)
ap.add_argument('--model', required=True)
ap.add_argument('--inputs', required=True)
ap.add_argument('--output', required=True)
ap.add_argument('--cases', default='benchmarks/editing-v2.json')
ap.add_argument('--case', nargs='+')
ap.add_argument('--seeds', type=int, nargs='+', default=list(DEFAULT_SEEDS))
ap.add_argument('--resolution', type=int, default=1024, help='Square root of target area; preserve input aspect ratio')
ap.add_argument('--steps', type=int, default=40)
ap.add_argument('--vae-tiling', action=argparse.BooleanOptionalAction, default=False)
ap.add_argument('--kv-cache', action=argparse.BooleanOptionalAction, default=True)
ap.add_argument('--no-warmup', action='store_true', help='Diagnostic runs only; excludes latency comparisons')
ap.add_argument('--save-latents', action='store_true', help='Retain decoder input for one-variable VAE diagnosis')
args = ap.parse_args()
if args.steps <= 0:
ap.error('Positive steps required')
cases = json.loads(Path(args.cases).read_text(encoding='utf-8'))
if args.case:
if set(args.case) - {c['id'] for c in cases}:
ap.error('Unknown case')
cases = [c for c in cases if c['id'] in args.case]
if not cases or len({c['id'] for c in cases}) != len(cases):
ap.error('Nonempty distinct cases required')
validate_seeds(cases, args.seeds)
# Validate all inputs before allocating CUDA or creating an output directory.
inputs = {}
for case in cases:
name = case['input_file']
if Path(name).name != name or Path(case['id']).name != case['id']:
ap.error('Case IDs and input files must be plain names')
path = Path(args.inputs)/name
if sha256(path) != case['input_sha256']:
raise ValueError('Input hash mismatch: '+case['id'])
inputs[case['id']] = load_input(path)
edit_dimensions(inputs[case['id']].size, args.resolution)
out = Path(args.output)
out.mkdir(parents=True, exist_ok=False)
(out/'cases.json').write_text(json.dumps(cases, ensure_ascii=False, indent=2), encoding='utf-8')
env = environment()
env.update(protocol=PROTOCOL, pid=os.getpid(), before_load_memory=memory_status(),
model_identity=model_identity(args.model), offload='model', offload_aux_fix=True,
warmup=not args.no_warmup, generator_device='cpu', seeds=args.seeds,
resolution=args.resolution, steps=args.steps, kv_cache=args.kv_cache,
vae_tiling=args.vae_tiling, cases_sha256=sha256(out/'cases.json'),
source_sha256={name: sha256(Path(__file__).with_name(name)) for name in
('benchmark_edits_v2.py', 'editing_protocol.py', 'benchmark.py', 'runtime.py')})
if env['before_load_memory']['allocated_bytes'] != 0:
raise ValueError('Expected fresh CUDA allocation baseline')
pipe = load_pipeline(args.model)
if args.vae_tiling:
pipe.vae.enable_tiling()
env.update(scheduler_config=dict(pipe.scheduler.config), vae_dtype=str(pipe.vae.dtype),
upstream_source_sha256={type(component).__name__: sha256(inspect.getfile(type(component)))
for component in (pipe, pipe.vae, pipe.transformer, pipe.scheduler)},
vae_tiles={n: getattr(pipe.vae, n) for n in
('tile_sample_min_height', 'tile_sample_min_width',
'tile_sample_stride_height', 'tile_sample_stride_width')})
(out/'environment.json').write_text(json.dumps(env, indent=2), encoding='utf-8')
def call(case, seed):
image = inputs[case['id']]
width, height = edit_dimensions(image.size, args.resolution)
with torch.inference_mode():
result = pipe(prompt=case['prompt'], image=image, width=width, height=height,
output_resolution=args.resolution, num_inference_steps=args.steps,
true_cfg_scale=1., use_kv_cache=args.kv_cache,
generator=torch.Generator('cpu').manual_seed(seed)).images[0]
if result.size != (width, height):
raise ValueError('Unexpected output dimensions')
return result
if not args.no_warmup:
warmup_seed = 1000000
while warmup_seed in args.seeds or warmup_seed in {c.get('source_seed') for c in cases}:
warmup_seed += 1
print('Full-settings warmup, excluded', flush=True)
call(cases[0], warmup_seed)
original_decode = pipe.vae.decode
for case in cases:
for seed in args.seeds:
stem = f'{case["id"]}-s{seed}'
print('Generating '+stem, flush=True)
latent_path = out/(stem+'-decode.pt')
if args.save_latents:
def decode(latents, *a, **kw):
torch.save(latents.detach().cpu(), latent_path)
return original_decode(latents, *a, **kw)
pipe.vae.decode = decode
gc.collect()
torch.cuda.empty_cache()
before = memory_status()
torch.cuda.reset_peak_memory_stats()
started = time.perf_counter()
try:
image = call(case, seed)
finally:
pipe.vae.decode = original_decode
torch.cuda.synchronize()
seconds = time.perf_counter()-started
image.save(out/(stem+'.png'))
width, height = image.size
row = dict(protocol=PROTOCOL, case_id=case['id'], category=case['category'],
prompt=case['prompt'], seed=seed, source_seed=case.get('source_seed'),
input_file=case['input_file'], input_sha256=case['input_sha256'],
input_diagnostics=image_diagnostics(inputs[case['id']]),
width=width, height=height, output_resolution=args.resolution,
steps=args.steps, cfg=1., kv_cache=args.kv_cache, vae_tiling=args.vae_tiling,
offload='model', seconds=seconds, before_memory=before,
peak_allocated_bytes=torch.cuda.max_memory_allocated(),
peak_reserved_bytes=torch.cuda.max_memory_reserved(),
image=stem+'.png', image_sha256=sha256(out/(stem+'.png')),
sigmas=pipe.scheduler.sigmas.cpu().tolist(),
latency_comparable=not args.no_warmup and not args.save_latents,
**image_diagnostics(image))
if args.save_latents:
row.update(decode_latents=latent_path.name, decode_latents_sha256=sha256(latent_path))
save_diagnostics(image, out/'diagnostics', stem)
with (out/'records.jsonl').open('a', encoding='utf-8') as stream:
stream.write(json.dumps(row, ensure_ascii=False)+'\n')
print(f'{stem}: {seconds:.2f}s', flush=True)
(out/'COMPLETE.json').write_text(json.dumps(dict(records=len(cases)*len(args.seeds),
records_sha256=sha256(out/'records.jsonl'))))
if __name__ == '__main__':
main()
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