Hugo0713/cdeval-flux2-dev-shard-1300

CDEval FLUX.2-dev shard — 1,300 scenario groups (7,800 images)

One non-overlapping shard of a CDEval text-to-image generation run, produced with FLUX.2-dev at fixed research settings. 7,800 images, 1024×1024 RGB PNG, strictly verified: every task has exactly one image and one manifest record, zero failures.

The shard is distributed as a single compressed archive rather than a flat file tree, so that the SHA-256 recorded at production time stays verifiable end to end.

File	Size	SHA-256
flux2-pro6000-shard-1300-20260906T124448Z.tar.zst	11 GB	f830d00dfd3622d7fd6499b6046243ded3137bf10384d476d416515ff0fb9e3f
flux2-pro6000-shard-1300-20260906T124448Z.tar.zst.sha256	151 B	checksum file

Download and verify

hf download Hugo0713/cdeval-flux2-dev-shard-1300 --repo-type dataset --local-dir .
sha256sum flux2-pro6000-shard-1300-20260906T124448Z.tar.zst
# expect f830d00dfd3622d7fd6499b6046243ded3137bf10384d476d416515ff0fb9e3f
tar --use-compress-program=unzstd -xf flux2-pro6000-shard-1300-20260906T124448Z.tar.zst

Shard definition

The last 1,300 complete canonical scenario groups in manifest order, from cdeval_mas_0195 to cdeval_uai_0530. Each group contributes 6 tasks, one per condition, so the shard is exactly balanced:

Condition	Tasks
en_us__none	1,300
en_us__us	1,300
en_us__cn	1,300
zh_cn__none	1,300
zh_cn__us	1,300
zh_cn__cn	1,300

An overlap audit against the central producer at 2026-09-05T05:13:47Z (1,448 artifacts at that point) found zero intersecting task IDs.

• Source prompt manifest SHA-256: a07ff01a29673f9e7cc27124c0518af4d12ebeab5c448274c6b4f856e6bd4315
• prompts/tasks.jsonl SHA-256: 4846c91ebd02aa2520f7ee266ae85ad68413518fc54119e6840ea22fc8fdd8e6

Generation settings

Nothing was reduced from the reference configuration; every value below is pinned.

Setting	Value
Model	black-forest-labs/FLUX.2-dev
Model revision	26afe3a78bb242c0a8bb181dcc8937bb16e5c66c
Weight dtype	bfloat16 (no quantization)
Inference steps	50
Guidance scale	4.0
Seed	20260728 (fixed)
Size	1024×1024
Repetitions	1
Runtime	SGLang multimodal_gen, revision 3ab8ae684772f39ab35feb40a29ab33beed4547d
Runtime patch SHA-256	6d17c2212ceb778559b7a781e218f9701abc1d1c02c2f68ea5ec54ddb34c1160
Attention backend	torch_sdpa

Reproducibility was checked before production: the same prompt and seed produced a byte-identical image (SHA-256 805d3d79…) on all eight endpoints.

Hardware

Produced on a single node with 8 × NVIDIA RTX PRO 6000 Blackwell Server Edition (96 GiB), one SGLang endpoint per GPU on loopback, FSDP inference without DiT CPU offload. PyTorch 2.9.1+cu128, driver 580.126.20. Wall-clock 16 h 01 m at ≈504 images/hour.

Archive contents

outputs/flux2-pro6000-shard-1300/
  images/flux_2_dev_local/   7,800 PNGs, named <task_id>__<scenario>__<condition>__raw__trial_01__image.png
  artifacts/images/          7,800 per-image JSON records
  manifests/images.jsonl     one manifest row per task
  manifests/image_generation_failures.jsonl   (empty)
  run.json
prompts/tasks.jsonl, prompts/shard.json
config/experiment.json
runtime/deployment.json, smoke-report.json, final-verification.json,
        environment.freeze.txt, installation.txt, model-verification.txt, audits/

runtime/ carries the deployment provenance (per-endpoint GPU UUIDs, driver, node, package freeze) so that a consumer can confirm which machine and stack produced the images.

Verification report

{
  "artifact_count": 7800, "image_count": 7800, "manifest_count": 7800,
  "unique_task_ids": 7800, "unique_image_ids": 7800,
  "failure_count": 0, "error_count": 0,
  "unreferenced_images": [], "allow_incomplete": false, "valid": true
}

Licensing and intended use

The images are outputs of FLUX.2-dev and are subject to the FLUX.2-dev Non-Commercial License. This shard is research material for cultural-dimension evaluation (CDEval); it is not a curated or human-reviewed corpus, and the images carry whatever biases the model and the prompt set carry. Do not treat any image as a factual depiction.