unsloth/async_task_outputs/async_task_output_qgexvi.md

• Decision: implemented name-based GPU class detection so fp8 use_fast_accum defaults to enabled on consumer/workstation GPUs and disabled on recognized data-center GPUs; reason was user directive to maximize data-center accuracy despite measured ~8% speed loss.
• Decision: added user override transformer_quant_fast_accum because user explicitly answered Gate as I asked ... But also add it as an option for the user; default None means auto, True/False force behavior.
• Decision: token-exact GPU matching was chosen so workstation names like A4000 are not misclassified as data-center token A40.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/core/inference/diffusion_transformer_quant.py: added _is_consumer_gpu(), tri-state fast-accum resolver, and fp8 config plumbing so Float8MMConfig(... use_fast_accum=...) depends on auto/override.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/core/inference/diffusion.py: threaded transformer_quant_fast_accum through dense quant pipeline load and quantize_transformer(...).
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/models/inference.py: added request field transformer_quant_fast_accum.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/routes/inference.py: forwards new request field into backend load path.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/scripts/diffusion_bench.py: added CLI flag --fp8-fast-accum auto|on|off and forwards it.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/tests/test_diffusion_transformer_quant.py: added consumer/data-center/workstation/unknown detector tests and resolver/quantize forwarding coverage.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/tests/test_diffusion_routes.py: added route forwarding test for transformer_quant_fast_accum.
• Edited /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/temp/phase8_pr_body.md: updated PR body to describe gating and override.
• Ran python -m pytest tests/test_diffusion_transformer_quant.py -q; key output 27 passed in 0.18s.
• Ran B200 verification with CUDA_VISIBLE_DEVICES=4; key output device='NVIDIA B200' is_consumer=False, Float8MMConfig(... use_fast_accum=False ...), fp8 gen: median 0.665s.
• Ran full AST/test check: python -c "import ast; ..."; pytest ...; key output AST OK, 187 passed, 4993 deselected, 1 warning in 15.60s.
• Ran B200 override verification using scripts/diffusion_bench.py ... --fp8-fast-accum on; key output gen[0] 0.621s, gen[1] 0.608s, generate: median=0.6082s, proving override enabled fast accumulate.
• Encountered edit error String to replace not found in file. in /mnt/disks/unslothai/ubuntu/workspace_81/unsloth/studio/backend/tests/test_diffusion_transformer_quant.py; resolved by locating reformatted test with grep -n and editing the current text.
• Initial push rejected with non-fast-forward hints hint: the same ref. If you want to integrate the remote changes, use and hint: 'git pull' before pushing again.; resolved by fetch/rebase/push fallback.
• Ran sync verification: git fetch origin diffusion-phase8-quant; key output ahead/behind: 1 1, then Successfully rebased and updated refs/heads/diffusion-phase8-quant., pushed 244124d74..10db6a477, final output === final sync === 0 0.
• Ran PR update/confirmation: gh pr edit 6694 --body-file temp/phase8_pr_body.md; emitted GraphQL deprecation warning about Projects (classic). Then gh pr view 6694 --json mergeable,state,commits; key output state=OPEN mergeable=MERGEABLE commits=7.
• COMPLETED: consumer/data-center auto-gating, user override, bench CLI flag, backend/request/route plumbing, PR body update, GPU verification, tests, commit/rebase/push to PR #6694.
• COMPLETED: PR #6694 is open, mergeable, branch synced (0 0 ahead/behind), and latest pushed commit includes the changes.
• PENDING: none noted at end of span.