Update test_gpt_pp baselines for cross_entropy precision alignment#703
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zrr1999 wants to merge 3 commits intoPaddlePaddle:developfrom
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Update test_gpt_pp baselines for cross_entropy precision alignment#703zrr1999 wants to merge 3 commits intoPaddlePaddle:developfrom
zrr1999 wants to merge 3 commits intoPaddlePaddle:developfrom
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…gnment Update MD5 baseline checksums in test_gpt_pp.py to match the new gradient values produced by Paddle PR #78044, which aligns cross_entropy precision with PyTorch under FLAGS_use_accuracy_compatible_kernel. The cross_entropy grad kernel now uses AccT (MPType) arithmetic instead of native T arithmetic, which changes intermediate gradient values and propagates through the pipeline parallel backward pass. Loss MD5 remains unchanged (bce3fed95247f1b7a165e32b33d6fca7). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Re-enable TestPP that was temporarily skipped by PR PaddlePaddle#698 while waiting for Paddle PR #78013 to merge. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
test_gpt_pp.pyto match new values from Paddle PR [PAA] Align cross_entropy precision for hard-label 2D reduction under FLAGS_use_accuracy_compatible_kernel Paddle#78044AccT(MPType) arithmetic, which changes gradient values propagated through the pipeline parallel backward passbce3fed95247f1b7a165e32b33d6fca7)Context
Paddle PR #78044 aligns
cross_entropyprecision with PyTorch underFLAGS_use_accuracy_compatible_kernel. The grad kernel change (usingAccTinstead of nativeTarithmetic) affects gradient computation even in the default path, causing thetest_gpt_ppmulti-card test to fail with mismatched baseline checksums.New baseline values are taken from the CI run output of PR #78044.
Test plan
🤖 Generated with Claude Code