fp8 bwd #108
Draft
fp8 bwd #108
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
feat: added fp32 output to input_helper passing feat: fp8 tests. small amount of error added fp8e5m2 type note: RuntimeError: "abs_cuda" not implemented for 'Float8_e4m3fnuz' enabled fp8 GEMMs fix: error down to < 0.1 added another fp8 dtype best accuracy is with no scaling improved accuracy to within < 0.02. issue related to torch side casting fix: passes if we allow v to be fp16 instead of fp8. otherwise we have error < 0.1 all error is < 0.07 feat: added per head scaling tensors progress towards implementing scaling tensors in kernel save issue: error caused by acc += tl.dot(p.to(v.type.element_ty), v)
Error: UnboundLocalError: local variable 'q_scale_stride_z' referenced before assignment. Fix: Initialize 'q_scale_stride_z' and 'kv_scale_stride_z' before assignment.
Warning: I don't know if this is the correct thing to do.
Warning - 2 test cases are failing due to this change: AssertionError: Tensor-likes are not close! FAILED test.py::test_op_prefill_fwd_impl[False-dtype1-True-bshd-0.0-False-4-6-6-1024-1023-32] Mismatched elements: 1 / 786432 (0.0%) Greatest absolute difference: 0.14855387806892395 at index (0, 309, 2, 18) (up to 0.1009 allowed) Greatest relative difference: 0.28865116834640503 at index (0, 309, 2, 18) (up to 0.09128 allowed) FAILED test.py::test_op_prefill_fwd_impl[False-dtype1-False-bshd-0.0-False-4-6-6-1024-1023-32] Mismatched elements: 1 / 786432 (0.0%) Greatest absolute difference: 0.14855387806892395 at index (0, 309, 2, 18) (up to 0.1009 allowed) Greatest relative difference: 0.28865116834640503 at index (0, 309, 2, 18) (up to 0.09128 allowed)
Two tests are still failling.
* Do not track gradients for scale factors. * Handle maximum absolute value equals to zero in per batch / head scaling method.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.