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[MPS] Add regression test for sync deadlock#141296

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[MPS] Add regression test for sync deadlock#141296
malfet wants to merge 2 commits intomainfrom
malfet-patch-36

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@malfet malfet commented Nov 21, 2024 •
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See #140725 (comment)
Running torch.mps.synchronize() after metal kernel resulted in infinite wait inside [_MTLCommandBuffer waitUntilCompleted]

(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00000001aa919084 Metal`pthread_cond_wait + 12
    frame #1: 0x00000001aa78b1b4 Metal`-[_MTLCommandBuffer waitUntilCompleted] + 84
    frame #2: 0x00000001032bf358 libtorch_python.dylib`torch::mps::MPSModule_deviceSynchronize(_object*, _object*) + 40
    frame #3: 0x0000000100e94c20 Python`cfunction_vectorcall_NOARGS + 100
    frame #4: 0x0000000100e389b8 Python`PyObject_Vectorcall + 92
    frame #5: 0x0000000100f61e38 Python`_PyEval_EvalFrameDefault + 19040
    frame #6: 0x0000000100f5d180 Python`PyEval_EvalCode + 200
    frame #7: 0x0000000100fcd1a4 Python`run_eval_code_obj + 104
    frame #8: 0x0000000100fccbe4 Python`run_mod + 168
    frame #9: 0x0000000100fcb518 Python`pyrun_file + 164
    frame #10: 0x0000000100fca854 Python`_PyRun_SimpleFileObject + 256
    frame #11: 0x0000000100fca4e8 Python`_PyRun_AnyFileObject + 80
    frame #12: 0x0000000100ff2028 Python`pymain_run_file_obj + 164
    frame #13: 0x0000000100ff1ce4 Python`pymain_run_file + 72
    frame #14: 0x0000000100ff0f74 Python`Py_RunMain + 988
    frame #15: 0x0000000100ff1564 Python`pymain_main + 304
    frame #16: 0x0000000100ff1604 Python`Py_BytesMain + 40
    frame #17: 0x000000019f630274 dyld`start + 2840

@malfet malfet requested a review from kulinseth as a code owner November 21, 2024 22:33
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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/141296

Note: Links to docs will display an error until the docs builds have been completed.

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As of commit 1ed6736 with merge base 7b2138b (image):

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@pytorch-bot pytorch-bot bot added ciflow/mps Run MPS tests (subset of trunk) topic: not user facing topic category labels Nov 21, 2024
@malfet malfet requested a review from Skylion007 November 21, 2024 23:27
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malfet commented Nov 22, 2024

@pytorchbot merge -f "Lint + MPS tests are green"

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pytorchmergebot commented Nov 22, 2024

Merge started

Your change will be merged immediately since you used the force (-f) flag, bypassing any CI checks (ETA: 1-5 minutes). Please use -f as last resort and instead consider -i/--ignore-current to continue the merge ignoring current failures. This will allow currently pending tests to finish and report signal before the merge.

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pobin6 pushed a commit to pobin6/pytorch that referenced this pull request Dec 5, 2024
@malfet
[MPS] Add regression test for sync deadlock (pytorch#141296)
35e1645 
See pytorch#140725 (comment)
Running `torch.mps.synchronize()` after metal kernel resulted in infinite wait inside `[_MTLCommandBuffer waitUntilCompleted]`
```
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00000001aa919084 Metal`pthread_cond_wait + 12
    frame #1: 0x00000001aa78b1b4 Metal`-[_MTLCommandBuffer waitUntilCompleted] + 84
    frame pytorch#2: 0x00000001032bf358 libtorch_python.dylib`torch::mps::MPSModule_deviceSynchronize(_object*, _object*) + 40
    frame pytorch#3: 0x0000000100e94c20 Python`cfunction_vectorcall_NOARGS + 100
    frame pytorch#4: 0x0000000100e389b8 Python`PyObject_Vectorcall + 92
    frame pytorch#5: 0x0000000100f61e38 Python`_PyEval_EvalFrameDefault + 19040
    frame pytorch#6: 0x0000000100f5d180 Python`PyEval_EvalCode + 200
    frame pytorch#7: 0x0000000100fcd1a4 Python`run_eval_code_obj + 104
    frame pytorch#8: 0x0000000100fccbe4 Python`run_mod + 168
    frame pytorch#9: 0x0000000100fcb518 Python`pyrun_file + 164
    frame pytorch#10: 0x0000000100fca854 Python`_PyRun_SimpleFileObject + 256
    frame pytorch#11: 0x0000000100fca4e8 Python`_PyRun_AnyFileObject + 80
    frame pytorch#12: 0x0000000100ff2028 Python`pymain_run_file_obj + 164
    frame pytorch#13: 0x0000000100ff1ce4 Python`pymain_run_file + 72
    frame pytorch#14: 0x0000000100ff0f74 Python`Py_RunMain + 988
    frame pytorch#15: 0x0000000100ff1564 Python`pymain_main + 304
    frame pytorch#16: 0x0000000100ff1604 Python`Py_BytesMain + 40
    frame pytorch#17: 0x000000019f630274 dyld`start + 2840
```

Pull Request resolved: pytorch#141296
Approved by: https://github.com/huydhn
@malfet malfet deleted the malfet-patch-36 branch December 12, 2024 22:30
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