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2.9.0: OSX Python Pickle Issue #3646

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ax3l opened this issue Jun 1, 2023 · 8 comments
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2.9.0: OSX Python Pickle Issue #3646

ax3l opened this issue Jun 1, 2023 · 8 comments
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@dmitry-ganyushin

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@ax3l
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ax3l commented Jun 1, 2023 •
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Describe the bug
This is a Python regression in 2.9.0, first seen by @liangwang0734 in conda-forge/adios2-feedstock#71

This seems to be partly a regression from a0d4586 possibly due to the change in multiprocessing on OS X since Python 3.8. Searching the error TypeError: cannot pickle '_io.TextIOWrapper' object gives a bunch of discussions.

cc @vicentebolea - thank you for offering to help with this

To Reproduce
Build and test ADIOS2 as in conda-forge/adios2-feedstock#71

Desktop (please complete the following information):

  • OS/Platform: OSX x86_64 for CPython 3.8-3.11 (all)
  • Build: LLVM Clang 14, CMake (latest), shared build

Additional context
This bug prevents us from releasing a new ADIOS2 release on conda-forge.
@ax3l
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ax3l commented Jun 5, 2023 •
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ping @dmitry-ganyushin

Issue is in https://github.com/ornladios/ADIOS2/blob/master/testing/adios2/engine/dataman/TestDataMan1D.py with macOS since the 2.9.0 release.

@ax3l
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ax3l commented Jun 5, 2023 

Traceback (most recent call last):
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/work/testing/adios2/engine/dataman/TestDataMan1D.py", line 34, in test_run
    s.start()
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/popen_fork.py", line 19, in __init__
    self._launch(process_obj)
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 47, in _launch
    reduction.dump(process_obj, fp)
  File "/Users/runner/miniforge3/conda-bld/adios2-split_1685656764632/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/multiprocessing/reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
TypeError: cannot pickle '_io.TextIOWrapper' object

@ax3l
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ax3l commented Jun 5, 2023 •
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@dmitry-ganyushin we suspect this is from a0d4586, where the test was added.

@dmitry-ganyushin
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dmitry-ganyushin commented Jun 6, 2023 •
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I am looking into that. Is it only specific to OSX? I made a fast test with python 3.9.16 ubuntu, everything is fine.

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Python 3.11.3 + Ubuntu is fine

@pnorbert
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pnorbert commented Jun 6, 2023

@vicentebolea Can we please have ZeroMQ, DataMan, HDF5 and some compression library on for the macos tests?

@vicentebolea vicentebolea mentioned this issue Jun 14, 2023
Closed
dmitry-ganyushin added a commit to dmitry-ganyushin/ADIOS2 that referenced this issue Jun 14, 2023
@dmitry-ganyushin
Fix for the issue ornladios#3646. It looks like the default for macos…
71c1e7f 
… and python 3.8+ "spawn" method does not work on macos, swith to "fork" for all situations. https://bugs.python.org/issue33725
@anagainaru anagainaru mentioned this issue Jun 20, 2023
Closed
dmitry-ganyushin added a commit to dmitry-ganyushin/ADIOS2 that referenced this issue Jul 4, 2023
@dmitry-ganyushin
Fix for the issue ornladios#3646. It looks like the default for macos…
9318869 
… and python 3.8+ "spawn" method does not work on macos, swith to "fork" for all situations. https://bugs.python.org/issue33725. Rebased on the current master.
eisenhauer added a commit that referenced this issue Jul 4, 2023
@eisenhauer
Merge pull request #3687 from dmitry-ganyushin/i3646-mult-macos
c8c5238 
Fix for the issue #3646.
@dmitry-ganyushin
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Fixed

@ax3l
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ax3l commented Jul 26, 2023 •
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Thanks a lot, @dmitry-ganyushin!

X-ref: #3687

vicentebolea pushed a commit to vicentebolea/ADIOS2 that referenced this issue Aug 2, 2023
@eisenhauer @vicentebolea
Merge pull request ornladios#3687 from dmitry-ganyushin/i3646-mult-macos
0f2bdf5 
Fix for the issue ornladios#3646.

(cherry picked from commit c8c5238)
@vicentebolea vicentebolea mentioned this issue Aug 3, 2023
Merged
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@ax3l @pnorbert @dmitry-ganyushin