Python wheel for arm64 macOS on M1 seems to have x86_64 code

[PhilMiller]

Describe the bug

Via WarpX's run_tests.sh, I got a pip installation of openPMD_api:

Collecting openpmd-api
  Using cached openPMD_api-0.14.4-cp39-cp39-macosx_11_0_arm64.whl (6.6 MB)

However, subsequent tests that actually use this code failed to load it in the analysis script:

building qed_breit_wheeler_2d_opmd...
   cmake --build /private/var/folders/dp/8d6ytsgx01d2dwck1fccc9c40000gn/T/ci-JnRqT43TaB/warpx/builddir -j 8 --  
   Compilation time: 12.117 s
   run & test directory: /private/var/folders/dp/8d6ytsgx01d2dwck1fccc9c40000gn/T/ci-JnRqT43TaB/rt-WarpX/WarpX-tests/2022-03-18/qed_breit_wheeler_2d_opmd/
   copying files to run directory...
   path to input file: Examples/Modules/qed/breit_wheeler/inputs_2d
   running the test...
   mpiexec -n 2 ./qed_breit_wheeler_2d_opmd.ex inputs_2d  diag1.file_prefix=qed_breit_wheeler_2d_opmd_plt   amrex.abort_on_unused_inputs=1 amrex.fpe_trap_invalid=1 amrex.fpe_trap_zero=1 amrex.fpe_trap_overflow=1 warpx.always_warn_immediately=1 warpx.abort_on_warning_threshold=low diag1.format = openpmd diag1.openpmd_backend = h5 warpx.abort_on_warning_threshold = high
   Execution time: 1.526 s
   WARNING: unable to open the job_info file
   doing the analysis...
   WARNING: analysis failed...
./analysis_opmd.py  qed_breit_wheeler_2d_opmd_plt
Traceback (most recent call last):
  File "/private/var/folders/dp/8d6ytsgx01d2dwck1fccc9c40000gn/T/ci-JnRqT43TaB/rt-WarpX/WarpX-tests/2022-03-18/qed_breit_wheeler_2d_opmd/./analysis_opmd.py", line 13, in <module>
    import openpmd_api as io
  File "/private/var/folders/dp/8d6ytsgx01d2dwck1fccc9c40000gn/T/ci-JnRqT43TaB/py-venv/lib/python3.9/site-packages/openpmd_api/__init__.py", line 1, in <module>
    from . import openpmd_api_cxx as cxx
ImportError: dlopen(/private/var/folders/dp/8d6ytsgx01d2dwck1fccc9c40000gn/T/ci-JnRqT43TaB/py-venv/lib/python3.9/site-packages/openpmd_api/openpmd_api_cxx.cpython-39-darwin.so, 0x0002): tried: '/private/var/folders/dp/8d6ytsgx01d2dwck1fccc9c40000gn/T/ci-JnRqT43TaB/py-venv/lib/python3.9/site-packages/openpmd_api/openpmd_api_cxx.cpython-39-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/local/lib/openpmd_api_cxx.cpython-39-darwin.so' (no such file), '/usr/lib/openpmd_api_cxx.cpython-39-darwin.so' (no such file)

   Analysis time: -0.732 s
   WARNING: unable to copy analysis image
   archiving the output...
   creating problem test report ...
   qed_breit_wheeler_2d_opmd FAILED

To Reproduce

On an M1 Mac:

# in directory $HOME/WarpX
./run_tests.sh qed_breit_wheeler_2d_opmd

Software Environment

• version of openPMD-api: 0.14.4
• installed openPMD-api via: pip
• operating system: macOS Monterey 12.2.1
• machine: M1 Mac Mini
• name and version of Python implementation: CPython 3.9

[ax3l]

Thanks for the report!

Can you check if the universal wheel https://files.pythonhosted.org/packages/e8/16/6455fa6f1291f9f494f0c3a51093ebb2b5fb5c09ac97439e3db7f2e6eb4c/openPMD_api-0.14.4-cp39-cp39-macosx_10_9_universal2.whl has the same issue?
Update: yep.

[ax3l]

PR #1286 that publishes wheeks for 0.14.5 will fix this.
(Fix was prepared in #1233)