install with conda error: Symbol not found: __ZN5amrex6OpenMP9omp_locksE about impactx HOT 5 CLOSED

Hi @tiamiceli,

Thank you for the report!

Oh no, we are aware of this issue since AMReX-Codes/amrex#3696 for Windows, but did not know it also affects macOS!

We work on a fix with @WeiqunZhang in AMReX-Codes/amrex#3798

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Confirmed: on my mac mini (M1) using

conda create -n impactx -c conda-forge impactx
conda activate impactx 

as documented.

And then

$ impactx.NOMPI.OMP.DP.OPMD 
dyld[85863]: Symbol not found: __ZN5amrex6OpenMP9omp_locksE
  Referenced from: /Users/axel/miniconda3/envs/impactx/bin/impactx.NOMPI.OMP.DP.OPMD
  Expected in: /Users/axel/miniconda3/envs/impactx/lib/libamrex_3d.dylib
Abort trap: 6

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Oh, that is actually because it already uses the conda package amrex nompi_h39290d2_102 and I changed the exported OpenMP symbol in this update compared to what ImpactX was built against, amrex nompi_h39290d2_101.

Fix coming via conda-forge/impactx-feedstock@7ad786c

Tomorrow, recreating the environment should fix the issue on macOS @tiamiceli.

(@WeiqunZhang the Windows issue is still unsolved for us.)

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@tiamiceli I gave the new package a test:

conda env remove -n impactx

conda create -n impactx -c conda-forge impactx
conda activate impactx 

(installs now impactx conda-forge/osx-arm64::impactx-24.03-py312h55a178e_1)

With that macOS works again 🎉

$ impactx.NOMPI.OMP.DP.OPMD ~/src/impactx/examples/fodo/input_fodo.in
Initializing AMReX (24.03)...
OMP initialized with 8 OMP threads
AMReX (24.03) initialized

Grids Summary:
  Level 0   1 grids  512 cells  100 % of domain
...

Does this fix it for you as well? :)

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@tiamiceli does everything work now? :)

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