[petsc-dev] Using multiple mallocs with PETSc

[Jeff Hammond]

> 
>  Disappointing on my Mac.
> 
> WARNING: Could not locate OpenMP support. This warning can also occur if compiler already supports OpenMP
> checking omp.h usability... no
> checking omp.h presence... no
> checking for omp.h... no
> omp.h is required for this library
> 

Blame Apple for not supporting OpenMP in their system compiler. You need to Homebrew GCC or recent Clang to get OpenMP on Mac. Or you can install Intel (or PGI <ducks>).

Even if you get past this, you may run into other issues, which I captured on https://github.com/memkind/memkind/issues/34 a while ago. If libnuma is still a mandatory dependency, it's not available on Mac.

Jeff
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