[Numpy-discussion] MKL and OpenBLAS

Sturla Molden sturla.molden at gmail.com
Sun Feb 2 19:42:20 EST 2014


Sturla Molden <sturla.molden at gmail.com> wrote:
> 
> Yes, it seems to be a GNU problem:
> 
> http://bisqwit.iki.fi/story/howto/openmp/#OpenmpAndFork
> 
> This Howto also claims Intel compilers is not affected. 

It seems another patch has been proposed to the libgomp team today:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60035

Unfortunaltely I don't think the libgomp team really appreciates the
absurdity that a call to BLAS function like DGEMM can interfere with a
subsequent call to fork. Mixing multithreading and forks is one thing, but
the raison d'etre for OpenMP is to simplify vectorization of serial code.

Sturla




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