On Thu, 28 Aug 2014, Miguel Angel Salazar de Troya wrote:
How can I give one MPI rank per shared-memory system in my own
computer? I thought that running the program in serial with the
option "--n_threads=4" would work, but it doesn't seem so.
On a single computer, no clustering, that should have been sufficient.
Do you have a mesh.print_info() in your app, and if so what does it
say n_threads is?
If it says n_threads is 1, is it possible that you configured without
TBB installed?
It might be that the rest of my code that is not "threaded" is too
slow.
Yes, or it might be possible that the unthreaded parts of our code are
too slow. Getting the algebraic solver to run multithreaded is
tricky, and in a lot of codes the solve is the expensive part.
---
Roy
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