-----Original Message----- From: Diego Avesani <diego.aves...@gmail.com> Reply: Open MPI Users <us...@open-mpi.org> Date: February 17, 2016 at 8:13:35 AM To: Open MPI Users <us...@open-mpi.org> Subject: Re: [OMPI users] difference between OpenMPI - intel MPI -- how to understand where\why
> I am trying to solve a huge linear system, which converges with open MPI > and not with MPI. I think you're trying to say "...which converges with Open MPI and not with *Intel* MPI", right? > The problem is that I do not know what is the exact > result. What are the differences between your runs? - you already identified Open MPI vs. Intel MPI - are you running on different hardware? (e.g., different clusters with different processors / accelerators, different network types, ...etc.) - are you compiling with different compilers? - are you using the same support libraries (e.g., numerical support libraries), and if so, were they compiled differently? Usually, the best idea in these kinds of cases is to reduce the issue to a small program where you can reproduce the problem (i.e., reduce the unknowns to as small a number as possible), and then see where that leads to. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
