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starpu-devel - Re: [Starpu-devel] [Starpu-commits] r8070 - in trunk/mpi: examples examples/cholesky examples/complex examples/mpi_lu examples/stencil include src tests

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Re: [Starpu-devel] [Starpu-commits] r8070 - in trunk/mpi: examples examples/cholesky examples/complex examples/mpi_lu examples/stencil include src tests


Chronologique Discussions 
  • From: Samuel Thibault <samuel.thibault@ens-lyon.org>
  • To: Nathalie Furmento <nathalie.furmento@labri.fr>
  • Cc: "starpu-devel@lists.gforge.inria.fr" <starpu-devel@lists.gforge.inria.fr>
  • Subject: Re: [Starpu-devel] [Starpu-commits] r8070 - in trunk/mpi: examples examples/cholesky examples/complex examples/mpi_lu examples/stencil include src tests
  • Date: Fri, 23 Nov 2012 00:45:56 +0100
  • List-archive: <http://lists.gforge.inria.fr/pipermail/starpu-devel>
  • List-id: "Developers list. For discussion of new features, code changes, etc." <starpu-devel.lists.gforge.inria.fr>

Nathalie Furmento, le Thu 22 Nov 2012 22:04:14 +0100, a écrit :
> It is also not thread safe. There is always the possibility one thread
> calls MPI_Init and another one starpu_mpi_init ...

Not only that, but

MPI_Init();
starpu_mpi_initialize();

working, but

starpu_mpi_initialize();
MPI_Init();

not working, is not a good idea. Better let the application just tell
what it does instead of trying to guess (and in half cases, fail).

Samuel





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