I'm looking for MPI_THREAD_MULTIPLE level. I will test the LA_MPI. Thank
for your help.
On Mon, Mar 14, 2005 at 12:07:21PM -0500, Brian Barrett wrote:
> On Mar 14, 2005, at 5:03 PM, Juraj Tlsty wrote:
>
> >Hi folks,
> >is there any thread-safe, non-commercial implementation of MPI for
> >Linux?
> >Thanks
>
> It depends on what you mean by "thread-safe" :). The MPI standard
> gives four levels of thread safety:
>
> MPI_THREAD_SINGLE: Only one thread will execute.
> MPI_THREAD_FUNNELED: The process may be multi-threaded, but only
> the main thread
> will make MPI calls (all MPI calls are ``funneled'' to the main
> thread).
> MPI_THREAD_SERIALIZED: The process may be multi-threaded, and
> multiple threads
> may make MPI calls, but only one at a time: MPI calls are not
> made
> concurrently from two distinct threads (all MPI calls are
> ``serialized'').
> MPI_THREAD_MULTIPLE: Multiple threads may call MPI, with no
> restrictions.
>
> LAM/MPI supports MPI_THREAD_SINGLE to MPI_THREAD_SERIALIZED since the
> 7.0 release. If you need MPI_THREAD_MULTIPLE support, I would
> recommend looking at LA-MPI from Los Alamos National Laboratory:
>
> http://public.lanl.gov/lampi/
>
> The LAM/MPI team and LA-MPI team are collaborating on Open MPI, to be
> released this year. It will also support MPI_THREAD_MULTIPLE, along
> with oodles of other features not found in LA-MPI or LAM/MPI.
>
> Brian
>
> --
> Brian Barrett
> LAM/MPI developer and all around nice guy
> Have an LAM/MPI day: http://www.lam-mpi.org/
>
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
--
Juraj Tlsty
Student IST VTI FEI TUKE
jurajtlsty_at_[hidden]
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