[mpich-discuss] MPI_INIT_THREAD doesn't work properly under windows - use -channel mt

[Jayesh Krishna]

Hi,
 Please use the multithreaded channel on windows (mpiexec ... -channel mt
... prog.exe) for multithreaded MPI apps.

Regards,
Jayesh
 
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From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of trymelz trymelz
Sent: Monday, March 17, 2008 2:02 PM
To: mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] MPI_INIT_THREAD doesn't work properly under windows


Hi,
 
I have a mixed-language programming project using C and FORTRAN. In the
FORTRAN file, I have the following code
 
        call MPI_INIT_THREAD(MPI_THREAD_SERIALIZED,plevel, impierr)
        if(impierr.ne.MPI_SUCCESS)then
          write(*,*)'MPI is not initialized, exit'
        elseif(plevel .ne. MPI_THREAD_SERIALIZED)then
          write(*,*)'MPI LEVEL ERROR,exit',plevel
        endif

I compiled this project with VC6 and Intel Fortran compiler. When I run it,
I get
 
 MPI LEVEL ERROR,exit           0
 
 
It seems to me that the MPICH2 doesn't support MPI_THREAD_SERIALIZED under
windows.  I did not find any notes about this on the manual, so I am
wondering if I am missing something important. Thanks.
 
 
Linfa

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