I am building with VS 2008 and the compiler (cl) and the standard libraries that goes with 
it, including the windows thread library. I have noted that ompi_info requires either Posix 
or Solaris threads to report that open-mpi has thread support. Do I  need to change the 
thread library and/or do I need another compiler?
 
Regards,
Bjorn Regnstrom

At Wednesday, 2011-09-21 on 17:32 Tim Prince wrote:

On 9/21/2011 11:18 AM, Björn Regnström wrote:
> Hi,
>
> I am trying to build Open MPI 1.4.3 with thread support on Windows. A
> trivial test program
> runs if it calls MPI_Init or MP_Init_thread(int *argc, char ***argv, int
> required, int *provide) with
> reguired=0 but hangs if required>0. ompi_info for my build reports that
> there is no thread
> support but MPI_Init_thread returns provide==required.
>
> The only change in the CMake configuration was to check
> OMPI_ENABLE_MPI_THREADS.
> Is there anything else that needs to be done with the configuration?
>
> I have built 1.4.3 with thread support on several linuxes and mac and it
> works fine there.
>
Not all Windows compilers work well enough with all threading models
that you could expect satisfactory results; in particular, the compilers
and thread libraries you use on linux may not be adequate for Windows
thread support.


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Tim Prince
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