[mpich-discuss] I can not make MPI recognizes a dual core

[Yessica Brinkmann]

Very thanks for your response.
The problem is that I am using Visual C++ with Visual Studio 2008 and
I am not execute my program from the command line. What I can to do?
Very thanks for your interest.
Yessica Brinkmann

2010/5/21 Gus Correa <gus at ldeo.columbia.edu>:
> Hi
>
> Even in a single core machine it should work (oversubscribing the
> processor), I suppose.
>
> Did you ask for two processes/processors in your mpirun/mpiexec command?
>
> mpiexec -np 2 my_program
>
> "man mpiexec" is also a helpful source of information.
>
>
> I hope it helps
> Gus Correa
>
> Yessica Brinkmann wrote:
>>
>> Hello. I am using MPICH2. I am writing my first program in MPI. I
>> write the sentences:
>> ...
>> int id;
>> MPI_Comm_rank (MPI_COMM_WORLD, & id);
>> if (id == 0)
>> / * Master task * /
>> (
>> ...
>> )
>> else
>> / * Worker task * /
>> (
>> ...
>> )
>> And I write other sentences. The issue is that it does not recognize a
>> DualCore processor, and takes the machine as it only has one
>> processor, indeed, never enters the else.
>> I would appreciate very much any help.
>> Sincerely,
>> Yessica Brinkmann
>> _______________________________________________
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>> mpich-discuss at mcs.anl.gov
>> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
>
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