[mpich2-dev] 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 response a general user-level question.
Yessica Brinkmann

2010/5/21 Lisandro Dalcin <dalcinl at gmail.com>:
> On 21 May 2010 14:07, Yessica Brinkmann <yessica.brinkmann at gmail.com> wrote:
>> Hello.
>
> Hello, Yessica
>
>> I am using MPICH2. I am writing my first program in MPI.
>
> This mailing list is related to DEVELOPMENT of MPICH2, general (and
> pretty basic, in your case) user-level questions about MPI should be
> directed elsewhere.
>
>> 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
>>
>
> After compiling your program:
>
> $ mpicc sourcecode.c -o myprogram
>
> you have to run it like this (requires first to "mpdboot"):
>
> $ mpiexec -n 2 ./myprogram
>
> of like this:
>
> $ mpiexec.hydra -n 2 ./myprogram
>
>
>
>
> --
> Lisandro Dalcin
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>