[mpich-discuss] [mpich2-dev] I can not make MPI recognizes a dual core

[jayesh at mcs.anl.gov]

Hi,
 Did you get any errors during the installation of MPICH2 ?
 I would recommend the following,

# Uninstall MPICH2 from your system.
# Download the latest version of MPICH2 (http://www.mcs.anl.gov/research/projects/mpich2/downloads/index.php?s=downloads).
# Open an administrative command prompt (Right-click on the command prompt icon and select "Run as administrator")
# From the administrative command prompt use the msiexec utility to install MPICH2 (eg: Type "msiexec /i mpich2-1.2.1p1-win-ia32.msi" to install MPICH2 using the mpich2-1.2.1p1-win-ia32.msi installer)
# The above command will bring up the Installer GUI to install MPICH2. Follow the installer steps to install MPICH2.
# After the installation try to run a non-MPI program (mpiexec -n 2 hostname) . If the job launcher, mpiexec, requests for a username/password please provide the same (When specifying the username/password make sure that you specify the domain name if the user is a domain user).

 Let us know the results.

Regards,
Jayesh
(PS: Please reply to this email for further correspondence regarding this request - I have copied the email to mpich-discuss instead of mpich2-dev since the discussion is not related to mpich2 dev )

----- Original Message -----
From: "Yessica Brinkmann" <yessica.brinkmann at gmail.com>
To: mpich2-dev at mcs.anl.gov
Sent: Friday, May 21, 2010 7:08:41 PM GMT -06:00 US/Canada Central
Subject: Re: [mpich2-dev] I can not make MPI recognizes a dual core

Very thanks for your response. I am using windows 7 and I execute at
windows comman line mpiexec -np 2 my_program.exe that you say to me,
at the MPICH2\bin directory.
The system response to me:
Please specify an authentication passphrase for smpd:
And then I write the authentication passphrase that I write on the
MPICH instalation and the system response to me:
Error while connectig to host, No se puede establecer una conexión ya
que el equipo de destino denegó expresamente dicha conexión (10061)
Connect on sock(host=User-PC, port=8676) failed, exhaused all end
points Unable to connect to 'User-PC:8678', sock error: Error = -1
I will thanks you very much any help.
Thanks,
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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>