[mpich-discuss] MPICH2 and GPU

[Jayesh Krishna]

Hi,
 Try using the "-localonly" option (or "-localroot" option) to use the GPUs on the local node. Supporting usage of GPUs on non-local nodes is in our to-do list.

Regards,
Jayesh

----- Original Message -----
From: "bob ilgner" <bobilgner at gmail.com>
To: mpich-discuss at mcs.anl.gov
Sent: Wednesday, May 18, 2011 1:25:45 AM
Subject: [mpich-discuss] MPICH2 and GPU

Dear All,

I have two GPUs on 1 motherboard and want to use MPI to control the
CUDA on each GPU.

Program runs well in Windows 7 environment without MPICH2

When using "mpiexec -n 2 progname" then the CUDA error calls tell me
"no CUDA-capable device is detected".

i.e. the error only arises in the MPI environment.

Has anyone else experienced this before and is there something I need
to do with Mpich2 to be able to detect the GPUs ?

Regards, bob
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