[mpich-discuss] problem with mpiexec.hydra in mpich2-1.4

[Pavan Balaji]

Hello,

On 07/29/2011 08:09 AM, tony lee wrote:
> But when I submit a sample MPI program(named a.out),
> `ps aux | grep a.out` shows that all 3 compute nodes has a process
> 'a.out' running, however, when 'ps aux | grep mpiexec' shows that there
> is only one process 'mpiexec' on one of the 3 nodes.

mpiexec always only runs on one node. It just launches the application 
on all the nodes of the system and manages them.

> BTW, I use mpiexec -v to acquire more info. The error message really
> confuses me:
> [proxy:0:0 at slave3] we don't understand this command put; forwarding upstream

That's not an error. It's just an informational debug message.

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji