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Subject: Re: [OMPI users] One additional (unwanted) process when using dynamical process management
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-01-21 13:15:00

Not that I've seen. What version of OMPI are you using, and on what
type of machine/environment?

On Jan 21, 2009, at 11:02 AM, Evgeniy Gromov wrote:

> Dear OpenMPI users,
> I have the following (problem) related to OpenMPI:
> I have recently compiled with OPenMPI the new (4-1)
> Global Arrays package using ARMCI_NETWORK=MPI-SPAWN,
> which implies the use of dynamic process management
> realised in MPI2. It got compiled and tested successfully.
> However when it is spawning on different nodes (machine) one
> additional process on each node appears, i.e. if nodes=2:ppn=2
> then on each node there are 3 running processes. In the case
> when it runs just on one pc with a few cores (let say nodes=1:ppn=4),
> the number of processes exactly equals the number of cpus (ppn)
> requested and there is no additional process.
> I am wondering whether it is normal behavior. Thanks!
> Best regards,
> Evgeniy
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