Nodes and cores are *hardware* concepts. If you need to add hardware resources to your job, that is a resource manager issue. If you want to create new MPI processes _that will run on those new nodes/cores_, you can use MPI_Comm_spawn for that. As for pausing a job, I'm not sure why you want to do that. Are you trying to suspect the job until the new hardware resources become available? On Wed, Oct 7, 2015 at 10:08 PM, wahi <[email protected]> wrote:

Hi Jeff,

Thank you for your reply, I think the MPI_COMM_Spawn is for generating new processes but I need to add more node or cores after pausing the job, am I right ?

On 10/08/2015 08:11 AM, Jeff Hammond wrote:

See MPI_Comm_spawn(_multiple).

Jeff

On Wednesday, October 7, 2015, Zhao, Xin < <[email protected]> [email protected]> wrote:

...

Hi Wahi,

Do you mean you want to change number of hosts during one MPI execution? If so, we think that is not possible.

Xin ________________________________________ From: wahi [[email protected]] Sent: Wednesday, October 07, 2015 2:43 AM To: [email protected] Subject: [mpich-discuss] Can the MPICH job pause and resumed

Hi,

I would like to know if there is possibility to pause the MPICH job and restart it with more node numbers ?

Thanks in advance for any help or suggestion.

Regards, Wahi _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

-- Jeff Hammond [email protected] http://jeffhammond.github.io/

_______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe:https://lists.mpich.org/mailman/listinfo/discuss

_______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

-- Jeff Hammond [email protected] http://jeffhammond.github.io/ _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss