[mpich-discuss] how to dynamically schedule process in mpich

[Shuwei Zhao]

Hi, Zhou,

Sorry for the late reply, I was busy with some customer requests. Yes my
system is UGE similar to SGE.
Your explanation makes a lot senses. I haven't had a chance to verify it.
I'll try it later.

Thank you a lot for your explanations. I have great learning experiences in
the discussion forum.

Wish you and your team member have a nice holiday!

Thanks,
Shuwei


On Thu, Nov 29, 2018 at 5:17 PM Zhou, Hui <zhouh at anl.gov> wrote:

> What is your system? PBS? You have to prescribe a pool of nodes with qsub
> and run mpiexec -n 1 (for example). Then when you launch additional mpi
> process dynamically, hydra will spawn new processes within the prescribed
> pool. If your original pool is a single host, then all new dynamic process
> will be on that single host. If you describe multiple hosts, I believe
> hydra will do round-robin style allocation, i.e. the next processes will go
> to host 2, host 3, …., host N, host 1 (circle back).
>
> This is my current understanding. Let me know whether you can confirm.
>
> —
> Hui Zhou
>
>
>
> On Nov 29, 2018, at 4:41 PM, Shuwei Zhao <shuweizhao1991 at gmail.com> wrote:
>
> Hi Hui
>
> I cannot run mpiexec directly on my hosts because both rsh and ssh
> connections are disabled. I have to use qsub -P bnormal -pe dp 4 mpiexec
> ./my_exe to run my binary on remote hosts.
>
> Thanks
> Shuwei
>
>>
>>
>
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