Take a look at orte/mca/rmaps/seq - you can select it with -mca rmaps seq
I believe it is documented
On Thu, Feb 4, 2010 at 5:48 PM, Eugene Loh <Eugene.Loh_at_[hidden]> wrote:
> Ralph Castain wrote:
>
> That is correct and has always been the behavior. If you want OMPI to
>> respect host order, you have to use the sequential mapper instead of the
>> default round-robin mapper.
>>
>
> Sorry, what's the sequential mapper?
>
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