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Subject: Re: [OMPI devel] Change in slot_list specification
From: Lenny Verkhovsky (lenny.verkhovsky_at_[hidden])
Date: 2008-07-30 11:47:41

if there is no objection I want to bring it to 1.3

( r19062)

On 7/28/08, Ralph Castain <rhc_at_[hidden]> wrote:
> Just an FYI for those of you working with slot_lists.
> Lenny, Jeff and I have changed the mca param associated with how you
> specify the slot list you want the rank_file mapper to use. This was done to
> avoid the possibility of ORTE processes such as mpirun and orted
> accidentally binding themselves to cores. The prior param was identical to
> the one used to tell MPI procs their core bindings - so if someone ever
> modified the paffinity system to detect the param and automatically
> perform the binding, mpirun and orted could both bind themselves to the
> specified cores...which isn't what we would want.
> The new param is "rmaps_base_slot_list". To make life easier, we also added
> a new orterun cmd line option --slot-list which acts as a shorthand for the
> new mca param.
> Ralph
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