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Subject: Re: [OMPI devel] RFC: PML/CM priority
From: Brian W. Barrett (brbarret_at_[hidden])
Date: 2009-08-11 15:23:03

On Tue, 11 Aug 2009, Rainer Keller wrote:

> When compiling on systems with MX or Portals, we offer MTLs and BTLs.
> If MTLs are used, the PML/CM is loaded as well as the PML/OB1.
> Question 1: Is favoring OB1 over CM required for any MTL (MX, Portals, PSM)?

George has in the past had srtong feelings on this issue, believing that
for MX, OB1 is prefered over CM. For Portals, it's probably in the noise,
but the BTL had been better tested than the MTL, so it was left as the
default. Obviously, PSM is a much better choice on InfiniPath than
straight OFED, hence the odd priority bump.

At this point, I would have no objection to making CM's priority higher
for Portals.

> Question 2: If it is, I would like to reflect this in the default priorities,
> aka have CM have a priority lower than OB1 and in the case of PSM raising it.

I don't have strong feelings on this one.