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Subject: Re: [OMPI devel] RFC: Force Slurm to use PMI-1 unless PMI-2 is specifically requested
From: Artem Polyakov (artpol84_at_[hidden])
Date: 2014-05-07 22:16:28


Hi Chris.

Current disign is to provide the runtime parameter for PMI version
selection. It would be even more flexible that configuration-time selection
and (with my current understanding) not very hard to acheive.

2014-05-08 8:15 GMT+07:00 Christopher Samuel <samuel_at_[hidden]>:

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>
> Hi all,
>
> Apologies for having dropped out of the thread, night intervened here. ;-)
>
> On 08/05/14 00:45, Ralph Castain wrote:
>
> > Okay, then we'll just have to develop a workaround for all those
> > Slurm releases where PMI-2 is borked :-(
>
> Do you know what these releases are? Are we talking 2.6.x or 14.03?
> The 14.03 series has had a fair few rapid point releases and doesn't
> appear to be anywhere as near as stable as 2.6 was when it came out. :-(
>
> > FWIW: I think people misunderstood my statement. I specifically
> > did *not* propose to *lose* PMI-2 support. I suggested that we
> > change it to "on-by-request" instead of the current "on-by-default"
> > so we wouldn't keep getting asked about PMI-2 bugs in Slurm. Once
> > the Slurm implementation stabilized, then we could reverse that
> > policy.
> >
> > However, given that both you and Chris appear to prefer to keep it
> > "on-by-default", we'll see if we can find a way to detect that
> > PMI-2 is broken and then fall back to PMI-1.
>
> My intention was to provide the data that led us to want PMI2, but if
> configure had an option to enable PMI2 by default so that only those
> who requested it got it then I'd be more than happy - we'd just add it
> to our script to build it.
>
> All the best!
> Chris
> - --
> Christopher Samuel Senior Systems Administrator
> VLSCI - Victorian Life Sciences Computation Initiative
> Email: samuel_at_[hidden] Phone: +61 (0)3 903 55545
> http://www.vlsci.org.au/ http://twitter.com/vlsci
>
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-- 
С Уважением, Поляков Артем Юрьевич
Best regards, Artem Y. Polyakov