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Subject: Re: [OMPI devel] PLPA ready?
From: Sharon Melamed (sharonm135_at_[hidden])
Date: 2008-02-21 10:01:48


Jeff,

1. Yes, I need both parameters when querying socket and cores.
2. I don't think that sun will concern if we will change the
get_processor/socket/core_info because as Pak Lui from Sun said in one of
his early emails "I am guessing it will not messing us up because these are
the functions that Solaris doesn't really implement yet, right?"

Sharon.

-----Original Message-----
From: devel-bounces_at_[hidden] [mailto:devel-bounces_at_[hidden]] On
Behalf Of Jeff Squyres
Sent: Thursday, February 21, 2008 4:18 PM
To: Open MPI Developers
Subject: Re: [OMPI devel] PLPA ready?

On Feb 20, 2008, at 7:53 AM, Sharon Melamed wrote:

>> I guess I was torn between reporting num_processors/sockets and
>> max_socket|core_id. Really, you need both, right? It is possible
>> that the number of processors and/or sockets are not contiguous.
> I need both *because* the number of processor is not contiguous. In my
> case, I have a machine with two sockets. the socket numbers are 0 and
> 3. so in num_sockets I have 2 and in max_socket_id I have 3 and I need
> those both values.

Ok, so it sounds like a paffinity API change is in order. When/if the
Solaris plugin comes into effect, I know that they have similar issues
(processors may not be numbered contiguously).

Do you want to change the API to include both parameters when querying
sockets and cores? The Solaris API has these functions, but they're
no-ops (returning NOT_SUPPORTED), but we'll need to make their
prototypes match.

I think PLPA otherwise passes criteria for release. I'll release PLPA
v1.1 today and try to get it integrated into the trunk. Sorry it's
taken a while...

-- 
Jeff Squyres
Cisco Systems
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