[mpich-discuss] Relative ordering of MPI_Iprobe()s and MPI_Barrier()s

[Darius Buntinas]

Yeah, sorry about that.  I realized the fix was not the right one last night.  I'll send a better one some time today.

-d

On Aug 18, 2010, at 3:38 AM, Edric Ellis wrote:

> Hi Darius,
> 
> Thanks for that - I haven't tried 1.3b1 yet - but that patch applied on its own to 1.2.1p1 appears to cause my example program to lock up because some of the Iprobes appear never to succeed.
> 
> Based on what Dave and Anh have said, it sounds like the right approach is for us not to make assumptions about the relative timing of barriers and probes. (Which leaves us with a puzzle of how to test our wrapper around MPI_Barrier...)
> 
> Cheers,
> 
> Edric.
> 
>> -----Original Message-----
>> From: mpich-discuss-bounces at mcs.anl.gov [mailto:mpich-discuss-
>> bounces at mcs.anl.gov] On Behalf Of Darius Buntinas
>> Sent: Tuesday, August 17, 2010 7:42 PM
>> To: mpich-discuss at mcs.anl.gov
>> Subject: Re: [mpich-discuss] Relative ordering of MPI_Iprobe()s and
>> MPI_Barrier()s
>> 
>> 
>> Can you try this patch (it's based on the trunk, but it should be simple
>> enough that it should still apply)?
>> 
>> http://mpich2.pastebin.com/z7ASbdrk
>> 
>> -d
>> 
>> On Aug 17, 2010, at 11:15 AM, Dave Goodell wrote:
>> 
>>> On Aug 17, 2010, at 11:14 AM CDT, Darius Buntinas wrote:
>>> 
>>>> I believe we might have fixed this.  Can you send us the test program, or
>> try 1.3b1?
>>> 
>>> I believe it was attached to the original email...
>>> 
>>> -Dave
>>> 
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