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Subject: Re: [OMPI devel] Allgather failures?
From: Paul H. Hargrove (PHHargrove_at_[hidden])
Date: 2009-07-29 12:35:39


Ashley Pittman wrote:
> On Tue, 2009-07-28 at 19:06 -0600, Ralph Castain wrote:
>
>
>> In other words, a divide-by-zero floating point exception on a
>> collective test.
>>
>
> To throw another question into the mix why are the collective tests
> using floating point calculations in the first place?
>
> Ashley,
>
>

I believe this is a case of INTEGER division by zero raising SIGFPE:
> [odin001:31038] *** Process received signal ***
> [odin001:31038] Signal: Floating point exception (8)
> [odin001:31038] Signal code: Integer divide-by-zero (1)
> [odin001:31038] Failing at address: 0x804c8c9
-Paul

-- 
Paul H. Hargrove                          PHHargrove_at_[hidden]
Future Technologies Group                 Tel: +1-510-495-2352
HPC Research Department                   Fax: +1-510-486-6900
Lawrence Berkeley National Laboratory