Short answer: yes, enabling threading impacts performance, to include silently disabling OpenFabrics support.
On Oct 30, 2012, at 6:03 AM, Paul Kapinos wrote:
> At least, be aware of silently disabling the usage of InfiniBand if 'multiple'
> threading level is activated:
> On 10/29/12 19:14, Daniel Mitchell wrote:
>> Hi everyone,
>> I've asked my linux distribution to repackage Open MPI with thread support (meaning configure with --enable-thread-multiple). They are willing to do this if it won't have any performance/stability hit for Open MPI users who don't need thread support (meaning everyone but me, apparently). Does enabling thread support impact performance/stability?
>> users mailing list
> Dipl.-Inform. Paul Kapinos - High Performance Computing,
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