[openib-general] GAMESS and MVAPICH
Troy Benjegerdes
Tue Apr 20 15:20:54 PDT 2004
On Tue, Apr 20, 2004 at 11:10:10AM -0700, Roland Dreier wrote:
> Troy> Is there a tuning parameter in one of the openib candidate
> Troy> stacks that allows tuning of polling vs interrupt driven
> Troy> operation? At the moment the data server winds up polling
> Troy> the infiniband card and taking cpu from the compute process.
>
> Any InfiniBand stack should leave this to the application. The
> application can either use the "poll CQ" verb in a polling loop to
> check for completions, or use the "request completion notification"
> verb and sleep until a completion event occurs.
>
> - Roland
Whoops... What I meant to say was "candidate openib MPI
implementations".
Would anyone care to comment on the state of MPICH-2 infiniband support,
or otherwise list all the infiniband-capable MPI stacks, and what verbs
interfaces they support?
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