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Subject: Re: [OMPI users] Adjust the polling frequency in ompi ?
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-06-23 21:13:15


On Jun 23, 2009, at 5:42 PM, Hsing-bung Chen wrote:

> FYI,
> Is this the right way to adjust the polling frequency in ompi?
>

Which polling rate are you trying to adjust? And why (I'm just
curious)?

This particular polling rate is slightly complicated. Think of it as
how often we progress file descriptor-based communications when *not*
using TCP as an MPI transport (e.g., when using OpenFabrics, we poll
file descriptors very infrequently -- but we still poll OpenFabrics
completion queues hard for progress; there's no way to "dial that
down", so to speak).

-- 
Jeff Squyres
Cisco Systems