Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

From: Peter Kjellstrom (cap_at_[hidden])
Date: 2007-07-25 08:29:14


On Wednesday 25 July 2007, Jeff Squyres wrote:
> On Jul 25, 2007, at 7:45 AM, Biagio Cosenza wrote:
> > Jeff, I did what you suggested
> >
> > However no noticeable changes seem to happen. Same peaks and same
> > latency times.
>
> Ok. This suggests that Nagle may not be the issue here.

My guess would be that there are some nasty dead animals burried in the
network. The op mentioned 200 ms, that's enough time to cross continents, not
a time you'd expect in the same sentence as "cluster" and "latency".

...on the other hand we don't really know what the benchmark case was.

/Peter