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Subject: Re: [OMPI devel] [PATCH] fix mx btl_bandwidth
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-09-09 01:05:19

On Sep 8, 2010, at 5:02 PM, Rolf vandeVaart wrote:

> The way the code is currently written, it does not run the autodetect by default. What happens is it takes a look at
> the bandwidth value. If the bandwidth value is 0, it will run the autodetect code.

This seems like a no-brainer: we should change the default value to 0 so that the auto-detect code runs.

"Auto-detect" is actually a generous term -- we don't have to figure out anything. We do a little algebra with the provided data to translate it into Mbytes/sec, but the information comes directly from the IBV API; it's not like we're conducting speed microbenchmarks or anything like that.

Jeff Squyres
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