[Beowulf] curiosity killed the cat

Greg Lindahl lindahl at pbm.com
Wed Jun 1 15:18:55 PDT 2016

On Wed, Jun 01, 2016 at 03:25:22PM -0400, Andrew Piskorski wrote:

> You mean GAMMA (Genoa Active Message MAchine):
>   http://www.disi.unige.it/project/gamma/
>   http://www.linux-mag.com/id/7253/
>   http://www.beowulf.org/pipermail/beowulf/2006-February/014846.html

I wonder how their flow control scheme of static partitioning of the
receive queue scales to more modern hardware?

Oh, and I'm thrilled that they show the N_1/2 packet size! (the size
where bandwidth reaches 1/2 of the peak.) That's a number PathScale
published, but it never became popular with other folks doing
performance testing.

-- greg

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