[Beowulf] GPFS on Linux (x86)
atchley at myri.com
Fri Sep 15 14:11:41 EDT 2006
On Sep 15, 2006, at 5:49 AM, Loic Tortay wrote:
> According to Patrick Geoffray:
>> Greg Lindahl wrote:
>>>> If, however, you are considering something faster than gigabit
>>>> Ethernet, bear in mind that GPFS only can use TCP (as far as I
>>> The July 2006 presentation posted to the list about the same time as
>>> your email says they're adding IB protocols in the future. I thought
>>> that GPFS used to support GM directly?
>> Never did, AFAIK. For a while, I though it used UDP, but I was
> According to the documentation, GPFS supports GM directly.
> GPFS requires TCP so GPFS on Myrinet is probably not as efficient
> as it
> could theoretically be.
> The GPFS documentation is available online, see for instance the
> "Planning and Installation Guide" in which Myrinet is mentionned a few
I looked at the documents. It is using Ethernet emulation over GM:
"If GPFS is configured to operate over Myrinet, to enable the Jumbo
Frames for Myrinet IP driver build the GM driver with the --enable-
It is not using the GM (or MX) API at all.
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