On Jul 9, 2007, at 3:17 PM, Peter Kjellstrom wrote:
Our new HP cluster has 25208 HCAs (Mellanox Arbel) but a new vendor-
id... We
have 0x1708 (presumably HP, hardware wise Cisco (Mellanox)) to add
to the
Added in r15316; thanks for pointing it out.
existing list in share/openmpi/mca-btl-openib-hca-params.ini that
currently
contains:
# Mellanox 0x2c9
# Cisco 0x5ad
# Silverstorm 0x66a
# Voltaire 0x8f1
Somewhat related question 1: Is there a blessed way to map these
ids back to
strings?
Not via C API, no. But the IEEE OUI web page can be used to look up
these values:
http://standards.ieee.org/regauth/oui/
question 2: Is 1024 really the best MTU for DDR Arbel? I seem to
remember this
being 2048...
I *believe* that that value came from Mellanox, but I don't remember
offhand. But it could also be a "doesn't really matter either way"
issue. You might want to try both with your apps and see if there's
a performance difference. Let us know what happens.
--
Jeff Squyres
Cisco Systems
