Vlad Manea wrote:
Hi Joe,
The codes are not commercial, they are developed together with
Mike Gurnis's group at Caltech (CIG). The codes are parallel and use
MPICH. I use a small 24 ports Gigabit switch
from Netgear for the moment (it is full-duplex and supports jumbo frames...).
I had a very tight budget, but next year if one of our big proposal will be
accepted
I would go for a good switch. Can you give me a TIP here? Thx!
Procurve 2900-48G. Excellent properties. A bit pricey, but overall an
extremely good switch.
The test cases are not intended to be large
rather they are at most few GB in size (if they are 3D cases; 2D cases
are much smaller). The compute nodes are DELL PowerEdge SC1435
with 4AMD opterons and 8 GB RAM. NICs are on board, probably not
the best solution I think...I can probably negotiate with DELL
for an upgrade here to Intel PRO 1000PT Dual NIC, Cu, PCIe...
Vlad
______________________
Joe Landman wrote:
Vlad Manea wrote:
Hi Joe,
Thanks. Probably I will go with ROCKS.
For the moment I have 5 machines with 4 AMDs on them
and I will use one as headnode and the other 4 as comp. nodes.
The cluster will be dedicated to run fluid dynamics codes.
Hi Vlad:
Are these locally developed codes or commercial ones?
As for IO, I use a Gigabit switch with 48 Gb backplane bandwidth,
which probably might be sufficient for a while...
Possibly. Which switch are you going to use? You are looking (for MPI) to
optimize the port-port latency (and make sure you have good NICs on the
units). For file IO, if these are fluent runs, how large are the case files?
We have customers with 20+ GB sized files these days.
I also intend to use both NICs on my servers.
However the cluster I intend to build is more experimental
and will be probably limited to 32 (64? if $$ available...) nodes.
Ok. I might suggest focusing some of your money on the gigabit
infrastructure (general case) ... good gigabit switches can have a positive
impact upon multiple other subsystems.
Joe
Vlad
_____________
--
*Dr. Vlad Constantin Manea*
*Professor of Geophysics*
Computational Geodynamics Lab. <http://www.geociencias.unam.mx/geodinamica>
Centro de Geociencias,
Campus UNAM, Juriquilla,
Blvd Juriquilla 3001,
Juriquilla, Querétaro, 76230,
México.
phone: +52 55 5623 4104/ext.133
fax: (55) 5623-4129
--
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: [EMAIL PROTECTED]
web : http://www.scalableinformatics.com
http://jackrabbit.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 866 888 3112
cell : +1 734 612 4615
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