Does Distributed CFX require same chipset

evcelica · October 13, 2011, 14:52

I've read in the distributed Ansys guide machines i a cluster must be of the same chipset. Is this true for CFX as well? I'm wondering if a P67 and Q67 would work in distributed parallel? Thanks in advance.

ghorrocks · October 13, 2011, 17:51

A heterogenous cluster will work, as in it will run simulations, but in my experience it will not be very effective and will run at the speed of the slowest machine on the cluster. This means you get little speedup from the faster machines on the network.

Balancing cluster loads in hetergeous clusters in my experience is ineffective. The only way to get a cluster to run with good speed ups is to make it homogenous.

evcelica · October 17, 2011, 22:07

Thanks for the reply Glenn. CFX support told me they could be different machines as well. I know identical computers would be ideal but my work won't buy a custom built computer to match my home computer, so I'm stuck with two different computers, though they are both pretty quick. If I ever get it running I can post some results for scalability. Thanks again.

ghorrocks · October 18, 2011, 06:11

Then it is probably best to use one for simulations and keep the other for pre and post processing. Then you do not need to worry about distributed parallel at all.

October 13, 2011, 14:52	Does Distributed CFX require same chipset	#1
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	I've read in the distributed Ansys guide machines i a cluster must be of the same chipset. Is this true for CFX as well? I'm wondering if a P67 and Q67 would work in distributed parallel? Thanks in advance.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ATTENTION! Reliability problems in CFX 5.7	Joseph	CFX	14	April 20, 2010 15:45
Electronics Enclosure Analysis with CFX	Simulation Engineer	CFX	1	April 22, 2009 11:08
CFX 10's solutions differ from CFX 5.7's	Atit Koonsrisuk	CFX	4	July 26, 2006 11:59
CFX distributed computing: Cluster design Q	Joe	CFX	7	July 11, 2006 10:21
FSI using CFX and ANSYS	Bi Chang	CFX	2	May 10, 2005 04:47

October 13, 2011, 17:51		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	A heterogenous cluster will work, as in it will run simulations, but in my experience it will not be very effective and will run at the speed of the slowest machine on the cluster. This means you get little speedup from the faster machines on the network. Balancing cluster loads in hetergeous clusters in my experience is ineffective. The only way to get a cluster to run with good speed ups is to make it homogenous.

October 17, 2011, 22:07		#3
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	Thanks for the reply Glenn. CFX support told me they could be different machines as well. I know identical computers would be ideal but my work won't buy a custom built computer to match my home computer, so I'm stuck with two different computers, though they are both pretty quick. If I ever get it running I can post some results for scalability. Thanks again.

October 18, 2011, 06:11		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Then it is probably best to use one for simulations and keep the other for pre and post processing. Then you do not need to worry about distributed parallel at all.