CFX Distributed Parallel Setup

powpawell · February 18, 2015, 11:46

Hiya,

I want to link 2 PC + 1 Laptop to run CFX using the MPI Distributed parallel processing option.
Could I get some help on how to physically connect the computers?

Here are the specs:

PC1: 64bit; Intel(R) Xeon(R) CPU E31225 @ 3.10 GHz (turbo up to 3.4 GHz); 16GB (potential upgrade to 32GB)

PC2: 64bit; Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz (turbo up to 3.4 GHz); 16GB (potential upgrade to 32GB)

Laptop: 64bit; Intel(R) Core(TM) i7-4700MQ @ 2.4GHz (turo up to 3.4GHz); 16GB

I run simulations to model the turbulence on the seabed for offshore cables.

Thanks very much for your help!

ghorrocks · February 18, 2015, 18:35

The instructions to get network parallel working are all in the ANSYS installation guide.

But as a general comment: network parallel works best with similar computers. When you use a range of computers you tend to get a far poorer speed up. You can offset this marginally by biasing the partition size to offset the computer speed but it usually you cannot completely fix it. This results in a parallel simulation which is only marginally faster (or slower) than simply doing it serial or with a smaller network.

February 18, 2015, 11:46	CFX Distributed Parallel Setup	#1
powpawell New Member Pavel Join Date: Aug 2014 Posts: 15 Rep Power: 12	Hiya, I want to link 2 PC + 1 Laptop to run CFX using the MPI Distributed parallel processing option. Could I get some help on how to physically connect the computers? Here are the specs: PC1: 64bit; Intel(R) Xeon(R) CPU E31225 @ 3.10 GHz (turbo up to 3.4 GHz); 16GB (potential upgrade to 32GB) PC2: 64bit; Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz (turbo up to 3.4 GHz); 16GB (potential upgrade to 32GB) Laptop: 64bit; Intel(R) Core(TM) i7-4700MQ @ 2.4GHz (turo up to 3.4GHz); 16GB I run simulations to model the turbulence on the seabed for offshore cables. Thanks very much for your help!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Remote cluster parallel solve without master, Ansys CFX 14.5	aaguirre	CFX	4	January 27, 2015 10:15
CFX parallel hp MPI problem	fluidmechanics	CFX	5	June 19, 2013 20:05
HP MPI warning...Distributed parallel processing	Peter	CFX	10	May 14, 2011 07:17
Distributed Parallel on dual core remote machine	Justin	CFX	1	February 3, 2008 18:23
PVM RSH parallel setup problem Windows XP	abe	CFX	11	January 30, 2006 06:10

February 18, 2015, 18:35		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	The instructions to get network parallel working are all in the ANSYS installation guide. But as a general comment: network parallel works best with similar computers. When you use a range of computers you tend to get a far poorer speed up. You can offset this marginally by biasing the partition size to offset the computer speed but it usually you cannot completely fix it. This results in a parallel simulation which is only marginally faster (or slower) than simply doing it serial or with a smaller network.