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: 13	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!

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February 18, 2015, 18:35		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 18,016 Rep Power: 146	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.