Lower computation overhead in standalone CFX?

bongbang · February 28, 2015, 17:12

According to an Ansys training video, that's one advantage of the standalone mode vs Workbench. I didn't know that before, although it stands to reason that there must be some advantage to the former. How low is lower? I would never have imagined that the Workbench interface takes all that much resource. I will soon run a simulation that is supposed to take days, and anything that would cut down that time is worth trying.

ghorrocks · March 1, 2015, 00:46

The best way of assessing this is to simply run a test of the same simulation inside and outside of workbench.

But in general most CFX models are not huge in memory but take a lot of CPU time. Workbench takes a bit of memory when it runs a CFX job but little CPU time. So you are unlikely to go significantly faster when you run outside of workbench. In a rare number of simulations memory is a limitation - and for these simulations running it out of workbench will free a bit of extra memory.

February 28, 2015, 17:12	Lower computation overhead in standalone CFX?	#1
bongbang Member NC Join Date: Jan 2015 Posts: 49 Rep Power: 11	According to an Ansys training video, that's one advantage of the standalone mode vs Workbench. I didn't know that before, although it stands to reason that there must be some advantage to the former. How low is lower? I would never have imagined that the Workbench interface takes all that much resource. I will soon run a simulation that is supposed to take days, and anything that would cut down that time is worth trying.

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March 1, 2015, 00:46		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,854 Rep Power: 144	The best way of assessing this is to simply run a test of the same simulation inside and outside of workbench. But in general most CFX models are not huge in memory but take a lot of CPU time. Workbench takes a bit of memory when it runs a CFX job but little CPU time. So you are unlikely to go significantly faster when you run outside of workbench. In a rare number of simulations memory is a limitation - and for these simulations running it out of workbench will free a bit of extra memory.