time needed to run a a simulation

Alia Amer · April 12, 2016, 13:14

i am simulating internal and external air flow inside a building using ansys flotran. i have a total element number of 2.5 million elements and the file is 19 GB. it took me 12 hours to run 100 iterations... is this normal????? please advise me since i am afraid that something might be wrong with my simulations or set up!

davidwilcox · April 15, 2016, 03:08

run the simulations using more cores? My guess is you are using only one core for the calculations.

Alia Amer · April 16, 2016, 08:58

what do you mean by more cores?

flotus1 · April 16, 2016, 09:15

There is really not enough information to answer the initial question. Without knowing the hardware you ran the simulation on it is impossible to comment on the simulation time.
It might be normal on an old laptop or a machine with too little memory. It might be slow on a modern workstation.

April 12, 2016, 13:14	time needed to run a a simulation	#1
Alia Amer New Member Alia Amer Join Date: Mar 2016 Posts: 13 Rep Power: 10	i am simulating internal and external air flow inside a building using ansys flotran. i have a total element number of 2.5 million elements and the file is 19 GB. it took me 12 hours to run 100 iterations... is this normal????? please advise me since i am afraid that something might be wrong with my simulations or set up!

April 16, 2016, 09:15		#4
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,427 Rep Power: 49	There is really not enough information to answer the initial question. Without knowing the hardware you ran the simulation on it is impossible to comment on the simulation time. It might be normal on an old laptop or a machine with too little memory. It might be slow on a modern workstation. davidwilcox likes this.

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April 15, 2016, 03:08		#2
davidwilcox Senior Member david Join Date: Oct 2012 Posts: 142 Rep Power: 14	run the simulations using more cores? My guess is you are using only one core for the calculations.

April 16, 2016, 08:58		#3
Alia Amer New Member Alia Amer Join Date: Mar 2016 Posts: 13 Rep Power: 10	what do you mean by more cores?