Need a suggestion for a good machine to simulate FSI problems

malekan.cfd · December 12, 2017, 14:22

Dear All,

I have a fluid-structure interaction problem dealing with big deformation in the structural part. My current machine is an Intel Core i7 with 3.60GHz velocity and 32 GB RAM, which I think is a good machine. But, it take too much time to run a 2 seconds run, almost 24 hours. Is it related to writting outputs, which I may need a SSD hard drive to accelerate that?

Structural mesh has about 5000 elements and Fluent part has around 300,000 elements. I don not want to reduce number of elements. I do have a grant to buy another machine, so what do you think is better to get?

Regards,
Malekan

MakisH · December 12, 2017, 20:36

If writing output is the problem, an SSD would not really solve your problem. While an SSD is usually much faster than an HDD, it is still much much slower than the RAM.

Have you tried running the same simulation without any output before the end time?

malekan.cfd · December 13, 2017, 08:58

Dear MakisH,

Thanks for your comment. I will try to run the problem without any output until the end time, to see what I can get!

Regards,
Malekan

December 12, 2017, 14:22	Need a suggestion for a good machine to simulate FSI problems	#1
malekan.cfd Member Join Date: Dec 2017 Posts: 34 Rep Power: 9	Dear All, I have a fluid-structure interaction problem dealing with big deformation in the structural part. My current machine is an Intel Core i7 with 3.60GHz velocity and 32 GB RAM, which I think is a good machine. But, it take too much time to run a 2 seconds run, almost 24 hours. Is it related to writting outputs, which I may need a SSD hard drive to accelerate that? Structural mesh has about 5000 elements and Fluent part has around 300,000 elements. I don not want to reduce number of elements. I do have a grant to buy another machine, so what do you think is better to get? Regards, Malekan

December 13, 2017, 08:58	Thanks	#3
malekan.cfd Member Join Date: Dec 2017 Posts: 34 Rep Power: 9	Dear MakisH, Thanks for your comment. I will try to run the problem without any output until the end time, to see what I can get! Regards, Malekan

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December 12, 2017, 20:36		#2
MakisH Member Join Date: May 2016 Posts: 33 Rep Power: 10	If writing output is the problem, an SSD would not really solve your problem. While an SSD is usually much faster than an HDD, it is still much much slower than the RAM. Have you tried running the same simulation without any output before the end time?