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I would like to buy computing time on HPC for fluent

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Old   December 13, 2016, 17:21
Default I would like to buy computing time on HPC for fluent
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Vaclav Piskacek
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Hello, iam under serious time pressure with my diploma thesis and I would like to accelerate it by using HPC (64-128 cores) Do you know any site that offers ANSYS FLUENT paid computing services? I have 2,5M cells, k-omega transient with 80 000 time steps (5,6M iterations in total approximately) Is that even possible to compute this amount of iterations in 2 weeks?
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Old   December 13, 2016, 23:44
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Originally Posted by skace View Post
Hello, iam under serious time pressure with my diploma thesis and I would like to accelerate it by using HPC (64-128 cores) Do you know any site that offers ANSYS FLUENT paid computing services? I have 2,5M cells, k-omega transient with 80 000 time steps (5,6M iterations in total approximately) Is that even possible to compute this amount of iterations in 2 weeks?

Can you give a bit more detail about this simulation? Can't suggest you about fluent but FVUS/wildkatze supports fluent mesh files and has what you asked. I have a 32 process machine that I could try but I can only spare that machine for 2 to 3 days. Now the fact that FVUS has hybrid solver that is implicit like fluent plus fractional, it in normal stance should be able to do in half the fluent time.
I could try to estimate cost of 1 time step and see if possible. (If you are not hard bound to Fluent only). Wildkatze is very close to fluent in algorithm.
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Old   December 14, 2016, 02:42
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Originally Posted by arjun View Post
Can you give a bit more detail about this simulation? Can't suggest you about fluent but FVUS/wildkatze supports fluent mesh files and has what you asked. I have a 32 process machine that I could try but I can only spare that machine for 2 to 3 days. Now the fact that FVUS has hybrid solver that is implicit like fluent plus fractional, it in normal stance should be able to do in half the fluent time.
I could try to estimate cost of 1 time step and see if possible. (If you are not hard bound to Fluent only). Wildkatze is very close to fluent in algorithm.
I really need something faster... 8 thread computing will take 277 days, I have access to computing at university, but its only 16 thread machine... need something faster and something what can do all the job.
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Old   December 14, 2016, 03:25
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I really need something faster... 8 thread computing will take 277 days, I have access to computing at university, but its only 16 thread machine... need something faster and something what can do all the job.

Yaa you are right you need something faster. I am running a transient VOF case on these 32 threads and so far in 21 hours it has run 200000 timesteps. This case is 100000 cells. So even if I scale things linearly you are looking at around 10 days of simulation time so yes, you need something better to finish in a week.
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