Dual processor with 1 cfx solver

Nheni · January 20, 2022, 10:28

Dear All,

I was confused while vacillating which workstation do I buy for my existing license. I have 1 ansys cfx solver license and 16 hpc license, I attache a picture about it. It means that I can run simulations in 16 cores, right? Can I use dual processors (example 8+8 cores) with my existing license, or I need 2 licenses for these two processors?

Thank you,
Henrietta

forum.PNG

flotus1 · January 20, 2022, 11:12

I'm a bit out of the loop with the license shenanigans of Ansys.
I think that with current versions, you get 4 threads with the basic solver license, plus 1 additional thread for each HPC license. I might be wrong about that though, better check with whoever bought these licenses for you, or with Ansys directly.
That would mean you can run a single simulation using 20 threads, i.e. 20 cores.

Anyway, about your original question: you can distribute the workload for a single simulation however you deem fit. You are not limited to a certain number of physical CPUs or sockets. If you wanted to, you could distribute those 20 threads across 20 nodes of a cluster. A workstation with two CPUs is definitely fine.

evcelica · January 20, 2022, 15:21

Flotus1 is correct, up to 20 cores, distributed any way you like.
Unless acfd_solver is a "legacy" license. then it would be 1 core for free, and HPC licences offer you additional cores, but it takes 2 HPCs to use 2 cores. So up to 16 with 16 HPCs.
Just run a test model with 4 cores and see if it makes you use any HPCs or not.

Nheni · January 21, 2022, 10:02

Thank you for your quick answers, then I will be searching braver between dual cpu workstations.

It was sound good the 20 total core, and I found an article about it, that this truly how it works, but no matter how many core simulation I start, always reserve the same number of hpc licenses. Maybe I have a solver license that can't run a simulation on its own? Of course, my licenses are legal.

Thanks again,
Henrietta

January 20, 2022, 10:28	Dual processor with 1 cfx solver	#1
Nheni New Member PG company Join Date: Feb 2021 Posts: 16 Rep Power: 5	Dear All, I was confused while vacillating which workstation do I buy for my existing license. I have 1 ansys cfx solver license and 16 hpc license, I attache a picture about it. It means that I can run simulations in 16 cores, right? Can I use dual processors (example 8+8 cores) with my existing license, or I need 2 licenses for these two processors? Thank you, Henrietta forum.PNG

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January 20, 2022, 11:12		#2
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	I'm a bit out of the loop with the license shenanigans of Ansys. I think that with current versions, you get 4 threads with the basic solver license, plus 1 additional thread for each HPC license. I might be wrong about that though, better check with whoever bought these licenses for you, or with Ansys directly. That would mean you can run a single simulation using 20 threads, i.e. 20 cores. Anyway, about your original question: you can distribute the workload for a single simulation however you deem fit. You are not limited to a certain number of physical CPUs or sockets. If you wanted to, you could distribute those 20 threads across 20 nodes of a cluster. A workstation with two CPUs is definitely fine.

January 20, 2022, 15:21		#3
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	Flotus1 is correct, up to 20 cores, distributed any way you like. Unless acfd_solver is a "legacy" license. then it would be 1 core for free, and HPC licences offer you additional cores, but it takes 2 HPCs to use 2 cores. So up to 16 with 16 HPCs. Just run a test model with 4 cores and see if it makes you use any HPCs or not.

January 21, 2022, 10:02		#4
Nheni New Member PG company Join Date: Feb 2021 Posts: 16 Rep Power: 5	Thank you for your quick answers, then I will be searching braver between dual cpu workstations. It was sound good the 20 total core, and I found an article about it, that this truly how it works, but no matter how many core simulation I start, always reserve the same number of hpc licenses. Maybe I have a solver license that can't run a simulation on its own? Of course, my licenses are legal. Thanks again, Henrietta