System Hardware Requirements for 3D Multiphase FLows.

rupak504 · August 23, 2017, 00:49

Hello friends

I want to buy a system to perform simulations on 3D Multiphase flows, and i want to know the system requirements so that, i am able to perform all the simulations without any difficulty and less time.

Thanks

flotus1 · August 23, 2017, 08:26

Rather a question for the hardware subsection of the forum.
However, you will have to provide more details in order to get a useful answer.

Quote:

so that, i am able to perform all the simulations without any difficulty and less time.

Less time than what? Depends on the size of your simulations and which hardware setup you are comparing the run time to. A budget for your new computer would also help.

BlnPhoenix · August 23, 2017, 08:34

For 3D multiphase simulations i usually recommend buying a Supercomputer.

flotus1 · August 23, 2017, 11:54

That's certainly one possible solution if you want to play it safe

ekrumrick · August 23, 2017, 12:42

Hello,
In my case, I am doing some RANS simulations in 2D and 3D, more or less 2 million cells.
I use an Intel Xeon E3 V3 server with 32 GB RAM.
This works fine for me.
Regards,

Sent from my XT890 using CFD Online Forum mobile app

rupak504 · August 24, 2017, 01:55

Quote:

Originally Posted by flotus1

Depends on the size of your simulations and which hardware setup you are comparing the run time to. A budget for your new computer would also help.

Dear Alex, my budget is around 4000$. I was planning to buy Precision T7910.

naffrancois · August 24, 2017, 17:15

Hello,

This really depends on what multiphase model you want to solve. Total number of dof will give you an idea of the RAM you need. Total dof depends on the mesh size but also on the total number of equations (number of phases and number of equations per phase), discretization type (first order FV is not the same as high order DG, explicit euler time stepping is not the same as high order RGK or implicit), etc. My working computer is based on a T7910, 16 3-years old cores and 64gb RAM memory. In terms of RAM memory I can solve more than 10 million elements for a 7 phase 5-equation/phase model with explicit time stepping. In terms of CPU time, though it is a whole different story... and honestly I am not that patient and run these simulations on a cluster.

To make it short, it is easy and rather cheap to design a desktop computer that will run your case. Evaluating computing time is not easy at all without more details.

August 23, 2017, 00:49	System Hardware Requirements for 3D Multiphase FLows.	#1
rupak504 Senior Member Lolita Join Date: Aug 2016 Posts: 115 Rep Power: 9	Hello friends I want to buy a system to perform simulations on 3D Multiphase flows, and i want to know the system requirements so that, i am able to perform all the simulations without any difficulty and less time. Thanks

August 23, 2017, 11:54		#4
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	That's certainly one possible solution if you want to play it safe Stevie_1200 likes this.

August 23, 2017, 12:42		#5
ekrumrick New Member Ezequiel Krumrick Join Date: Mar 2014 Location: Argentina Posts: 10 Rep Power: 12	Hello, In my case, I am doing some RANS simulations in 2D and 3D, more or less 2 million cells. I use an Intel Xeon E3 V3 server with 32 GB RAM. This works fine for me. Regards, Sent from my XT890 using CFD Online Forum mobile app __________________ Best regards, Ezequiel

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August 23, 2017, 08:34		#3
BlnPhoenix Senior Member Join Date: Aug 2014 Location: Germany Posts: 292 Rep Power: 13	For 3D multiphase simulations i usually recommend buying a Supercomputer.

August 24, 2017, 17:15		#7
naffrancois Senior Member Join Date: Oct 2011 Posts: 239 Rep Power: 16	Hello, This really depends on what multiphase model you want to solve. Total number of dof will give you an idea of the RAM you need. Total dof depends on the mesh size but also on the total number of equations (number of phases and number of equations per phase), discretization type (first order FV is not the same as high order DG, explicit euler time stepping is not the same as high order RGK or implicit), etc. My working computer is based on a T7910, 16 3-years old cores and 64gb RAM memory. In terms of RAM memory I can solve more than 10 million elements for a 7 phase 5-equation/phase model with explicit time stepping. In terms of CPU time, though it is a whole different story... and honestly I am not that patient and run these simulations on a cluster. To make it short, it is easy and rather cheap to design a desktop computer that will run your case. Evaluating computing time is not easy at all without more details.