CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Hardware

Workstation for Ansys Fluent

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree4Likes
  • 1 Post By wkernkamp
  • 2 Post By flotus1
  • 1 Post By flotus1

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 13, 2022, 06:52
Smile Workstation for Ansys Fluent
  #1
New Member
 
Join Date: Oct 2021
Location: Italy
Posts: 6
Rep Power: 3
alc96 is on a distinguished road
Hi everyone, I am looking for a new workstation to perform a CFD simulation with the following conditions:

- Software: Ansys Fluent
- License constraints: no
- Type of Simulation: 3D Unsteady Reynolds Average Navier-Stokes simulation, single-phase incompressible flow, simulation of the wind turbine whole rotor with the sliding mesh approach
- Cell count: I don't know exactly but I think around 5 - 10 million
- GPU: It is just for post-processing so I think that a graphics card with 8 GB will be okay
- Budget: 15.000

After some research, I am focalized on Dell Workstation with the following features:
- CPU: Dual Intel Xeon Gold 6248R (24 cores, 6 memory channels, from 3,00 GHz up to 4,00 GHz Turbo)
- GPU: Nvidia T1000, 8GB
- RAM: 256 GB, 8 x 32 GB DDR4

I have read that core count and memory bandwidth need to be balanced, but this is the first time that buys a computer like this so I don't want to have missed something important in the process of analysis.

So do you think that this workstation could be okay for the application above?

Thank you
alc96 is offline   Reply With Quote

Old   December 13, 2022, 17:49
Default
  #2
Senior Member
 
Will Kernkamp
Join Date: Jun 2014
Posts: 236
Rep Power: 11
wkernkamp is on a distinguished road
Quote:
Originally Posted by alc96 View Post
Hi everyone, I am looking for a new workstation to perform a CFD simulation with the following conditions:

- Budget: 15.000

After some research, I am focalized on Dell Workstation with the following features:
- CPU: Dual Intel Xeon Gold 6248R (24 cores, 6 memory channels, from 3,00 GHz up to 4,00 GHz Turbo)
- GPU: Nvidia T1000, 8GB
- RAM: 256 GB, 8 x 32 GB DDR4

So do you think that this workstation could be okay for the application above?

Thank you

You have a very large budget available. So you could source a top of the line Dual AMD EPYC Genua system, which would outperform the system you selected.


See also discussion here: Workstation recommendation
alc96 likes this.
wkernkamp is offline   Reply With Quote

Old   December 14, 2022, 05:05
Default
  #3
New Member
 
Join Date: Oct 2021
Location: Italy
Posts: 6
Rep Power: 3
alc96 is on a distinguished road
Thank you, just to confirm: Dual AMD EPYC performs better because of the memory bandwidth right? (8 memory channels up to 3200 MHz while the Intel Processor has 6 memory channels up to 2933 MHz)

For example, the following workstation should be better (?):
- CPU: Dual AMD EPYC 7513 (32 x 2 cores, 8 x 2 memory channels up to 3200 MHz)
- RAM: 256 GB, populated as 16 x 16 GB DDR4, 3200 MHz

Last edited by alc96; December 14, 2022 at 08:36.
alc96 is offline   Reply With Quote

Old   December 14, 2022, 12:18
Default
  #4
Senior Member
 
Will Kernkamp
Join Date: Jun 2014
Posts: 236
Rep Power: 11
wkernkamp is on a distinguished road
Quote:
Originally Posted by alc96 View Post
Thank you, just to confirm: Dual AMD EPYC performs better because of the memory bandwidth right? (8 memory channels up to 3200 MHz while the Intel Processor has 6 memory channels up to 2933 MHz)

For example, the following workstation should be better (?):
- CPU: Dual AMD EPYC 7513 (32 x 2 cores, 8 x 2 memory channels up to 3200 MHz)
- RAM: 256 GB, populated as 16 x 16 GB DDR4, 3200 MHz

You are correct, but I think the best CPU is the 7773X. flotus, please confirm.
wkernkamp is offline   Reply With Quote

Old   December 14, 2022, 16:33
Default
  #5
Super Moderator
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,263
Rep Power: 44
flotus1 has a spectacular aura aboutflotus1 has a spectacular aura about
Correct, Milan-X had some pretty nice price cuts since Genoa was released. For obvious reasons, Genoa is just better. But you probably won't find anyone offering a workstation with 2x Epyc Genoa right now. And you won't find the parts you need to build it yourself. Last nor least, 15000€ might actually not be enough for parts to outperform dual-socket 7573X. Everything about Genoa is expensive.

So for now, Milan-X is still your best bet for workstations.
the 64-core 7773X retails for around 6000€ these days. Probably still too expensive for a 15000€ workstation.
So the 32-core 7573X seems like the best choice right now. Don't let your SI rip you off. These CPUs were ~6000$ at release, but now start at 3700€ retail.
wkernkamp and alc96 like this.
flotus1 is offline   Reply With Quote

Old   December 15, 2022, 03:22
Default
  #6
New Member
 
Join Date: Oct 2021
Location: Italy
Posts: 6
Rep Power: 3
alc96 is on a distinguished road
Thank you, just a last thing: there is any particular advice regarding hard drive devices? Does the choice of SSD or HHD have an impact on the performance of the workstation?
alc96 is offline   Reply With Quote

Old   December 15, 2022, 07:11
Default
  #7
Super Moderator
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,263
Rep Power: 44
flotus1 has a spectacular aura aboutflotus1 has a spectacular aura about
For the operating system and stuff, you definitely want an SSD. SATA or NVMe doesn't matter whole lot.
Fast SSDs can speed up the solver if you do lots of writes while the simulation is running. E.g. periodically saving transient results.
And an SSD will speed up tasks encountered in pre- and post-processing. Like loading the simulation results into your post-processing software.

Long story short: In this price range (or really any price range above low-budget), get at least a 2TB m.2 NVMe SSD for the operating system, programs, and your current simulation projects. These things cost less than 200€ these days.
How you do storage beyond that depends on use-case. With your sliding mesh URANS simulations, chances are you actually benefit from more fast storage.
alc96 likes this.
flotus1 is offline   Reply With Quote

Reply

Tags
ansys fluent, hardware specification, intel processor, workstation

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
choose AMD CPU of workstation for ANSYS fluent jonswap Hardware 1 October 28, 2021 15:50
Fluent Workstation for online rent hares FLUENT 4 December 13, 2016 13:32
32 CPUs Workstation V.S. Cluster for Fluent Anna Tian FLUENT 40 July 17, 2014 00:10
Fluent and Silicon Graphics workstation Swati Mohanty FLUENT 0 September 24, 2006 23:02
workstation for Fluent burley FLUENT 1 January 9, 2000 07:59


All times are GMT -4. The time now is 01:05.