April 7, 2023 at 11:56 amkevin1986Subscriber
This days we did the test again. In one workstation (amd epyc 7402 CPU, 16*16G RAM, windows 10 and win server 2019), we installed ANSYS Fluent 2020r2 and 2021/2022/2023. Fluent 2020r2 is much faster than others. By a deep investigation, it comes from the extremely low bandwidth, no matter its intel2018 or intel2019/2021.
This problem does not exist in CentOS. In CENTOS, ANSYS Fluent 2022's speed is the SAME with 2020r2.
I would suspect it is a bug only happed in windows and I hope the tech can double check this issue.
This is the updated version of this topic: https://forum.ansys.com/forums/topic/fluent-2022-r1-slow-bandwitdth/
I am sorry about the picture. but it looks too big...
April 9, 2023 at 6:29 amkevin1986Subscriber
I can make it clearer. The tests I did are quite simple. So I dont think I made any mistakes:
1) prepare 4 SSDs, install different Fluent versions;
2) run them and compare the speed;
April 11, 2023 at 6:04 amkevin1986Subscriber
1) For Fluent 21/22/23, msmpi is much faster than intelmpi.
2) Using msmpi, Fluent 21/22/23 is slower than Fluent 2020 with intelmpi.
April 17, 2023 at 4:51 amkevin1986Subscriber
I am wondering if someone can give me a hint😀
April 19, 2023 at 7:48 amkevin1986Subscriber
And if it is possible to pay to handle this problem. I am also willing to do it. Please let me know.
May 15, 2023 at 12:36 pmMangesh BhideAnsys Employee
Hello. Please refer to details of tested hardware and software configuration in
May 15, 2023 at 1:25 pmkevin1986Subscriber
Hi Mangesh, thanks for your info. I downloaded lots of these documents and printed them. Unfortunatelly, they are tested in linux system. In linux, I did not see this issue either. This issue I reported ONLY happens in Windows system. Unfortunally I cannot find any information that can help me to handle this problem.
If it is possible, I would like to sign a contract to suppot ANSYS to debug further about this issue.
May 15, 2023 at 2:52 pmMangesh BhideAnsys Employee
Please contact your local Ansys Sales office.
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