kevin1986
Subscriber

Hello Mangesh,

Thanks for your reply. We did the comparison of different fluent version on SAME machines. We do have several workstations, but we did the comparison of different fluent version on SAME machine. We found the bandwidth is different on SAME machine. We suspect it comes from intelMPI. Although microsoft MPI of Fluent 2022 is also slow. 

The processors are amd epyc 7642/7543/7302. 16 DIMM of 16G. We have several workstations with different CPUs. But it should be noted we did the test on same machine. 

It should be noted that linux ansys fluent 2022 is much faster. The calcultion speed of linux fluent 2022 is the same with windows fluent 2020. 

Thanks for your reply.