ansys 2020默认有两种MPI模式：intel 和msmpi

默认为intel

二者比较，

intel的速度比msmpi快不少。

可能具体的机子不同。

需要分别跑一跑，试一试。

Table 43.3: Available MPIs for Windows Platforms

(1) Used with Shared Memory Machine (SHM) where the memory is shared between the processors on a single machine.

(2) Used with a job scheduler to run on a Windows high performance computing server (HPC).

(3) Used with Distributed Memory Machine (DMM) where each processor has its own memory associated with it.

(4) By default, the Intel MPI may fail when mixing hardware for compute nodes. As a workaround, you can use the following environment setting:

I_MPI_PLATFORM zero