You don’t need any special settings to use non-blocking MPI collectives in MPICH.

-- 
Hui Zhou

From: viet via discuss <discuss@mpich.org>
Date: Friday, December 4, 2020 at 7:12 AM
To: discuss@mpich.org <discuss@mpich.org>
Cc: teivml@gmail.com <teivml@gmail.com>
Subject: [mpich-discuss] Question about non-blocking MPI - 3

Hello everyone,

What is the environment setting for the use of non-blocking MPI-3 * collectives in mpich3.3?

In Intel MPI, the setting is as follows

$ export I_MPI_ASYNC_PROGRESS=1
$ export I_MPI_ASYNC_PROGRESS_PIN=<CPU list>

Is there an equivalent setting in mpich3.3?
Thank you,
Viet.