Dear Hui Zhou, Thank you for your response to this thread. Could you give me some references on this issue? It seems that the below environment setting is necessary. MPICH_ASYNC_PROGRESS=1 Thank you for anything you can provide. Best, Viet. On Tue, Jan 5, 2021 at 5:59 AM Zhou, Hui <[email protected]> wrote:

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

-- Hui Zhou

*From: *viet via discuss <[email protected]> *Date: *Friday, December 4, 2020 at 7:12 AM *To: *[email protected] <[email protected]> *Cc: *[email protected] <[email protected]> *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.