[mpich-discuss] Question about non-blocking MPI - 3

[Palmer, Bruce J]

As far as I know, you don’t have to use the MPI_ASYNC_PROGRESS settings with Intel MPI, either. However, you may see a huge boost in performance, at least for the onesided operations using MPI Windows.

Bruce Palmer

From: viet via discuss <discuss at mpich.org>
Sent: Thursday, January 7, 2021 4:08 AM
To: Zhou, Hui <zhouh at anl.gov>; discuss at mpich.org
Cc: teivml at gmail.com
Subject: Re: [mpich-discuss] Question about non-blocking MPI - 3

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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 <zhouh at anl.gov<mailto:zhouh at anl.gov>> wrote:
You don’t need any special settings to use non-blocking MPI collectives in MPICH.

--
Hui Zhou


From: viet via discuss <discuss at mpich.org<mailto:discuss at mpich.org>>
Date: Friday, December 4, 2020 at 7:12 AM
To: discuss at mpich.org<mailto:discuss at mpich.org> <discuss at mpich.org<mailto:discuss at mpich.org>>
Cc: teivml at gmail.com<mailto:teivml at gmail.com> <teivml at gmail.com<mailto:teivml at 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.
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