Hello, Thanks. Besides compiling MPICH with xpmem support, are there any particular configuration options or environment variables needed for this to happen? Kind regards, Pascal Boeschoten On Mon, 29 Apr 2024 at 15:54, Zhou, Hui <[email protected]> wrote:

Yes, intra-node ipc including non-contig datatypes is supported via xpmem.

-- Hui Zhou ------------------------------ *From:* Pascal Boeschoten via discuss <[email protected]> *Sent:* Monday, April 29, 2024 2:37 AM *To:* [email protected] <[email protected]> *Cc:* Pascal Boeschoten <[email protected]> *Subject:* [mpich-discuss] Zero-copy non-contiguous types

Hello, Does MPICH support zero-copy intra-node communication for non-contiguous datatypes? Thanks, Pascal Boeschoten ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization.

ZjQcmQRYFpfptBannerEnd Hello,

Does MPICH support zero-copy intra-node communication for non-contiguous datatypes?

Thanks, Pascal Boeschoten