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

--
Hui Zhou
From: Pascal Boeschoten via discuss <discuss@mpich.org>
Sent: Monday, April 29, 2024 2:37 AM
To: discuss@mpich.org <discuss@mpich.org>
Cc: Pascal Boeschoten <pascal.boeschoten@hapteon.com>
Subject: [mpich-discuss] Zero-copy non-contiguous types
 
Hello, Does MPICH support zero-copy intra-node communication for non-contiguous datatypes? Thanks, Pascal Boeschoten ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž ž
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Hello,

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

Thanks,
Pascal Boeschoten