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