Yes, all datatypes are supported.

Hui Zhou

From: Palmer, Bruce J via discuss <discuss@mpich.org>
Sent: Wednesday, July 13, 2022 5:29 PM
To: discuss@mpich.org <discuss@mpich.org>
Cc: Palmer, Bruce <bruce.palmer@pnnl.gov>
Subject: [mpich-discuss] GPU-aware MPICH

Hi,

Does anyone know if GPU-aware MPICH supports MPI datatypes? In particular, can you use the subarray datatype (created with MPI_Type_create_subarray)?

Bruce Palmer