We're getting close: 4.1.0rc4 is now available. https://www.open-mpi.org/software/ompi/v4.1/
The list of things left before v4.1.0 is final is getting very, very short. Changes since rc3: - Configury fixes for macOS Big Sur - Minor one-sided RDMA performance improvements - Fix OSHMEM compile error with some compilers - hcoll: Scatterv MPI_IN_PLACE fixes - mtl/ofi: Check cq_data_size without querying providers again - Fix computation of process relative locality We made an rc3 a short while ago, but I neglected to send the email about it. So here's the list of differences since rc2: - HAN and ADAPT coll modules - UCX zero-size datatype transfer fixes - Take more steps towards "reproducible" builds - AVX fixes - Updates for mpirun(1) man page about "slots" and PE=x values - Fix buffer allocation for large environment variables - Fix cpu-list for non-uniform nodes - Update Internal PMIx to OpenPMIx v3.2.1 - Disable man pages for internal OpenPMIx - Fix some symbol pollution - Make Type_create_resized set FLAG_USER_UB - Fix OFI configury CPPFLAGS to find fabric.h - mtl/ofi: Do not fail if error CQ is empty - mtl/ofi: Fix erroneous FI_PEEK/FI_CLAIM usage - Update coll tuned thresholds for modern HPC environments -- Jeff Squyres jsquy...@cisco.com