Hello all, I’d like to announce the following Errata issues/PRs for inclusion in the MPI 4.0 RC and voting at the December meeting. # 311: Fix wrong term "process group with Cartesian structure" in section 7.5.5 Issue: https://github.com/mpi-forum/mpi-issues/issues/311 PR: https://github.com/mpi-forum/mpi-standard/pull/280 pdf: https://github.com/mpi-forum/mpi-issues/files/5421661/topol_fix-unspecified-... # 314: Fix undefined behaviour of MPI_Cart/Graph*_get caused by binding to specific communicator creation calls Issue: https://github.com/mpi-forum/mpi-issues/issues/314 PR: https://github.com/mpi-forum/mpi-standard/pull/285 pdf: https://github.com/mpi-forum/mpi-issues/files/5476130/mpi-report-diff-ticket... # 315: Fix not precisely defined topology information for `MPI_Cart_sub` Issue: https://github.com/mpi-forum/mpi-issues/issues/315 PR: https://github.com/mpi-forum/mpi-standard/pull/286 pdf: https://github.com/mpi-forum/mpi-issues/files/5428496/topol-clarify-mpi-cart... I brought those issues in the topology chapter up during the last meeting. Since then there were several improvements for the PRs from within the Coll/Topology WG - especially for #314. Thanks for the support there! Best Christoph -- Christoph Niethammer High Performance Computing Center Stuttgart (HLRS) Nobelstrasse 19 70569 Stuttgart Tel: ++49(0)711-685-87203 email: [email protected] http://www.hlrs.de/people/niethammer