A new alpha release of MPICH, 4.0a1, is now available for download. This is the first alpha release in the 4.0 series. This release adds implementations of many new APIs in the coming MPI 4.0 specification. Because the official MPI 4.0 specification is still in draft status, all the new API functions and symbols are implemented using MPIX prefix. You can find the release on our downloads page (https://www.mpich.org/downloads/). Users are welcome to test this release. Regards, The MPICH team =============================================================================== Changes in 4.0a1 =============================================================================== # Implemented basic MPI-4 session API using MPIX interface. # Implemented basic MPI-4 partitioned communication API using MPIX interface. # Implemented MPI-4 large-count API using MPIX interface. # Implemented MPI-4 Tool events API using MPIX_T interface. # Implemented MPI-4 persistent bcast -- MPIX_Bcast_init. # Implemented MPIX_Isendrecv and MPIX_Isendrecv_replace. # Implemented MPIX_Comm_idup_with_info. # Implemented MPIX_Delete_error_{class,code,string}. # Implemented MPIX_Info_get_string. # MPI_Info objects can be accessed before MPI_Init{_thread}. # Support explict --without-cuda configure option.