MPIGetcountstatus
MPIGetcountstatus is a function within the Message Passing Interface (MPI) standard, specifically related to non-blocking receive operations. Its primary purpose is to check the status of a pending non-blocking receive request. When an MPI process initiates a non-blocking receive using MPI_Irecv, it is returned an MPI_Request object. This object represents the ongoing communication operation. MPIGetcountstatus allows the application to query whether this operation has completed and, if so, to retrieve information about it.
The function typically takes the MPI_Request object as an argument and can return information such as whether