Hands-On Parallel Programming with C# 8 and .NET Core 3

Basic send/receive use

MPI is a C++ implementation, and most of the documentation on the Microsoft website will only be available in C++. However, it's easy to create a .NET compiled wrapper and use it in any of our projects. There are some third-party .NET implementations available as well for MPI but, unfortunately, there is no support for .NET Core implementations as of now.

Here is the syntax of an MPI_Send function that sends a buffer of data to another processor:

int MPIAPI MPI_Send(  _In_opt_ void         *buf, //pointer to buffer containing Data to send           int          count, //Number of elements in buffer           MPI_Datatype datatype,//Datatype of element in buffer           int          dest, //rank of destination process           int          tag, //tag to distinguish between messages MPI_Comm ...