UCWO: UCX Wrapper for One-sideds

A CPP wrapper based on MPI and UCX to conveniently conduct one-sided communication.

Terms

A block of local memory on each process can be exposed so that it can be accessed remotely from another process. On each process, blocks are sequentially numbered according to the order when they are exposed. Other processes are able to visit these blocks using the index.

Usage

• A World is a thread-safe base class to provide connection and memory mapping. It is binded to an MPI comm.
• A World can expose multiple memory blocks.
• Multiple Worker instances are created by a World to conduct parallel communication.
• Each worker independently initiate put, get, or flush operations.

Notes

• A worker itself is not thread-safe.
• newWorker routine of World is a collective operation that involves all processes to involve. Only workers in the same newWorker call are connected. (Maybe optimize this in the future)