OpenMPI is an open-source software library that enables high-performance computing by allowing multiple computers to work together on a single task. It implements the Message Passing Interface (MPI) standard, which facilitates communication between processes running on different machines in a network. This makes it ideal for parallel computing applications, where tasks can be divided and executed simultaneously. Developed by a consortium of academic, research, and industry partners, OpenMPI supports a variety of hardware architectures and network protocols. It is widely used in scientific research, simulations, and data analysis, providing a flexible and efficient way to harness the power of multiple processors.