open-mpi/ompi

Health v2 · maintenance only

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Adoption not part of the score

2633 stars · 988 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Open MPI is an open-source, standards-conformant implementation of the Message Passing Interface (MPI) for high-performance computing, developed by a consortium of academic, research, and industry partners. It provides a portable, component-based message-passing library supporting MPI-3.1/4.0, thread safety, fault tolerance, heterogeneous networks, and many job schedulers and operating systems.

Use cases

• run parallel scientific simulations across a cluster
• message passing between processes in an HPC application
• write Fortran or C programs that scale across many nodes
• set up an MPI runtime for a supercomputing workload
• port parallel code across different network interconnects
• learn parallel programming with MPI

When to choose

• you need a production-quality, fully MPI-conformant implementation for HPC
• your cluster uses heterogeneous networks and you want one library supporting all of them
• you need fault tolerance, thread safety, and broad scheduler integration
• you want an actively maintained, open-source MPI with strong community support

When to avoid

• you only need shared-memory threading within one node (use OpenMP instead)
• you need a lightweight MPI for embedded or resource-constrained devices
• you want a simple message queue for distributed web services rather than tightly coupled parallel jobs

Facets

library · maturity stable

concurrency networking sdk developer-tools microservices gpu-computing performance developer-tools operating-systems windows cross-platform cpp c mpi hpc message-passing parallel-computing fortran cluster-computing interconnect linux macos gpu

Member repositories

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markdown · JSON · MCP: product_card(name="open-mpi/ompi")