# mpitutorial/mpitutorial

MPI programming lessons in C and executable code examples

Repository: https://github.com/mpitutorial/mpitutorial
Canonical: https://ross.abutalabs.com/products/mpitutorial
Homepage: http://mpitutorial.com
Language: C
License: NOASSERTION
License Family: other
Last push: 2026-08-11T18:27:51+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 35, longevity 100
- inputs: {"age_days": 5025, "days_push": 22, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2349, forks 753 (observed 2026-08-28T04:06:40.288988+00:00)

## What it is
The source for mpitutorial.com, a comprehensive set of tutorials on the Message Passing Interface (MPI) with executable C code examples for each lesson. It includes a run.py script to build and run all tutorial programs locally.

## Use cases
- learn MPI programming from scratch
- find example C code for MPI collectives like broadcast and scatter
- understand point-to-point communication in MPI
- run hands-on parallel programming exercises
- study MPI tutorials for an HPC course
- contribute or write new MPI lessons

## When to choose
- you are learning MPI for the first time and want guided lessons with runnable code
- you need reference C examples of MPI primitives like MPI_Send, MPI_Bcast, and MPI_Reduce
- you want a community-maintained tutorial site you can fork and extend

## When to avoid
- you need a production MPI library or runtime - use OpenMPI or MPICH instead
- you want tutorials for OpenMP, CUDA, or other parallel programming models
- you need actively developed, cutting-edge MPI content - the original author no longer contributes

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools, documentation
- domain: tutorials, developer-tools
- platform: cross-platform, cli
- tags: mpi, parallel-computing, hpc, message-passing, c-examples, distributed-computing, algorithms, linux, macos

## Member repositories
- mpitutorial/mpitutorial (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:40.288988+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:36:58.044763+00:00, confidence not recorded.
  - readme: https://github.com/mpitutorial/mpitutorial (fetched 2026-08-28T04:06:40.288988+00:00, sha 2563176b413e)
  - homepage: http://mpitutorial.com (fetched 2026-08-29T10:17:27.578905+00:00, sha 2639d4e37387)
  - site_page: https://mpitutorial.com/about (fetched 2026-08-29T10:17:27.581518+00:00, sha 80b53be08ecc)
- Data as of 2026-08-30T08:39:29.467469+00:00.