https://github.com/sbromberger/gompi

OpenMPI bindings for the Go programming language
https://github.com/sbromberger/gompi

go golang hpc mpi openmpi parallel

Last synced: 6 months ago
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OpenMPI bindings for the Go programming language

• Host: GitHub
• URL: https://github.com/sbromberger/gompi
• Owner: sbromberger
• License: other
• Created: 2019-10-15T17:52:52.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2025-08-08T06:55:24.000Z (7 months ago)
• Last Synced: 2025-09-08T21:43:02.995Z (6 months ago)
• Topics: go, golang, hpc, mpi, openmpi, parallel
• Language: Go
• Homepage:
• Size: 60.5 KB
• Stars: 43
• Watchers: 1
• Forks: 3
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
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GoMPI: Message Passing Interface for Parallel Computing

The `gompi` package is a lightweight wrapper to the [OpenMPI](https://www.open-mpi.org) C++ library

designed to develop algorithms for parallel computing.

GoMPI is a fork of the [gosl](https://github.com/cpmech/gosl) MPI library with additional methods.

## Installation

1) install [OpenMPI](https://www.open-mpi.org) for your system

2) ensure  [golang.org/x/tools/cmd/stringer](https://godoc.org/golang.org/x/tools/cmd/stringer) is installed (`go install` if not)

3) run `make install`

(Other `make` options include `test`, `build`, and `clean`.)

## Performance

Note: latency benchmarks updated August 2025.

OSU bechmarks run using `mpirun -n 2 ./osu_latency -i 1000 -x 200` with datatype = `MPI_Char`.

GoMPI benchmarks run using `mpirun -n 2 go run latency.go`.

| message size (bytes) | GoMPI (µs) | OSU MPI Latency Test v7.5 (µs) |

|---|---|---|

| 1 | 0.16 | 0.11 |

| 2 | 0.18 | 0.11 |

| 4 | 0.16 | 0.11 |

| 8 | 0.17 | 0.11 |

| 16 | 0.17 | 0.11 |

| 32 | 0.17 | 0.11 |

| 64 | 0.17 | 0.12 |

| 128 | 0.19 | 0.13 |

| 256 | 0.19 | 0.16 |

| 512 | 0.28 | 0.26 |

| 1024 | 0.29 | 0.28 |

| 2048 | 0.34 | 0.35 |

| 4096 | 0.76 | 0.77 |

| 8192 | 0.92 | 0.88 |

| 16384 | 1.28 | 1.10 |

| 32768 | 1.96 | 1.45 |

| 65536 | 3.07 | 2.59 |

| 131072 | 4.48 |  4.98 |

| 262144 | 7.71 | 7.64 |

| 524288 | 13.71 | 13.25 |

| 1048576 | 25.99 | 25.25 |

| 2097152 | 56.97 | 49.65 |

| 4194304 | 140.32 | 244.79 |

Benchmark code may be found in `cmd/latency.go`.