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GoMPI: Message Passing Interface for Parallel Computing
The gompi package is a lightweight wrapper to the OpenMPI C++ library
designed to develop algorithms for parallel computing.
GoMPI is a fork of the gosl MPI library with additional methods.
Installation
- install OpenMPI for your system
- ensure golang.org/x/tools/cmd/stringer is installed (
go getif not) - run
make install
(Other make options include test, build, and clean.)
Performance
The latency benchmarks are as follows (note: the Go benchmark does not test a message size of zero bytes):
| message size (bytes) | GoMPI (µs) | OSU MPI Latency Test v5.8 (µs) |
|---|---|---|
| 0 | n/a | 0.36 |
| 1 | 0.45 | 0.33 |
| 2 | 0.45 | 0.32 |
| 4 | 0.42 | 0.31 |
| 8 | 0.45 | 0.30 |
| 16 | 0.43 | 0.32 |
| 32 | 0.43 | 0.32 |
| 64 | 0.43 | 0.32 |
| 128 | 0.45 | 0.35 |
| 256 | 0.47 | 0.37 |
| 512 | 0.60 | 0.41 |
| 1024 | 0.66 | 0.34 |
| 2048 | 0.74 | 0.45 |
| 4096 | 2.01 | 1.51 |
| 8192 | 2.75 | 1.82 |
| 16384 | 3.61 | 2.36 |
| 32768 | 4.83 | 3.32 |
| 65536 | 9.24 | 4.96 |
| 131072 | 17.15 | 10.53 |
| 262144 | 31.09 | 23.07 |
| 524288 | 57.01 | 43.78 |
| 1048576 | 117.72 | 84.43 |
| 2097152 | 235.34 | 220.47 |
| 4194304 | 599.43 | 619.64 |
Benchmark code may be found in cmd/latency.go.