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spack.io "debugging-tool" keyword

rempi 1.1.0
ReMPI is a record-and-replay tool for MPI applications.
2 versions - Latest release: almost 4 years ago - 30 stars on GitHub
pruners-ninja 1.0.1
NINJA: Noise Inject agent tool to expose subtle and unintended message races.
3 versions - Latest release: almost 4 years ago - 8 stars on GitHub