Fix mean computation for zero sized ranks

ginkgo-project / ginkgo

Numerical linear algebra software package

https://ginkgo-project.github.io/

BSD 3-Clause "New" or "Revised" License

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Fix mean computation for zero sized ranks #1632

Closed greole closed 5 months ago

greole commented 5 months ago

This PR makes sure to not divide by zero when calculating the mean of a distributed vector. This otherwise might occur if some ranks hold a local vector of length zero after repartitioning a matrix or vector.

sonarcloud[bot] commented 5 months ago

Quality Gate failed

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D Maintainability Rating on New Code (required ≥ A)

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