CUSP host function parallelization with openMP

Question

Is the CUSP host function also implemented in parallel with openMP? I am a bit confused since in the github discussion it says "added functionality in openMP" but there is no clear statement in the cusp that it is fully implemented with openMP.

Answer 1

CUSP is built on thrust .

Thrust can take advantage of OpenMP, for example as a device backend . Thrust now also has the ability to re-target the host backend as well.

This means that if you properly selected the thrust OMP backend, say for device activities, I think cusp should respect this and perform "device" operations on the host using OMP.