Vikunja is a performance portable algorithm library that defines functions operating on ranges of elements for a variety of purposes . It supports the execution on multi-core CPUs and various GPUs. Vikunja uses alpaka to implement platform-independent primitives such as reduce or transform.
During the work on PR #31 I found out, that setting the CMake variable
ALPAKA_CXX_STANDARD
could going wrong. I should verify the CMake of vikunja.