Kokkos Serial execution space is not tested with TeamPolicy.

[kyungjoo-kim]

Moved from Trilinos issue.

The following error comes from when I use Serial space (OpenMP space is okay). I think that the TeamPolicy does not work here. The Tpetra block crs matrix is already submitted to Christian's Trilinos repo and you can reproduce this error in CI testing.

/home/kyukim/Work/lib/trilinos/christian/packages/kokkos/core/src/Kokkos_Serial.hpp:672:9: error: no match for call to ‘(const Tpetra::Experimental::BlockCrsMatrix::localApplyBlockNoTrans(const Tpetra::Experimental::BlockMultiVector&, Tpetra::Experimental::BlockMultiVector&, Scalar, Scalar) [with Scalar = double; LO = int; GO = int; Node = Kokkos::Compat::KokkosDeviceWrapperNodeKokkos::Serial]::__lambda2) (Kokkos::Impl::ParallelFor::localApplyBlockNoTrans(const Tpetra::Experimental::BlockMultiVector&, Tpetra::Experimental::BlockMultiVector&, Scalar, Scalar) [with Scalar = double; LO = int; GO = int; Node = Kokkos::Compat::KokkosDeviceWrapperNodeKokkos::Serial]::__lambda2, Kokkos::TeamPolicyKokkos::Schedule<Kokkos::Dynamic, Kokkos::Serial>, Kokkos::Serial>::Member)’

[crtrott]

The title of this issue is misleading. TeamPolicy is getting tested on a nightly basis with the serial backend. That said we need to figure out where this problem is coming from, and whether it is caused by a bug in Kokkos or an issue in the usage inside of (this experimental branch of) Tpetra.

[kyungjoo-kim]

I did not read the error message carefully. The long template argument expansion make me tired of reading the message carefully. The error was in assignning an obejct to reference.
(Kokkos::Impl::SerialTeamMember to Kokkos::Impl::SerialTeamMember&). In the Kokkos unit tests, I see that member_type is passed with reference. Somehow it complains for this case.

[kyungjoo-kim]

Oh..... I am sorry that I did not put "const" in the Tpetra. I close this issue.