I noticed now that the phist+ghost+CUDA tests have been failing since more than a month...
The reason I didn't notce it before is that the bug causes a hanging MPI run and the test is aborted without notification after a timeout.
The failing test can be reproduced by
env GHOST_TYPE=cuda ./phist-1.3.1-kernels-test --gtest_filter=*fused_spmv_mvTmv
It Looks like there is an error message from GEMM in some fallback variant on the GPU, and in hybrid CPU/GPU mode the progrm just hangs because the error is not propagated to the other processes (we don't do that in phist, may be our fault).
putting the priority of the issue to critical because we don't see any tests anymore