ocl: minor fixes and adjustments #1832

Job	Run time
build-on-opencl (OPENMP=ON, SMM=libxsmm)	9m 20s
build-on-cuda (OPENMP=ON)	9m 18s
build-and-test (MPI=ON, OPENMP=ON, SMM=blas, openmpi)	4m 13s
build-on-rocm (OPENMP=ON, G2G=ON)	4m 11s
build-and-test (MPI=ON, OPENMP=ON, SMM=blas, mpich)	4m 1s
build-on-rocm (OPENMP=ON, G2G=OFF)	20m 41s
build-and-test (MPI=ON, OPENMP=ON, SMM=libxsmm, openmpi)	4m 8s
build-and-test (MPI=ON, OPENMP=ON, SMM=libxsmm, mpich)	3m 45s
pre-commit	1m 0s
build-and-test (MPI=ON, OPENMP=OFF, SMM=blas, openmpi)	4m 4s
build-and-test (MPI=ON, OPENMP=OFF, SMM=blas, mpich)	3m 41s
build-and-test (MPI=ON, OPENMP=OFF, SMM=libxsmm, openmpi)	3m 51s
build-and-test (MPI=ON, OPENMP=OFF, SMM=libxsmm, mpich)	3m 30s
build-and-test (MPI=OFF, OPENMP=ON, SMM=blas, openmpi)	5m 36s
build-and-test (MPI=OFF, OPENMP=ON, SMM=libxsmm, openmpi)	5m 23s
build-and-test (MPI=OFF, OPENMP=OFF, SMM=blas, openmpi)	3m 38s
build-and-test (MPI=OFF, OPENMP=OFF, SMM=libxsmm, openmpi)	3m 15s
Combine & check coverage.	25s
	1h 34m 0s

Provide feedback