message: In CMake, skip tests of parallel device examples when MPI is off.
diff: @@ -126,7 +126,7 @@ if (MFEM_TEST_DEVICE)
  if (NOT (${TEST_NAME} MATCHES ".*p$"))
  add_test(NAME ${TEST_NAME}_${MFEM_TEST_DEVICE}_ser
  COMMAND ${TEST_NAME} ${THIS_TEST_OPTIONS})
  - else()
  + elseif (MFEM_USE_MPI)
  add_test(NAME ${TEST_NAME}_${MFEM_TEST_DEVICE}_np=${MFEM_MPI_NP}
  COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} ${MFEM_MPI_NP}
  ${MPIEXEC_PREFLAGS}
  