Create new error message so we can better pinpoint where an error occurs.

This commit was SVN r32303.

ompi/mca/common/cuda/common_cuda.c

@@ -719,7 +719,7 @@ static int mca_common_cuda_stage_three_init(void)
             if (res != CUDA_SUCCESS) {
                 /* If registering the memory fails, print a message and continue.
                  * This is not a fatal error. */
-                opal_show_help("help-mpi-common-cuda.txt", "cuMemHostRegister failed",
+                opal_show_help("help-mpi-common-cuda.txt", "cuMemHostRegister during init failed",
                                true, mem_reg->ptr, mem_reg->amount,
                                ompi_process_info.nodename, res, mem_reg->msg);
             } else {

ompi/mca/common/cuda/help-mpi-common-cuda.txt

@@ -36,6 +36,12 @@ ensure that there is a CUDA context prior to calling MPI_Init.
 NOTE: You can turn off this warning by setting the MCA parameter
       mpi_common_cuda_warning to 0.
 #
+[cuMemHostRegister during init failed]
+The call to cuMemHostRegister(%p, %d, 0) failed.
+  Host:  %s
+  cuMemHostRegister return value:  %d
+  Memory Pool:  %s
+#
 [cuMemHostRegister failed]
 The call to cuMemHostRegister(%p, %d, 0) failed.
   Host:  %s