BlueGene/Q Verlet cut-off scheme kernels

[alexxy/gromacs.git] / src / kernel / runner.c

diff --git a/src/kernel/runner.c b/src/kernel/runner.c
index a3ec7bf62d4f3ec5e7d65e0f1f4e9b5a319fc7b5..147337e6ca8af9f3f7c8ddb7ea59c1d2aee4c432 100644 (file)
--- a/src/kernel/runner.c
+++ b/src/kernel/runner.c
@@ -1011,6 +1011,15 @@ int mdrunner(gmx_hw_opt_t *hw_opt,
                 gmx_fatal(FARGS, "GPU requested, but can't be used without cutoff-scheme=Verlet");
             }
         }
+#ifdef GMX_IS_BGQ
+        else
+        {
+            md_print_warn(cr, fplog,
+                          "NOTE: There is no SIMD implementation of the group scheme kernels on\n"
+                          "      BlueGene/Q. You will observe better performance from using the\n"
+                          "      Verlet cut-off scheme.\n");
+        }
+#endif
     }
 #ifndef GMX_THREAD_MPI
     if (PAR(cr))