BlueGene/Q Verlet cut-off scheme kernels

[alexxy/gromacs.git] / src / mdlib / nbnxn_kernels / simd_2xnn / nbnxn_kernel_simd_2xnn_common.h

diff --git a/src/mdlib/nbnxn_kernels/simd_2xnn/nbnxn_kernel_simd_2xnn_common.h b/src/mdlib/nbnxn_kernels/simd_2xnn/nbnxn_kernel_simd_2xnn_common.h
index e03e9015bd2f450300cf6a45961c541c8bf1bc2e..fdf53b39b8dc875dbe718405be71f13e17c0703e 100644 (file)
--- a/src/mdlib/nbnxn_kernels/simd_2xnn/nbnxn_kernel_simd_2xnn_common.h
+++ b/src/mdlib/nbnxn_kernels/simd_2xnn/nbnxn_kernel_simd_2xnn_common.h
@@ -39,6 +39,9 @@
 #include "maths.h"
 #endif
 
+#ifndef GMX_SIMD_J_UNROLL_SIZE
+#error "Need to define GMX_SIMD_J_UNROLL_SIZE before including the 2xnn kernel common header file"
+#endif
 
 #define SUM_SIMD4(x) (x[0]+x[1]+x[2]+x[3])