Fix thread synchronization in customCentroidBond.cl

platforms/opencl/src/kernels/customCentroidBond.cl

@@ -27,37 +27,41 @@ __kernel void computeGroupCenters(__global const real4* restrict posq, __global
         temp[thread].x = center.x;
         temp[thread].y = center.y;
         temp[thread].z = center.z;
+
         barrier(CLK_LOCAL_MEM_FENCE);
         if (thread < 32) {
             temp[thread].x += temp[thread+32].x;
             temp[thread].y += temp[thread+32].y;
             temp[thread].z += temp[thread+32].z;
+        }
+
         SYNC_WARPS;
         if (thread < 16) {
             temp[thread].x += temp[thread+16].x;
             temp[thread].y += temp[thread+16].y;
             temp[thread].z += temp[thread+16].z;
-                SYNC_WARPS;
         }
+        SYNC_WARPS;
         if (thread < 8) {
             temp[thread].x += temp[thread+8].x;
             temp[thread].y += temp[thread+8].y;
             temp[thread].z += temp[thread+8].z;
-                SYNC_WARPS;
         }
+
+        SYNC_WARPS;
         if (thread < 4) {
             temp[thread].x += temp[thread+4].x;
             temp[thread].y += temp[thread+4].y;
             temp[thread].z += temp[thread+4].z;
-                SYNC_WARPS;
         }
+        SYNC_WARPS;
         if (thread < 2) {
             temp[thread].x += temp[thread+2].x;
             temp[thread].y += temp[thread+2].y;
             temp[thread].z += temp[thread+2].z;
-                SYNC_WARPS;
-            }
         }
+
+        SYNC_WARPS;
         if (thread == 0)
             centerPositions[group] = (real4) (temp[0].x+temp[1].x, temp[0].y+temp[1].y, temp[0].z+temp[1].z, 0);
     }