merge fixes

benchmarks/opencl/cutcp/macros.h

@@ -0,0 +1,69 @@
+#ifndef __MACROSH__
+#define __MACROSH__
+
+#ifdef __DEVICE_EMULATION__
+#define DEBUG
+/* define which grid block and which thread to examine */
+#define BX  0
+#define BY  0
+#define TX  0
+#define TY  0
+#define TZ  0
+#define EMU(code) do { \
+  if (blockIdx.x==BX && blockIdx.y==BY && \
+      threadIdx.x==TX && threadIdx.y==TY && threadIdx.z==TZ) { \
+    code; \
+  } \
+} while (0)
+#define INT(n)    printf("%s = %d\n", #n, n)
+#define FLOAT(f)  printf("%s = %g\n", #f, (double)(f))
+#define INT3(n)   printf("%s = %d %d %d\n", #n, (n).x, (n).y, (n).z)
+#define FLOAT4(f) printf("%s = %g %g %g %g\n", #f, (double)(f).x, \
+    (double)(f).y, (double)(f).z, (double)(f).w)
+#else
+#define EMU(code)
+#define INT(n)
+#define FLOAT(f)
+#define INT3(n)
+#define FLOAT4(f)
+#endif
+
+/* report error from OpenCL */
+#define CHECK_ERROR(errorMessage)           \
+  if(clStatus != CL_SUCCESS)                \
+  {                                         \
+     printf("Error: %s!\n",errorMessage);   \
+     printf("Line: %d\n",__LINE__);         \
+     exit(1);                               \
+  }
+
+/*
+ * neighbor list:
+ * stored in constant memory as table of offsets
+ * flat index addressing is computed by kernel
+ *
+ * reserve enough memory for 11^3 stencil of grid cells
+ * this fits within 16K of memory
+ */
+#define NBRLIST_DIM  11
+#define NBRLIST_MAXLEN (NBRLIST_DIM * NBRLIST_DIM * NBRLIST_DIM)
+
+/*
+ * atom bins cached into shared memory for processing
+ *
+ * this reserves 4K of shared memory for 32 atom bins each containing 8 atoms,
+ * should permit scheduling of up to 3 thread blocks per SM
+ */
+#define BIN_DEPTH         8  /* max number of atoms per bin */
+#define BIN_SIZE         32  /* size of bin in floats */
+#define BIN_CACHE_MAXLEN 32  /* max number of atom bins to cache */
+
+#define BIN_LENGTH      4.f  /* spatial length in Angstroms */
+#define BIN_INVLEN  (1.f / BIN_LENGTH)
+/* assuming density of 1 atom / 10 A^3, expectation is 6.4 atoms per bin
+ * so that bin fill should be 80% (for non-empty regions of space) */
+
+#define REGION_SIZE     512  /* number of floats in lattice region */
+#define SUB_REGION_SIZE 128  /* number of floats in lattice sub-region */
+
+#endif