Markers for init and copy to investigate deviations

config.mk

@@ -3,7 +3,7 @@ TAG ?= GCC
 ENABLE_OPENMP ?= false
 
 #Feature options
-OPTIONS  =  -DSIZE=40000000ull
+OPTIONS  =  -DSIZE=100000000ull
 OPTIONS +=  -DNTIMES=10
 OPTIONS +=  -DARRAY_ALIGNMENT=64
 #OPTIONS +=  -DVERBOSE_AFFINITY

include_ICC.mk

@@ -5,8 +5,8 @@ ifeq ($(ENABLE_OPENMP),true)
 OPENMP   = -qopenmp
 endif
 
-CFLAGS   = -Ofast -xHost -std=c99 -ffreestanding $(OPENMP)
-LFLAGS   = $(OPENMP)
+CFLAGS   = -DLIKWID -DLIKWID_PERFMON -Ofast -xHost -std=c99 -ffreestanding $(OPENMP) $(LIKWID_INC)
+LFLAGS   = $(OPENMP) $(LIKWID_LIB) -llikwid
 DEFINES  = -D_GNU_SOURCE
 INCLUDES =
 LIBS     =

src/copy.c

@@ -26,6 +26,9 @@
  */
 
 #include <timing.h>
+#ifdef LIKWID
+#include <likwid.h>
+#endif
 
 double copy(
         double * restrict a,
@@ -36,10 +39,19 @@ double copy(
     double S, E;
 
     S = getTimeStamp();
-#pragma omp parallel for 
+#pragma omp parallel
+{
+#ifdef LIKWID
+    LIKWID_MARKER_START("COPY");
+#endif
+#pragma omp for 
     for (int i=0; i<N; i++) {
         a[i] = b[i];
     }
+#ifdef LIKWID
+    LIKWID_MARKER_STOP("COPY");
+#endif
+}
     E = getTimeStamp();
 
     return E-S;

src/init.c

@@ -26,6 +26,9 @@
  */
 
 #include <timing.h>
+#ifdef LIKWID
+#include <likwid.h>
+#endif
 
 double init(
         double * restrict a,
@@ -36,10 +39,20 @@ double init(
     double S, E;
 
     S = getTimeStamp();
-#pragma omp parallel for
+#pragma omp parallel
+{
+#ifdef LIKWID
+    LIKWID_MARKER_START("INIT");
+#endif
+#pragma omp for
+#pragma vector nontemporal
     for (int i=0; i<N; i++) {
         a[i] = scalar;
     }
+#ifdef LIKWID
+    LIKWID_MARKER_STOP("INIT");
+#endif
+}
     E = getTimeStamp();
 
     return E-S;

src/main.c

@@ -39,6 +39,10 @@
 #include <allocate.h>
 #include <affinity.h>
 
+#ifdef LIKWID
+#include <likwid.h>
+#endif
+
 #define HLINE "----------------------------------------------------------------------------\n"
 
 #ifndef MIN
@@ -105,6 +109,11 @@ int main (int argc, char** argv)
         {"SDaxpy:     ", 4, 2}
     };
 
+#ifdef LIKWID
+    LIKWID_MARKER_INIT;
+    LIKWID_MARKER_REGISTER("INIT");
+#endif
+
     a = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
     b = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
     c = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
@@ -201,6 +210,10 @@ int main (int argc, char** argv)
 
     check(a, b, c, d, N);
 
+#ifdef LIKWID
+    LIKWID_MARKER_CLOSE;
+#endif
+
     return EXIT_SUCCESS;
 }