[rtems commit] benchmarks/whetstone: Import
Sebastian Huber
sebh at rtems.org
Wed Mar 29 06:13:32 UTC 2017
Module: rtems
Branch: master
Commit: 3785f937797132ecf78006c62bd3cae1a132a832
Changeset: http://git.rtems.org/rtems/commit/?id=3785f937797132ecf78006c62bd3cae1a132a832
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Tue Mar 28 13:14:00 2017 +0200
benchmarks/whetstone: Import
Import whetstone sources from:
http://www.netlib.org/benchmark/whetstone.c
Update #2958.
---
testsuites/benchmarks/whetstone/whetstone.c | 433 ++++++++++++++++++++++++++++
1 file changed, 433 insertions(+)
diff --git a/testsuites/benchmarks/whetstone/whetstone.c b/testsuites/benchmarks/whetstone/whetstone.c
new file mode 100644
index 0000000..159a11a
--- /dev/null
+++ b/testsuites/benchmarks/whetstone/whetstone.c
@@ -0,0 +1,433 @@
+/*
+ * C Converted Whetstone Double Precision Benchmark
+ * Version 1.2 22 March 1998
+ *
+ * (c) Copyright 1998 Painter Engineering, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is granted to use, duplicate, and
+ * publish this text and program as long as it
+ * includes this entire comment block and limited
+ * rights reference.
+ *
+ * Converted by Rich Painter, Painter Engineering, Inc. based on the
+ * www.netlib.org benchmark/whetstoned version obtained 16 March 1998.
+ *
+ * A novel approach was used here to keep the look and feel of the
+ * FORTRAN version. Altering the FORTRAN-based array indices,
+ * starting at element 1, to start at element 0 for C, would require
+ * numerous changes, including decrementing the variable indices by 1.
+ * Instead, the array E1[] was declared 1 element larger in C. This
+ * allows the FORTRAN index range to function without any literal or
+ * variable indices changes. The array element E1[0] is simply never
+ * used and does not alter the benchmark results.
+ *
+ * The major FORTRAN comment blocks were retained to minimize
+ * differences between versions. Modules N5 and N12, like in the
+ * FORTRAN version, have been eliminated here.
+ *
+ * An optional command-line argument has been provided [-c] to
+ * offer continuous repetition of the entire benchmark.
+ * An optional argument for setting an alternate LOOP count is also
+ * provided. Define PRINTOUT to cause the POUT() function to print
+ * outputs at various stages. Final timing measurements should be
+ * made with the PRINTOUT undefined.
+ *
+ * Questions and comments may be directed to the author at
+ * r.painter at ieee.org
+ */
+/*
+C**********************************************************************
+C Benchmark #2 -- Double Precision Whetstone (A001)
+C
+C o This is a REAL*8 version of
+C the Whetstone benchmark program.
+C
+C o DO-loop semantics are ANSI-66 compatible.
+C
+C o Final measurements are to be made with all
+C WRITE statements and FORMAT sttements removed.
+C
+C**********************************************************************
+*/
+
+/* standard C library headers required */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+/* the following is optional depending on the timing function used */
+#include <time.h>
+
+/* map the FORTRAN math functions, etc. to the C versions */
+#define DSIN sin
+#define DCOS cos
+#define DATAN atan
+#define DLOG log
+#define DEXP exp
+#define DSQRT sqrt
+#define IF if
+
+/* function prototypes */
+void POUT(long N, long J, long K, double X1, double X2, double X3, double X4);
+void PA(double E[]);
+void P0(void);
+void P3(double X, double Y, double *Z);
+#define USAGE "usage: whetdc [-c] [loops]\n"
+
+/*
+ COMMON T,T1,T2,E1(4),J,K,L
+*/
+double T,T1,T2,E1[5];
+int J,K,L;
+
+int
+main(int argc, char *argv[])
+{
+ /* used in the FORTRAN version */
+ long I;
+ long N1, N2, N3, N4, N6, N7, N8, N9, N10, N11;
+ double X1,X2,X3,X4,X,Y,Z;
+ long LOOP;
+ int II, JJ;
+
+ /* added for this version */
+ long loopstart;
+ long startsec, finisec;
+ float KIPS;
+ int continuous;
+
+ loopstart = 1000; /* see the note about LOOP below */
+ continuous = 0;
+
+ II = 1; /* start at the first arg (temp use of II here) */
+ while (II < argc) {
+ if (strncmp(argv[II], "-c", 2) == 0 || argv[II][0] == 'c') {
+ continuous = 1;
+ } else if (atol(argv[II]) > 0) {
+ loopstart = atol(argv[II]);
+ } else {
+ fprintf(stderr, USAGE);
+ return(1);
+ }
+ II++;
+ }
+
+LCONT:
+/*
+C
+C Start benchmark timing at this point.
+C
+*/
+ startsec = time(0);
+
+/*
+C
+C The actual benchmark starts here.
+C
+*/
+ T = .499975;
+ T1 = 0.50025;
+ T2 = 2.0;
+/*
+C
+C With loopcount LOOP=10, one million Whetstone instructions
+C will be executed in EACH MAJOR LOOP..A MAJOR LOOP IS EXECUTED
+C 'II' TIMES TO INCREASE WALL-CLOCK TIMING ACCURACY.
+C
+ LOOP = 1000;
+*/
+ LOOP = loopstart;
+ II = 1;
+
+ JJ = 1;
+
+IILOOP:
+ N1 = 0;
+ N2 = 12 * LOOP;
+ N3 = 14 * LOOP;
+ N4 = 345 * LOOP;
+ N6 = 210 * LOOP;
+ N7 = 32 * LOOP;
+ N8 = 899 * LOOP;
+ N9 = 616 * LOOP;
+ N10 = 0;
+ N11 = 93 * LOOP;
+/*
+C
+C Module 1: Simple identifiers
+C
+*/
+ X1 = 1.0;
+ X2 = -1.0;
+ X3 = -1.0;
+ X4 = -1.0;
+
+ for (I = 1; I <= N1; I++) {
+ X1 = (X1 + X2 + X3 - X4) * T;
+ X2 = (X1 + X2 - X3 + X4) * T;
+ X3 = (X1 - X2 + X3 + X4) * T;
+ X4 = (-X1+ X2 + X3 + X4) * T;
+ }
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N1,N1,N1,X1,X2,X3,X4);
+#endif
+
+/*
+C
+C Module 2: Array elements
+C
+*/
+ E1[1] = 1.0;
+ E1[2] = -1.0;
+ E1[3] = -1.0;
+ E1[4] = -1.0;
+
+ for (I = 1; I <= N2; I++) {
+ E1[1] = ( E1[1] + E1[2] + E1[3] - E1[4]) * T;
+ E1[2] = ( E1[1] + E1[2] - E1[3] + E1[4]) * T;
+ E1[3] = ( E1[1] - E1[2] + E1[3] + E1[4]) * T;
+ E1[4] = (-E1[1] + E1[2] + E1[3] + E1[4]) * T;
+ }
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N2,N3,N2,E1[1],E1[2],E1[3],E1[4]);
+#endif
+
+/*
+C
+C Module 3: Array as parameter
+C
+*/
+ for (I = 1; I <= N3; I++)
+ PA(E1);
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N3,N2,N2,E1[1],E1[2],E1[3],E1[4]);
+#endif
+
+/*
+C
+C Module 4: Conditional jumps
+C
+*/
+ J = 1;
+ for (I = 1; I <= N4; I++) {
+ if (J == 1)
+ J = 2;
+ else
+ J = 3;
+
+ if (J > 2)
+ J = 0;
+ else
+ J = 1;
+
+ if (J < 1)
+ J = 1;
+ else
+ J = 0;
+ }
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N4,J,J,X1,X2,X3,X4);
+#endif
+
+/*
+C
+C Module 5: Omitted
+C Module 6: Integer arithmetic
+C
+*/
+
+ J = 1;
+ K = 2;
+ L = 3;
+
+ for (I = 1; I <= N6; I++) {
+ J = J * (K-J) * (L-K);
+ K = L * K - (L-J) * K;
+ L = (L-K) * (K+J);
+ E1[L-1] = J + K + L;
+ E1[K-1] = J * K * L;
+ }
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N6,J,K,E1[1],E1[2],E1[3],E1[4]);
+#endif
+
+/*
+C
+C Module 7: Trigonometric functions
+C
+*/
+ X = 0.5;
+ Y = 0.5;
+
+ for (I = 1; I <= N7; I++) {
+ X = T * DATAN(T2*DSIN(X)*DCOS(X)/(DCOS(X+Y)+DCOS(X-Y)-1.0));
+ Y = T * DATAN(T2*DSIN(Y)*DCOS(Y)/(DCOS(X+Y)+DCOS(X-Y)-1.0));
+ }
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N7,J,K,X,X,Y,Y);
+#endif
+
+/*
+C
+C Module 8: Procedure calls
+C
+*/
+ X = 1.0;
+ Y = 1.0;
+ Z = 1.0;
+
+ for (I = 1; I <= N8; I++)
+ P3(X,Y,&Z);
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N8,J,K,X,Y,Z,Z);
+#endif
+
+/*
+C
+C Module 9: Array references
+C
+*/
+ J = 1;
+ K = 2;
+ L = 3;
+ E1[1] = 1.0;
+ E1[2] = 2.0;
+ E1[3] = 3.0;
+
+ for (I = 1; I <= N9; I++)
+ P0();
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N9,J,K,E1[1],E1[2],E1[3],E1[4]);
+#endif
+
+/*
+C
+C Module 10: Integer arithmetic
+C
+*/
+ J = 2;
+ K = 3;
+
+ for (I = 1; I <= N10; I++) {
+ J = J + K;
+ K = J + K;
+ J = K - J;
+ K = K - J - J;
+ }
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N10,J,K,X1,X2,X3,X4);
+#endif
+
+/*
+C
+C Module 11: Standard functions
+C
+*/
+ X = 0.75;
+
+ for (I = 1; I <= N11; I++)
+ X = DSQRT(DEXP(DLOG(X)/T1));
+
+#ifdef PRINTOUT
+ IF (JJ==II)POUT(N11,J,K,X,X,X,X);
+#endif
+
+/*
+C
+C THIS IS THE END OF THE MAJOR LOOP.
+C
+*/
+ if (++JJ <= II)
+ goto IILOOP;
+
+/*
+C
+C Stop benchmark timing at this point.
+C
+*/
+ finisec = time(0);
+
+/*
+C----------------------------------------------------------------
+C Performance in Whetstone KIP's per second is given by
+C
+C (100*LOOP*II)/TIME
+C
+C where TIME is in seconds.
+C--------------------------------------------------------------------
+*/
+ printf("\n");
+ if (finisec-startsec <= 0) {
+ printf("Insufficient duration- Increase the LOOP count\n");
+ return(1);
+ }
+
+ printf("Loops: %ld, Iterations: %d, Duration: %ld sec.\n",
+ LOOP, II, finisec-startsec);
+
+ KIPS = (100.0*LOOP*II)/(float)(finisec-startsec);
+ if (KIPS >= 1000.0)
+ printf("C Converted Double Precision Whetstones: %.1f MIPS\n", KIPS/1000.0);
+ else
+ printf("C Converted Double Precision Whetstones: %.1f KIPS\n", KIPS);
+
+ if (continuous)
+ goto LCONT;
+
+ return(0);
+}
+
+void
+PA(double E[])
+{
+ J = 0;
+
+L10:
+ E[1] = ( E[1] + E[2] + E[3] - E[4]) * T;
+ E[2] = ( E[1] + E[2] - E[3] + E[4]) * T;
+ E[3] = ( E[1] - E[2] + E[3] + E[4]) * T;
+ E[4] = (-E[1] + E[2] + E[3] + E[4]) / T2;
+ J += 1;
+
+ if (J < 6)
+ goto L10;
+}
+
+void
+P0(void)
+{
+ E1[J] = E1[K];
+ E1[K] = E1[L];
+ E1[L] = E1[J];
+}
+
+void
+P3(double X, double Y, double *Z)
+{
+ double X1, Y1;
+
+ X1 = X;
+ Y1 = Y;
+ X1 = T * (X1 + Y1);
+ Y1 = T * (X1 + Y1);
+ *Z = (X1 + Y1) / T2;
+}
+
+#ifdef PRINTOUT
+void
+POUT(long N, long J, long K, double X1, double X2, double X3, double X4)
+{
+ printf("%7ld %7ld %7ld %12.4e %12.4e %12.4e %12.4e\n",
+ N, J, K, X1, X2, X3, X4);
+}
+#endif
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