~vcs-imports-ii/gnubg/trunk

/*

 * speed.c

 *

 * by Gary Wong <gtw@gnu.org>, 2003

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of version 3 or later of the GNU General Public License as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * $Id: speed.c,v 1.34 2017/06/27 19:34:18 plm Exp $

 */

#include "config.h"

#if defined(USE_GTK)

#include "gtkgame.h"

#else

#include "backgammon.h"

#endif

#if defined(USE_MULTITHREAD)

#include "multithread.h"

#endif

#ifndef WIN32

#include <stdlib.h>

#endif

#include "lib/isaac.h"

#include "lib/simd.h"

#define EVALS_PER_ITERATION 1024

static randctx rc;

static double timeTaken;

static void

RunEvals(void *UNUSED(notused))

{

    int aanBoard[EVALS_PER_ITERATION][2][25];

    int i, j, k;

    double t;

    SSE_ALIGN(float ar[NUM_OUTPUTS]);

#if defined(USE_MULTITHREAD)

    MT_Exclusive();

#endif

    for (i = 0; i < EVALS_PER_ITERATION; i++) {

        /* Generate a random board.  Don't allow chequers on the bar

         * or borne off, so we can trivially guarantee the position

         * is legal. */

        for (j = 0; j < 25; j++)

            aanBoard[i][0][j] = aanBoard[i][1][j] = 0;

        for (j = 0; j < 15; j++) {

            do {

                k = irand(&rc) % 24;

            } while (aanBoard[i][1][23 - k]);

            aanBoard[i][0][k]++;

            do {

                k = irand(&rc) % 24;

            } while (aanBoard[i][0][23 - k]);

            aanBoard[i][1][k]++;

        }

    }

#if defined(USE_MULTITHREAD)

    MT_Release();

    MT_SyncStart();

#else

    t = get_time();

#endif

    for (i = 0; i < EVALS_PER_ITERATION; i++) {

        (void) EvaluatePosition(NULL, (ConstTanBoard) aanBoard[i], ar, &ciCubeless, NULL);

    }

#if defined(USE_MULTITHREAD)

    if ((t = MT_SyncEnd()) != 0)

        timeTaken += t;

#else

    timeTaken += (get_time() - t);

#endif

}

extern void

CommandCalibrate(char *sz)

{

    int n = -1;

    unsigned int i, iIter, iCacheSize;

#if defined(USE_GTK)

    void *pcc = NULL;

#endif

    iCacheSize = GetEvalCacheEntries();

    EvalCacheResize(0);

#if defined(USE_MULTITHREAD)

    MT_SyncInit();

#endif

    if (sz && *sz) {

        n = ParseNumber(&sz);

        if (n < 1) {

            outputl(_("If you specify a parameter to `calibrate', " "it must be a number of iterations to run."));

            return;

        }

    }

    if (clock() == (clock_t) - 1) {

        outputl(_("Calibration not available."));

        return;

    }

    rc.randrsl[0] = (ub4) time(NULL);

    for (i = 0; i < RANDSIZ; i++)

        rc.randrsl[i] = rc.randrsl[0];

    irandinit(&rc, TRUE);

#if defined(USE_GTK)

    if (fX)

        pcc = GTKCalibrationStart();

#endif

    timeTaken = 0.0;

    for (iIter = 0; n < 0 || iIter < (unsigned int) n;) {

        double spd;

        if (fInterrupt)

            break;

#if defined(USE_MULTITHREAD)

        mt_add_tasks(MT_GetNumThreads(), RunEvals, NULL, NULL);

        (void) MT_WaitForTasks(NULL, 0, FALSE);

        iIter += MT_GetNumThreads();

#else

        RunEvals(NULL);

        iIter++;

#endif

        if (timeTaken <= 0.0)

            spd = 0.0;

        else

            spd = iIter * (EVALS_PER_ITERATION * 1000 / timeTaken);

#if defined(USE_GTK)

        if (fX)

            GTKCalibrationUpdate(pcc, (float) spd);

        else

#endif

        if (fShowProgress) {

            outputf("        \rCalibrating: %.0f static evaluations/second", spd);

            fflush(stdout);

        }

    }

    EvalCacheResize(iCacheSize);

#if defined(USE_GTK)

    if (fX)

        GTKCalibrationEnd(pcc);

#endif

    if (timeTaken > 0.0) {

        rEvalsPerSec = iIter * (float) (EVALS_PER_ITERATION * 1000 / timeTaken);

        outputf("\rCalibration result: %.0f static evaluations/second.\n", rEvalsPerSec);

    } else

        outputl(_("Calibration incomplete."));

}