source: soft/giet_vm/applications/ocean/linkup.c

/*************************************************************************/
/*                                                                       */
/*  Copyright (c) 1994 Stanford University                               */
/*                                                                       */
/*  All rights reserved.                                                 */
/*                                                                       */
/*  Permission is given to use, copy, and modify this software for any   */
/*  non-commercial purpose as long as this copyright notice is not       */
/*  removed.  All other uses, including redistribution in whole or in    */
/*  part, are forbidden without prior written permission.                */
/*                                                                       */
/*  This software is provided with absolutely no warranty and no         */
/*  support.                                                             */
/*                                                                       */
/*************************************************************************/

/* Set all the pointers to the proper locations for the q_multi and
   rhs_multi data structures */

#include "decs.h"

///////////////
void link_all()
{
    long i;
    long j;

    for (j = 0; j < nprocs; j++) 
    {
        linkup(psium[j]);
        linkup(psilm[j]);
        linkup(psib[j]);
        linkup(ga[j]);
        linkup(gb[j]);
        linkup(work2[j]);
        linkup(work3[j]);
        linkup(work6[j]);
        linkup(tauz[j]);
        linkup(oldga[j]);
        linkup(oldgb[j]);
        for (i = 0; i <= 1; i++) 
        {
            linkup(psi[j][i]);
            linkup(psim[j][i]);
            linkup(work1[j][i]);
            linkup(work4[j][i]);
            linkup(work5[j][i]);
            linkup(work7[j][i]);
            linkup(temparray[j][i]);
        }
    }
    link_multi();
}

/////////////////////////////
void linkup(double **row_ptr)
{
    long i;
    double *a;
    double **row;
    double **y;
    long x_part;
    long y_part;

    x_part = (jm - 2) / xprocs + 2;
    y_part = (im - 2) / yprocs + 2;
    row = row_ptr;
    y = row + y_part;
    a = (double *) y;
    for (i = 0; i < y_part; i++) 
    {
        *row = (double *) a;
        row++;
        a += x_part;
    }
}

//////////////////
void link_multi()
{
    long i;
    long j;
    long l;
    double *a;
    double **row;
    double **y;
    unsigned long z;
    unsigned long zz;
    long x_part;
    long y_part;
    unsigned long d_size;

    z = ((unsigned long) q_multi + nprocs * sizeof(double ***));

    if (nprocs % 2 == 1) {      /* To make sure that the actual data
                                   starts double word aligned, add an extra
                                   pointer */
        z += sizeof(double ***);
    }

    d_size = numlev * sizeof(double **);
    if (numlev % 2 == 1) {      /* To make sure that the actual data
                                   starts double word aligned, add an extra
                                   pointer */
        d_size += sizeof(double **);
    }
    for (i = 0; i < numlev; i++) {
        d_size += ((imx[i] - 2) / yprocs + 2) * ((jmx[i] - 2) / xprocs + 2) * sizeof(double) + ((imx[i] - 2) / yprocs + 2) * sizeof(double *);
    }
    for (i = 0; i < nprocs; i++) {
        q_multi[i] = (double ***) z;
        z += d_size;
    }
    for (j = 0; j < nprocs; j++) {
        zz = (unsigned long) q_multi[j];
        zz += numlev * sizeof(double **);
        if (numlev % 2 == 1) {  /* To make sure that the actual data
                                   starts double word aligned, add an extra
                                   pointer */
            zz += sizeof(double **);
        }
        for (i = 0; i < numlev; i++) {
            d_size = ((imx[i] - 2) / yprocs + 2) * ((jmx[i] - 2) / xprocs + 2) * sizeof(double) + ((imx[i] - 2) / yprocs + 2) * sizeof(double *);
            q_multi[j][i] = (double **) zz;
            zz += d_size;
        }
    }

    for (l = 0; l < numlev; l++) {
        x_part = (jmx[l] - 2) / xprocs + 2;
        y_part = (imx[l] - 2) / yprocs + 2;
        for (j = 0; j < nprocs; j++) {
            row = q_multi[j][l];
            y = row + y_part;
            a = (double *) y;
            for (i = 0; i < y_part; i++) {
                *row = (double *) a;
                row++;
                a += x_part;
            }
        }
    }

    z = ((unsigned long) rhs_multi + nprocs * sizeof(double ***));
    if (nprocs % 2 == 1) {      /* To make sure that the actual data
                                   starts double word aligned, add an extra
                                   pointer */
        z += sizeof(double ***);
    }

    d_size = numlev * sizeof(double **);
    if (numlev % 2 == 1) {      /* To make sure that the actual data
                                   starts double word aligned, add an extra
                                   pointer */
        d_size += sizeof(double **);
    }
    for (i = 0; i < numlev; i++) {
        d_size += ((imx[i] - 2) / yprocs + 2) * ((jmx[i] - 2) / xprocs + 2) * sizeof(double) + ((imx[i] - 2) / yprocs + 2) * sizeof(double *);
    }
    for (i = 0; i < nprocs; i++) {
        rhs_multi[i] = (double ***) z;
        z += d_size;
    }
    for (j = 0; j < nprocs; j++) {
        zz = (unsigned long) rhs_multi[j];
        zz += numlev * sizeof(double **);
        if (numlev % 2 == 1) {  /* To make sure that the actual data
                                   starts double word aligned, add an extra
                                   pointer */
            zz += sizeof(double **);
        }
        for (i = 0; i < numlev; i++) {
            d_size = ((imx[i] - 2) / yprocs + 2) * ((jmx[i] - 2) / xprocs + 2) * sizeof(double) + ((imx[i] - 2) / yprocs + 2) * sizeof(double *);
            rhs_multi[j][i] = (double **) zz;
            zz += d_size;
        }
    }

    for (l = 0; l < numlev; l++) 
    {
        x_part = (jmx[l] - 2) / xprocs + 2;
        y_part = (imx[l] - 2) / yprocs + 2;
        for (j = 0; j < nprocs; j++) 
        {
            row = rhs_multi[j][l];
            y = row + y_part;
            a = (double *) y;
            for (i = 0; i < y_part; i++) 
            {
                *row = (double *) a;
                row++;
                a += x_part;
            }
        }
    }
}