1 /* CalculiX - A 3-dimensional finite element program */
2 /* Copyright (C) 1998-2021 Guido Dhondt */
3
4 /* This program is free software; you can redistribute it and/or */
5 /* modify it under the terms of the GNU General Public License as */
6 /* published by the Free Software Foundation(version 2); */
7 /* */
8
9 /* This program is distributed in the hope that it will be useful, */
10 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
11 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
12 /* GNU General Public License for more details. */
13
14 /* You should have received a copy of the GNU General Public License */
15 /* along with this program; if not, write to the Free Software */
16 /* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
17
18 #include <unistd.h>
19 #include <stdio.h>
20 #include <math.h>
21 #include <stdlib.h>
22 #include <pthread.h>
23 #include "CalculiX.h"
24
25 static ITG *nface1,*ielfa1,*ipnei1,*nef1,*num_cpus1;
26
27 static double *vel1,*gradtel1,*gamma1,*xlet1,*xxj1,*betam1,
28 *flux1;
29
calcgammatmain(ITG * nface,ITG * ielfa,double * vel,double * gradtel,double * gamma,double * xlet,double * xxj,ITG * ipnei,double * betam,ITG * nef,double * flux,ITG * num_cpus)30 void calcgammatmain(ITG *nface,ITG *ielfa,double *vel,double *gradtel,
31 double *gamma,double *xlet,double *xxj,
32 ITG *ipnei,double *betam,ITG *nef,double *flux,
33 ITG *num_cpus){
34
35 ITG i;
36
37 /* variables for multithreading procedure */
38
39 ITG *ithread=NULL;;
40
41 pthread_t tid[*num_cpus];
42
43 /* calculation of the density at the cell centers */
44
45 ielfa1=ielfa;vel1=vel;gradtel1=gradtel;gamma1=gamma;xlet1=xlet;
46 xxj1=xxj;ipnei1=ipnei;betam1=betam;nef1=nef;flux1=flux;
47 num_cpus1=num_cpus;nface1=nface;
48
49 /* create threads and wait */
50
51 NNEW(ithread,ITG,*num_cpus);
52 for(i=0; i<*num_cpus; i++) {
53 ithread[i]=i;
54 pthread_create(&tid[i], NULL, (void *)calcgammat1mt, (void *)&ithread[i]);
55 }
56 for(i=0; i<*num_cpus; i++) pthread_join(tid[i], NULL);
57
58 SFREE(ithread);
59
60 return;
61
62 }
63
64 /* subroutine for multithreading of calcgammat1 */
65
calcgammat1mt(ITG * i)66 void *calcgammat1mt(ITG *i){
67
68 ITG nfacea,nfaceb,nfacedelta;
69
70 nfacedelta=(ITG)floor(*nface1/(double)(*num_cpus1));
71 nfacea=*i*nfacedelta+1;
72 nfaceb=(*i+1)*nfacedelta;
73 if((*i==*num_cpus1-1)&&(nfaceb<*nface1)) nfaceb=*nface1;
74
75 FORTRAN(calcgammat,(ielfa1,vel1,gradtel1,gamma1,xlet1,xxj1,
76 ipnei1,betam1,nef1,flux1,&nfacea,&nfaceb));
77
78 return NULL;
79 }
80