From 50f10f120936a429dc450f58a40951fa5d59458a Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Sat, 23 Nov 2013 21:11:15 +0000
Subject: [PATCH] Somewhat evolved paralelism.
---
src/timestep.c | 94 ++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 80 insertions(+), 14 deletions(-)
diff --git a/src/timestep.c b/src/timestep.c
index 4c9fa67..30d6406 100644
--- a/src/timestep.c
+++ b/src/timestep.c
@@ -1,22 +1,48 @@
#include<stdlib.h>
#include<stdio.h>
#include<math.h>
+#include<pthread.h>
+#include<unistd.h> //usleep requires it
//#include "io.h"
#include "general.h"
#include "timestep.h"
#include "vertexmove.h"
#include "bondflip.h"
#include "frame.h"
+#include "vertex.h"
#include "io.h"
+
ts_bool run_simulation(ts_vesicle *vesicle, ts_uint mcsweeps, ts_uint inititer, ts_uint iterations){
- ts_uint i, j;
+ ts_uint i, j,k ;
centermass(vesicle);
cell_occupation(vesicle);
ts_fprintf(stdout, "Starting simulation (first %d x %d MC sweeps will not be recorded on disk)\n", inititer, mcsweeps);
- for(i=0;i<inititer+iterations;i++){
+ ts_fprintf(stdout, "Starting %d threads\n",vesicle->threads);
+
+ pthread_t *tid=(pthread_t *)malloc(sizeof(pthread_t)*vesicle->threads);
+ thdata *data=(thdata *)malloc(sizeof(thdata)*vesicle->threads);
+ pthread_mutex_t mutex_taint, mutex_untaint;
+ pthread_mutex_init(&mutex_taint,NULL);
+ pthread_mutex_init(&mutex_untaint,NULL);
+
+ for(i=0;i<vesicle->threads;i++){
+ data[i].thread_no=i;
+ data[i].vesicle=vesicle;
+ data[i].threads=vesicle->threads;
+ data[i].vtx_tainting_lock=&mutex_taint;
+ data[i].vtx_untainting_lock=&mutex_untaint;
+ }
+
+ for(i=0;i<inititer+iterations;i++){
for(j=0;j<mcsweeps;j++){
- single_timestep(vesicle);
+ for(k=0;k<vesicle->threads;k++){
+ pthread_create(&tid[k], NULL, single_timestep, (void *)&data[k]);
+ }
+ for(k=0;k<vesicle->threads;k++){
+ pthread_join(tid[k],NULL);
+ }
+ // single_timestep(vesicle);
}
centermass(vesicle);
cell_occupation(vesicle);
@@ -24,33 +50,73 @@
write_vertex_xml_file(vesicle,i-inititer);
}
}
+
+ pthread_mutex_destroy(&mutex_taint);
+ pthread_mutex_destroy(&mutex_untaint);
+ pthread_exit(NULL);
return TS_SUCCESS;
}
-ts_bool single_timestep(ts_vesicle *vesicle){
- ts_bool retval;
+void * single_timestep(void *thread_data){
+ thdata *data;
+ data=(thdata *)thread_data;
+ ts_vesicle *vesicle=data->vesicle;
+ ts_uint thID=data->thread_no;
+ ts_uint partition_size=(ts_uint)(vesicle->vlist->n/data->threads);
+ ts_uint end;
+ if(thID==data->threads-1){
+ end=vesicle->vlist->n;
+ } else {
+ end=(thID+1)*partition_size;
+ }
ts_double rnvec[3];
- ts_uint i;
- for(i=0;i<vesicle->vlist->n;i++){
+ ts_uint i,j; //b;
+// ts_fprintf(stdout,"Thread thID=%d report for duty. My vtxes are in range from %d to %d.\n",thID,thID*partition_size, end-1);
+ for(i=thID*partition_size;i<end;i++){
rnvec[0]=drand48();
rnvec[1]=drand48();
rnvec[2]=drand48();
- retval=single_verticle_timestep(vesicle,vesicle->vlist->vtx[i],rnvec);
+
+ /**** THREAD IS POTENTIALLY LOCKED ******/
+ pthread_mutex_lock(data->vtx_tainting_lock); //taint if no other process is tainting or wait until you can taint
+ // ts_fprintf(stdout, "thID=%d:: Tainting vertex %d, level=%d. Waiting....\n",thID, i, vesicle->vlist->vtx[i]->locked);
+
+ while(vertex_tainted(vesicle->vlist->vtx[i],1,1)){
+ ts_fprintf(stdout, "thID=%d:: Vertex %d is tainted, so I cannot try vertexmove. Level=%d. BU(H)TELJ!\n neigh. vtxs: ",thID, i, vesicle->vlist->vtx[i]->locked);
+ for(j=0; j<vesicle->vlist->vtx[i]->neigh_no; j++){
+ ts_fprintf(stdout, "%d ", vesicle->vlist->vtx[i]->neigh[j]->idx);
+ }
+ ts_fprintf(stdout, ".\n");
+ }
+ pthread_mutex_lock(data->vtx_untainting_lock);
+ vertex_taint(vesicle->vlist->vtx[i],2);
+ pthread_mutex_unlock(data->vtx_untainting_lock);
+
+ pthread_mutex_unlock(data->vtx_tainting_lock);
+ /**** THREAD IS RELEASING MUTEX RESOURCES ******/
+
+ single_verticle_timestep(vesicle,vesicle->vlist->vtx[i],rnvec);
+ pthread_mutex_lock(data->vtx_untainting_lock);
+ vertex_untaint(vesicle->vlist->vtx[i],2);
+ pthread_mutex_unlock(data->vtx_untainting_lock);
+// ts_fprintf(stdout, "Vertex %d should be untainted, level=%d.\n", i, vesicle->vlist->vtx[i]->locked);
}
// ts_int cnt=0;
- for(i=0;i<vesicle->blist->n;i++){
- rnvec[0]=drand48();
- rnvec[1]=drand48();
- rnvec[2]=drand48();
+/*
+ for(i=0;i<vesicle->vlist->n;i++){
+ b=rand() % vesicle->blist->n;
//find a bond and return a pointer to a bond...
//call single_bondflip_timestep...
- retval=single_bondflip_timestep(vesicle,vesicle->blist->bond[i],rnvec);
+ retval=single_bondflip_timestep(vesicle,vesicle->blist->bond[b],rnvec);
// if(retval==TS_SUCCESS) cnt++;
}
// printf("Bondflip success rate in one sweep: %d/%d=%e\n", cnt,vesicle->blist->n,(double)cnt/(double)vesicle->blist->n);
- if(retval);
+*/
+/* if(retval);
return TS_SUCCESS;
+*/
+ pthread_exit(0); /* exit */
}
--
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