staggering with PGV

git-svn-id: http://svn.cactuscode.org/arrangements/CactusPUGH/PUGH/trunk@186 b61c5cb5-eaca-4651-9a7a-d64986f99364

1 files changed, 48 insertions, 89 deletions

diff --git a/src/SetupPGV.c b/src/SetupPGV.c
index b77bdd2..1ddca74 100644
--- a/src/SetupPGV.c
+++ b/src/SetupPGV.c
@@ -159,6 +159,8 @@ pGExtras *pugh_SetupPGExtras(int dim,
                                  total_procs, nprocs, this_proc,this);
       pugh_SetupPGExtrasOwnership(dim, perme, stagger, sh, nghosts, 
                                  total_procs, nprocs, this_proc, this);
+      pugh_SetupPGExtrasStaggering(dim, perme, stagger, sh, nghosts, 
+                                 total_procs, nprocs, this_proc, this);
     }      
 
   }
@@ -1051,111 +1053,68 @@ int pugh_SetupPGExtrasOwnership(int dim,
 
   }
 
-  /* if staggering, set up ownership, overlaps, ghosts */
-  if(stagger == PUGH_STAGGER) 
+  return 0;
+}
+
+int pugh_SetupPGExtrasStaggering(int dim, 
+				 int *perme, 
+				 int stagger, 
+				 int *sh, 
+				 int *nghosts, 
+				 int total_procs, 
+				 int *nprocs, 
+				 int this_proc, 
+				 pGExtras *this)
+{
+  int s,d,k,dir;
+  int *upperbnd;
+
+  upperbnd = (int*) malloc(dim*sizeof(int));
+  
+
+  for (d=0;d<dim;d++)
+  {
+    upperbnd[d] = (this->ub[this_proc][d] == this->nsize[d]-1) ? 1 : 0;
+  }
+ 
+  /* copy ownership/ghost/overlap from the default PUGH_VERTEXCTR */
+  for(s=1;s<PUGH_NSTAGGER;s++)
   {
-    /* copy ownership from PUGH_VERTEXCTR */
-    for(i = 1; i < PUGH_NSTAGGER; i++)
+    for(d=0;d<dim;d++)
     {
-      for(j = 0; j < dim; j++)
+      for(k=0;k<2;k++)
       {
-        for(k = 0; k < 2; k++)
-        {
-          this->ownership[i][k][j] = this->ownership[PUGH_VERTEXCTR][k][j];
-        }
-      }
-    }
-
-    /* correct ownership for staggered grids */
-    for(i = 0; i < PUGH_NSTAGGER; i++)
-    {
-      for (idir = 0; idir < dim; idir++)
-      { 
-        if(this->ub[this_proc][idir] != this->nsize[idir]-1)
-        {
-          this->ownership[i][1][idir] --;
-        }
-        else
+        this->ownership[s][k][d]    = this->ownership[0][k][d];
+        for (dir=0;dir<2*dim;dir++)
         {
-          if(i == PUGH_FACECTR(idir))
-          {
-            this->ownership[i][1][idir] --;
-          }
+          this->overlap[s][k][dir][d] = this->overlap[0][k][dir][d];
+          this->ghosts [s][k][dir][d] = this->ghosts [0][k][dir][d]; 
         }
       }
-    }
-
-    /* set overlaps for staggered grids */
-    for(staglcv = 0; staglcv < PUGH_NSTAGGER; staglcv++)
-    {
-      for(dir = 0; dir < 2*dim; dir++)
+      
+      /* decrease ownership at upper bound */
+      if(upperbnd[d]) 
       {
-        for (idir = 0; idir < dim; idir++)
-        {
-          istart = 0;  
-          iend   = this->lnsize[idir];
-          if(staglcv == PUGH_FACECTR(idir))
-          {
-            iend --;
-          }
-          if(dir == 2*idir)
-          {
-            istart =     this->nghostzones[idir];
-            iend   = 2 * this->nghostzones[idir];
-            if(staglcv != PUGH_FACECTR(idir))
-            {
-              istart ++;
-              iend ++;
-            }
-          }
-          if(dir == 2*idir+1)
-          {
-            istart = this->lnsize[idir] - 2 * this->nghostzones[idir] -1;
-            iend   = istart                 + this->nghostzones[idir];
-          }
-          
-          this->overlap[staglcv][0][dir][idir] = istart;
-          this->overlap[staglcv][1][dir][idir] = iend;
-        }
+        this->ownership[s][1][d] --;
       }
     }
-       
-    /* set ghosts for staggered grids */
-    for(staglcv = 0; staglcv < PUGH_NSTAGGER; staglcv++)
+
+    /* correct overlaps */
+    for(dir=0;dir<2*dim;dir++)
     {
-      for(dir = 0; dir < 2*dim; dir++)
+      for (d=0;d<dim;d++)
       {
-        for(idir=0;idir<dim;idir++)
+        /* if we are at a upper physical bnd && at a upperface (1,3,5) 
+           && we are in the dir direction decrease by one */
+        if((upperbnd[d])&&((dir+1)%2==0)&&(dir==2*d+1))
         {
-          istart = 0;  
-          iend   = this->lnsize[idir];
-          if(staglcv == PUGH_FACECTR(idir))
-          {
-            iend --;
-          }
-          if(dir == 2*idir)
-          {
-            istart = 0;
-            iend   = this->nghostzones[idir];
-          }
-          if(dir == 2*idir+1)
-          {
-            istart = this->lnsize[idir] - this->nghostzones[idir];
-            iend   = this->lnsize[idir];
-            if(staglcv == PUGH_FACECTR(idir))
-            {
-              istart --;
-              iend --;
-            }
-          }
-          this->ghosts[staglcv][0][dir][idir] = istart;
-          this->ghosts[staglcv][1][dir][idir] = iend;
+          this->overlap[s][0][dir][d]--;
+          this->overlap[s][1][dir][d]--;
         }
       }
     }
   }
-
-  return 0;
+  return(0);
 }
 
  /*@@