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/* XXX cleanup the include files ! */
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
#include "util_ErrorCodes.h"
#include "util_Table.h"
static const char * rcsid = "$Header$";
CCTK_FILEVERSION(Norms_Compute_Norm_c);
void Norms_Compute_Norms (CCTK_ARGUMENTS)
{
DECLARE_CCTK_ARGUMENTS;
DECLARE_CCTK_PARAMETERS;
int vind; /* variable index */
CCTK_REAL *data;
int index,indexp, i,j,k;
int ierr;
int istart, iend, jstart, jend, kstart, kend;
int npoints;
CCTK_REAL hd, dx,dy,dz;
CCTK_REAL deriv;
int target_proc,reduction_handle;
CCTK_REAL result;
if (verbose>1)
CCTK_INFO("computing norms");
*norm=0.;
result=0.;
dx = CCTK_DELTA_SPACE(0);
dy = CCTK_DELTA_SPACE(1);
dz = CCTK_DELTA_SPACE(2);
/* XXX ghost size */
istart = 1;
jstart = 1;
kstart = 1;
iend = cctk_lsh[0]-1;
jend = cctk_lsh[1]-1;
kend = cctk_lsh[2]-1;
for (k=kstart;k<kend;k++) {
for (j=jstart;j<jend;j++) {
for (i=istart;i<iend;i++) {
index=CCTK_GFINDEX3D(cctkGH,i,j,k);
diff_term[index]=0.;
}
}
}
target_proc = 0;
reduction_handle = CCTK_ReductionArrayHandle("norm2");
if (reduction_handle < 0)
CCTK_VWarn(0, __LINE__, __FILE__, CCTK_THORNSTRING,
"can't get sum-reduction handle!");
if (verbose>2)
fprintf(stderr," nr1stvars %d nr2ndvars %d\n",
*nr1stvars,*nr2ndvars);
/* L2-norm of 1st order variables */
for (vind=0; vind< *nr1stvars; vind++) {
ierr=CCTK_Reduce(cctkGH,target_proc,reduction_handle,1,
CCTK_VARIABLE_REAL,&result,1,varindices_1st[vind]);
if (ierr<0)
CCTK_WARN(1,"reduction failed");
if (verbose>4) {
fprintf(stderr," vind=%d vi=%d var=%s result=%1.8g\n",
vind,varindices_1st[vind],
CCTK_VarName(varindices_1st[vind]),result);
}
result=result-bgvals_1st[vind];
*norm=*norm+result*result;
}
if (verbose>2)
fprintf(stderr," after 1st order vars norm=%16.8g\n",*norm);
/* L2-norm of 2nd order variables */
for (vind=0; vind< *nr2ndvars; vind++) {
ierr=CCTK_Reduce(cctkGH,target_proc,reduction_handle,1,
CCTK_VARIABLE_REAL,&result,1,varindices_2nd[vind]);
if (ierr<0)
CCTK_WARN(1,"reduction failed");
if (verbose>4) {
fprintf(stderr," vind=%d vi=%d var=%s result=%1.8g\n",
vind,varindices_2nd[vind],
CCTK_VarName(varindices_2nd[vind]),result);
}
result=result-bgvals_2nd[vind];
*norm=*norm+result*result;
}
if (verbose>2)
fprintf(stderr," after 2nd order vars norm=%16.8g\n",*norm);
/* L2-norm of D_{+i} terms */
/* d_x */
for (vind=0; vind< *nr2ndvars; vind++) {
data=CCTK_VarDataPtrI(cctkGH,0,varindices_2nd[vind]);
for (k=kstart;k<kend;k++) {
for (j=jstart;j<jend;j++) {
for (i=istart;i<iend;i++) {
index =CCTK_GFINDEX3D(cctkGH,i,j,k);
indexp=CCTK_GFINDEX3D(cctkGH,i+1,j,k);
diff_term[index]=(data[indexp]-data[index])/dx;
}
}
}
ierr=CCTK_Reduce(cctkGH,target_proc,reduction_handle,1,
CCTK_VARIABLE_REAL,&result,1,
CCTK_VarIndex("norms::diff_term"));
if (ierr<0)
CCTK_WARN(1,"reduction failed");
if (verbose>4) {
fprintf(stderr," vind=%d vi=%d var=%s result=%1.8g\n",
vind,varindices_2nd[vind],
CCTK_VarName(varindices_2nd[vind]),result);
}
*norm=*norm+result*result;
}
if (verbose>2)
fprintf(stderr," after dx 2nd order terms norm=%16.8g\n",*norm);
/* d_y */
for (vind=0; vind< *nr2ndvars; vind++) {
data=CCTK_VarDataPtrI(cctkGH,0,varindices_2nd[vind]);
for (k=kstart;k<kend;k++) {
for (j=jstart;j<jend;j++) {
for (i=istart;i<iend;i++) {
index =CCTK_GFINDEX3D(cctkGH,i,j,k);
indexp=CCTK_GFINDEX3D(cctkGH,i,j+1,k);
diff_term[index]=(data[indexp]-data[index])/dy;
}
}
}
ierr=CCTK_Reduce(cctkGH,target_proc,reduction_handle,1,
CCTK_VARIABLE_REAL,&result,1,
CCTK_VarIndex("norms::diff_term"));
if (ierr<0)
CCTK_WARN(1,"reduction failed");
if (verbose>4) {
fprintf(stderr," vind=%d vi=%d var=%s result=%1.8g\n",
vind,varindices_2nd[vind],
CCTK_VarName(varindices_2nd[vind]),result);
}
*norm=*norm+result*result;
}
if (verbose>2)
fprintf(stderr," after dy 2nd order terms norm=%16.8g\n",*norm);
/* d_z */
for (vind=0; vind< *nr2ndvars; vind++) {
data=CCTK_VarDataPtrI(cctkGH,0,varindices_2nd[vind]);
for (k=kstart;k<kend;k++) {
for (j=jstart;j<jend;j++) {
for (i=istart;i<iend;i++) {
index =CCTK_GFINDEX3D(cctkGH,i,j,k);
indexp=CCTK_GFINDEX3D(cctkGH,i,j,k+1);
diff_term[index]=(data[indexp]-data[index])/dz;
}
}
}
ierr=CCTK_Reduce(cctkGH,target_proc,reduction_handle,1,
CCTK_VARIABLE_REAL,&result,1,
CCTK_VarIndex("norms::diff_term"));
if (ierr<0)
CCTK_WARN(1,"reduction failed");
if (verbose>4) {
fprintf(stderr," vind=%d vi=%d var=%s result=%1.8g\n",
vind,varindices_2nd[vind],
CCTK_VarName(varindices_2nd[vind]),result);
}
*norm=*norm+result*result;
}
if (verbose>2)
fprintf(stderr," after dz 2nd order terms norm=%16.8g\n",*norm);
if (verbose>2)
fprintf(stderr," after 2nd order vars (incl. D_{+i}): norm=%16.8g\n",
*norm);
if (verbose>2)
fprintf(stderr,"final norm^2=%16.8g on this CPU\n",*norm);
*norm=sqrt(*norm);
if (verbose>1)
CCTK_VInfo(CCTK_THORNSTRING,"norm= %16.8g",*norm);
}
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