[Saidul]

Hello All,
I Compile my UDF without any error or warning and run the simulations but it stopped the simulations with a fatal signal(Image attached). How can I fix the problem ? Looking for help badly.....
/************************************************** ************************************/
/* UDF for computing cell co-ordinates */
/************************************************** ************************************/

#include "udf.h"
#include "sg.h"
#include "dpm.h"
#define WALL_ID 8

DEFINE_DPM_SCALAR_UPDATE(particle_coords, c, ct, initialize, p)
{
real A[ND_ND];
int n;
face_t f;
Thread *ft;
c_face_loop(c, ct, n)
{
f=C_FACE(c, ct,n);
ft=C_FACE_THREAD(c, ct, n);
if (NNULLP(ft))
{
if (THREAD_ID(ft)== WALL_ID)
{
p->user[0] = p->state.pos[0];
p->user[1] = p->state.pos[1];
p->user[2] = p->state.pos[2];

}
}

}
}

DEFINE_DPM_OUTPUT(Particle_coords_output, header, fp, p, thread, plane)
{
char name[10];
if (header)
{
if (NNULLP(thread))
par_fprintf_head(fp,"(%s %d)\n", thread->head->dpm_summary.sort_file_name,3);
else
par_fprintf_head(fp,"(%s %d)\n", plane->sort_file_name,3);

par_fprintf_head(fp,"(%10s %10s %10s)\n","X", "Y", "Z");
}
else
{
sprintf(name,"%s:%d", p->injection->name,p->part_id);
par_fprintf(fp,"(%10.6g %10.6g %10.6g)\n", p->user[0], p->user[1], p->user[2]);
}
}

Thanks in advance. Looking for your help. My model is 3ddp, serial, laminar flow, My platform windows 7,64 bit, Microsoft visual studio 5, 10 and microsoft windows SDK v7.o.

Saeed

[pakk]

You can find the problem by standard debugging methods. Comment out some of the code, see if you still get an error; if you don't get an error then look more closely at the parts you commented out, otherwise try other parts.

[Saidul]

Originally Posted by pakk

You can find the problem by standard debugging methods. Comment out some of the code, see if you still get an error; if you don't get an error then look more closely at the parts you commented out, otherwise try other parts.

I checked my UDF and if I remove /*if (NNULLP(ft)) line, then it works without any fatal error. It also generate a output file with no data. Maybe there is a memory problem. There is no memory allocated and if
NNULLP is not present runs but do not prints, because it was not stored. How can I solve the problem. I am badly looking for some help.

DEFINE_DPM_SCALAR_UPDATE(particle_coords, c, ct, initialize, p)
{
real A[ND_ND];
int n;
face_t f;
Thread *ft;
c_face_loop(c, ct, n)
/*{*/
ft=C_FACE_THREAD(c, ct, n);
/*if (NNULLP(ft))
{*/
if (THREAD_ID(ft)== WALL_ID)
{
p->user[0] = p->state.pos[0];
p->user[1] = p->state.pos[1];
p->user[2] = p->state.pos[2];

}
/* }

}*/