CFD Online Discussion Forums - Error at host: floating point exception

Hi,
i have a problem when I run an UDF in paralell and write data to a file, here is the code:

Code:

DEFINE_EXECUTE_AT_END(execute_at_end)

{



#if !RP_HOST

    /* cell_t c; */

    face_t face;

    Thread *t;

    Domain *d;



    real position[ND_ND];

    real Avec[ND_ND];

    float x, y, z;

    float temp;

#else

    int i;

#endif



#if PARALLEL



    int size;  /* data passing variables */

    real *array;

    int pe;

#endif



#if !RP_NODE /* SERIAL or HOST */

        

        FILE *f_file;

        char filename[32];

        int i_curr_ts;



        snprintf(filename, sizeof(char) * 32, "ts_%d.txt", i_curr_ts);



        if ((f_file = fopen(filename, "w"))==NULL)

          Message("\n Warning: Unable to open %s for writing\n",filename);

        else

          Message("\nWriting Pressure to %s...\n",filename);



#endif





    i_curr_ts =i_curr_ts+1;





    if(time_ges>=30)

      {





#if RP_NODE /* This is now for parallel */



        d = Get_Domain(1);

        t = Lookup_Thread(d, 11);



        size=THREAD_N_ELEMENTS_INT(t);

        array = (real *)malloc(7 * size * sizeof(real)); /* 7 rows */



        begin_f_loop(face, t)

          {

            F_CENTROID(position, face, t);

        F_AREA(Avec, face, t);

            /* vol = C_VOLUME(c,t); */



            temp = F_T(face, t);



            x = position[0];

            y = position[1];

            z = position[2];



        array[face]= x;

        array[face+size]= y;

        array[face+size*2]= z;

        array[face+size*3]= temp;

        array[face+size*4]= Avec[0];

        array[face+size*5]= Avec[1];

        array[face+size*6]= Avec[2];



          }

        end_f_loop(face, t)



          pe = (I_AM_NODE_ZERO_P) ? node_host : node_zero;







        PRF_CSEND_INT(pe, &size, 1, myid);



        free(array);/* free array on nodes once data sent */



        if (I_AM_NODE_ZERO_P)

          compute_node_loop_not_zero (pe)

          {

            PRF_CRECV_INT(pe, &size, 1, pe);

        Message("aaaaaaaaaaaaaaaa %d\n",size);



          }

#endif /* RP_NODE */

        

        

      }

}

The problem is in the passing function of the variable size but I have no idea why it crashes. Any ideas?