Learning Forum

[K]

I'm trying to write a UDF that loops over the compute nodes one by one using compute_node_loop.

I did a small test below on 4 cores, where I save the compute node number into each of the cells: cells in compute node 0 would have a UDM of 0, cells in compute node 1 would have a UDM of 1, and so on. However, when I plot the UDM, all the values in the entire domain are 3, rather than having values ranging from 0 to 3 between partitions.

#include "udf.h"

DEFINE_ON_DEMAND(my_on_demand_function)
{
    int pe;
    
    #if !RP_HOST

    compute_node_loop(pe)
    {
        Domain *domain;
        Thread *tc;
    
        cell_t c;

        domain = Get_Domain(ROOT_DOMAIN_ID);
        
        thread_loop_c(tc,domain)
        {
            begin_c_loop(c,tc)
            {
                C_UDMI(c,tc,0) = pe;
            }
            end_c_loop(c,tc)
        }
    }
    
    #endif
}

[Keyur Kanade]

As support we do not debug UDFs. But can provide help on particular syntex. Please check following link for details of UDF. Also if you have any subsequent questions, please post it on Ansys Forum Ansys Learning Forum under specific category.  

Chapter 1: Overview of User-Defined Functions (UDFs) (ansys.com)

Regards,

Keyur

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