[OMPI devel] Getting the number of nodes

[Nathan DeBardeleben]

I used to use this code to get the number of nodes in a cluster / 
machine / whatever:
int
get_num_nodes(void)
{
    int rc;
    size_t cnt;
    orte_gpr_value_t **values;
    
    rc = orte_gpr.get(ORTE_GPR_KEYS_OR|ORTE_GPR_TOKENS_OR,
                        ORTE_NODE_SEGMENT, NULL, NULL, &cnt, &values);
                        
    if(rc != ORTE_SUCCESS) {
        return 0;
    }
    
    return cnt;
}
This now returns '0' on my MAC when it used to return 1.  Is this not an 
acceptable way of doing this?  Is there a cleaner / better way these days?

--
-- Nathan
Correspondence
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Nathan DeBardeleben, Ph.D.
Los Alamos National Laboratory
Parallel Tools Team
High Performance Computing Environments
phone: 505-667-3428
email: ndeb...@lanl.gov
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