Hello,

I have a proprietary transport/messaging layer that sits below an MTL component. This transport layer requires OpenMPI to assign it a rank that is unique and specific to that process and will not change from execution to termination. In a way, I am trying to find a one-one correspondence between a process's universal rank in OpenMPI and this transport layer. I began looking at ompi_proc_t from different processes and seemingly found a unique identifier, proc_name.vpid. Consequently, I assigned the ranks to each process in my transport layer based on the value of the local vpid of each process.
I have not tested this thoroughly, but it has been working so far. Although, I would like to make sure that this is a good approach, or know, at least, whether if there are other ways to do this. I would appreciate it if you could leave me feedback or give suggestions on how to assign universal ranks to a proprietary transport software.

Thanks for your help,

Sajjad Tabib