Hello All,<br><br> I am working with MPICH-G2.<br> I came to know (from mailing search) that while MPI_Init is called , the initialization is being done.<br> All-to-all exchange of host+port details is done.<br>
<br>My doubt is :<br><br> How the initial communication is established in order to exchange the hostname+ port number details ?<br> How is the hostname+port number details sent and received ? what are the destination IPs these packets?<br>
<br> How is all-to-all communication is done? On which ports this will be done ?<br> Only after the exchange , each process can communicate with other.<br><br> Thanks for any clarifications. <br>-- <br>Regards,<br>Ravi.Thati