Thanks for the pointer George ! On Sat, Sep 20, 2014 at 5:46 AM, George Bosilca <bosi...@icl.utk.edu> wrote:
> Or copy the handshake protocol design of the TCP BTL... > > the main difference between oob/tcp and btl/tcp is the way we resolve the situation in which two processes send their first message to each other at the same time. in oob/tcp, all (e.g. one or two) sockets are closed and the higher vpid is directed to retry establishing a connection. in btl/tcp, the useless socket is closed (e.g. the one that was connect-ed on the lower vpid and the one that was accept-ed on the higher vpid. my first impression is that oob/tcp is un-necessary complex and it should use the simpler and most efficient protocol of btl/tcp. that being said, this conclusion could be too naive and for some good reasons i ignore, the btl/tcp handshake protocol might not be a good fit for oob/tcp. any thoughts ? i will revamp oob/tcp in order to use the same btl/tcp handshake protocol from tomorrow unless indicated otherwise Cheers, Gilles
