I uploaded it to http://www.hotshare.net/file/131218-829472246c.html
I'm not sure if it's any good or even if it's 100% accurate; but if someone gets any use out of it, that would be good. Tim 2009/4/17 Jeff Squyres <jsquy...@cisco.com> > On Apr 16, 2009, at 11:38 AM, Timothy Hayes wrote: > > From what I understand MPI_Send will hit 3 separate layers of code before >> reaching the socket file descriptors you've found. The PML (Point to Point >> Messaging Layer) is a layer that bridges the MPI semantics from the >> underlying point to point communications. The standard PML implementation is >> called 'ob1' which is what indirectly calls the code you found. MPI_Send >> should go through pml_isend() or pml_send() which will request a BTL (Byte >> Transfer Layer) modules from the BML (BTL Management Layer) and invoke the >> BTL's btl_prepare_src() or btl_alloc() functions before calling the >> btl_send(). It becomes clearer when you step through it all with a debugger >> though ;-) >> >> If you're interested, I've recently implemented a BTL component of my own >> and am now writing up a report on the process. It will be ready next week, >> so if you think it might be useful, just let me know. >> > > Ooohh... that would be positively yummy! We can even host/link to that on > www.open-mpi.org. :-) > > -- > Jeff Squyres > Cisco Systems > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel > >
