On Fri, Apr 18, 2008 at 08:04:17AM -0400, Tim Prins wrote: > Hi Adrian,
Hi! > After this change, I am getting a lot of errors of the form: > [sif2][[12854,1],9][btl_tcp_frag.c:216:mca_btl_tcp_frag_recv] > mca_btl_tcp_frag_recv: readv failed: Connection reset by > peer (104) > > See for instance: http://www.open-mpi.org/mtt/index.php?do_redir=615 That's weird. I've tried hello_c.c on about ten machines with different network configurations, none of them showed any problems at all. Do you have a very special setup? And if need be, would it be possible to debug on your machine? >From all MTT sites, this error only occurs on Odin and Sif. What's so special with these clusters? > I have found this especially easy to reproduce if I run 16 processes all > with just the tcp and self btls on the same machine, running the > 'hello_c' program in the examples directory. Unfortunately, I can't reproduce it that way. If this is related to the change, then it would mean that mca_btl_tcp_proc_accept() returns false, either after the large loop or in mca_btl_tcp_endpoint_accept(). Do you have the cycles to add some BTL_VERBOSE-lines to see where things go wrong? Or even to step through with the debugger? If you want me to do it, I would provide you with my ssh key? Cheerio -- mail: a...@thur.de http://adi.thur.de PGP/GPG: key via keyserver Das Sterben wird nur halb so schlimm, rauchst du KIM.
