On Mar 21, 2013, at 9:52 PM, David A. Boger wrote:
> If I add "-mca oob_tcp_if_exclude cscotun0", then the corresponding address
> for that vpn interface no longer shows up in contact.txt, but the problem
> remains. I also add "-mca btl ^cscotun0 -mca btl_tcp_if_exclude cscotun0"
> with no eff
Ah, yes - that pinpoints the problem. It looks like your vpn is indeed
interfering with connections. I suspect it must be some kind of vpn/Ubuntu
configuration issue as I have the same experience on my Mac laptop that you
report (i.e., no issue).
I'd suggest googling the Ubuntu site (or just in
Following up on your TCP remark, I found that during the delay, netstat -tnp
shows
tcp0 1 192.168.1.3:56343 192.168.1.3:47830 SYN_SENT
24191/mpi_hello
and that while the vpn is connected, I am unable to ping 192.168.1.3 (the
machine I am on).
On the other hand, on the
Thanks Ralph. I have a Mac OS X 10.6.8 laptop where I can run
open-mpi 1.2.8 and open-mpi 1.6.4 with the vpn connected without any problem,
even without having to exclude the vpn interface, so you're probably right --
the existence of the vpn interface alone doesn't explain the problem.
Neverthele
The process is hanging trying to open a TCP connection back to mpirun. I would
have thought that excluding the vpn interface would help, but it could be that
there is still some interference from the vpn software itself - as you probably
know, vpn generally tries to restrict connections.
I don'
