Hi Antonio,
On Thu, 2005-09-22 at 13:18 +0200, antonio_lioy wrote:
> Dear friends, we are using openSG tutorial 12(cluster server) and 13
> (cluseter client) to split a scene
> between a two wall cave. Every wall has two pc, intel xeon, linked by
> gigabit ethernet.
> We have a problem, the startup takes too much time (about 5 min), once
> the system is running all works fine.
Wow! I don't think anybody ever had that that kind of patience. :) If it
doesn't start up in 10 seconds I usually kill it...
> It is normal?
> We suspect that it's a multicast problem, someone has our problem?
It could very well be.
> Is there a way to use unicast addressing?
OpenSG uses multicast in two different ways, once for server discovery,
and then for transferring data. Switching the data transfer to unicast
is done by just not using the -m switch to the client and server. If
that doesn't help you can also do manual server discovery by giving an
<IP>:<port> pair instead of the name (this only works in current
versions of OpenSG, i.e. 1.6 and up).
For example like this for running on a single machine:
./12ClusterServer -geometry 300x300+200+100 -w 127.0.0.1:30000 &
./12ClusterServer -geometry 300x300+500+100 -w 127.0.0.1:30001 &
./13ClusterClient -fData/tie.wrl 127.0.0.1:30000 127.0.0.1:30001
This also allows you get around problems in systems with multiple
network cards (which are the reason for most multicast problems).
Hope it helps
Dirk
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