[Spread-users] Problem with multiple network interfaces
vivien.quema at inrialpes.fr
Thu Sep 13 10:06:58 EDT 2007
Le 13 sept. 07 à 15:32, John Lane Schultz a écrit :
> Hi Vivien,
> First, please send the Spread_Segment blocks of your two
> spread.conf files to the list.
> Second, I believe the reason why you are getting a failure when you
> put the fast ethernet address is because Spread does a gethostname
> () to determine the machine it is on, which probably resolves to
> the giga address by default. You can override this behavior by
> running spread with the "-n <server_name>" command line parameter.
> In this case you should just do:
> ./spread -n itaf27
It works perfectly. Many thanks.
Thank you also for all other answers. Unfortunately, I was not able
to test them as I don't have root access on the test machines.
Just two other questions:
1) I am doing benchmarks to evaluate the throughput that Spread
There are 3 nodes that are interconnected using a Fast ethernet
network. Consequently, I just have one segment and each node executes
a Spread daemon. The benchmark works as follows:
- all nodes send a burst of messages (1000 messages of 1k each).
I get around 70Mb/s, which is good on a 100Mb/s network.
Nevertheless, what is surprising me is that I Spread achieves the
same performance for reliable, fifo, total, agreed and safe delivery
Does it make sense for you?
2) Moreover, running the same benchmark on another cluster, I get
very bad performance (around 3Mb/s). Did you observe similar
behaviors? I suspect these bad results to be the consequence of the
fast switch droping multicast packets.
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