On Apr 21, 2005, at 4:50 AM, Tayseer Sweiti wrote:
> If I have a PC with two network interface cards with ,different IP's
> one NIC is connected to a network using a switch, the other is
> directly connected to another PC Let us name it PC1, LAM/MPI is
> running on the network which is connected using a switch, can LAM/MPI
> which is running on the network be also run on PC1 (which is connected
> to the network through another PC).
I'm not exactly sure what network topology you have (it was a bit
confusing), but I think the answer is "it depends". LAM requires (from
an IP point of view) that all hosts in a LAM universe be fully
connected. That is, I have to be able to send a TCP or UDP packet
from any host to any host and it has to get there with no extra work on
LAM's part. LAM will not explicitly determine topologies and route
around non-fully connected networks.
Other than that, we just use hostnames to determine what IPs to use
when connecting. So as long as any node in the universe can talk to
any other node and the hostname / IP addresses are all setup in a sane
way, you should be able to run LAM on interesting network layouts
without too much hassle.
Brian
--
Brian Barrett
LAM/MPI developer and all around nice guy
Have a LAM/MPI day: http://www.lam-mpi.org/
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