[openib-general] MPI Brodcast doubt

[john t]

Hi,

I have 3 nodes connected via IB as shown below:

node1 ---> switch1 ---> node2
                    |----------> node3

If node1 sends a brodcast message to node2 and node3, I want to know if the
message is delivered to the switch twice (first time for node2 and second
time for node3) or just once (where switch will know by looking at some
headers or so that its a brodcast message and will send it on all the
outgoing ports) ?

Regards,
John T.
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