[Spread-users] SP_multicast() from a non-member

Yair Amir yairamir at cnds.jhu.edu
Thu Jun 10 17:28:27 EDT 2004


Gautam> 1) is it permitted that a process that has not joined a group can 
Gautam> SP_multicast() to it?

Yes. This is called "open group semantics" and is one of the strong
points of the Spread architecture.

Gautam> 2) if answer is yes, are there any perf. implications of being a member 
Gautam> or not?

Thanks to the open group semantics, it is best for a process to join
a group (be a member of a group) ONLY if that process needs to
RECEIVE messages sent to the group.


     :) Yair.

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