Re: How much CPU power & memory per node?

John Hughes <[email protected]> Wed, 07 Oct 2009 16:40:16 +0200
Newsgroups gmane.linux.cluster.ssic.user
Message-ID <[email protected]>
Advice Pro wrote:
> A 
> http://www.nabble.com/Does-OpenSSI-combine-CPU-cores-for-multithreaded-applications--td23124003.html
> question that I had asked  was answered that "All threads of a process must
> run on the same node at the moment".  I think this means that only one
> multicore CPU is ideal per node.
>   
???

You need at least one cpu per node, of course. :-)

You can use many as you feel like.

Multi-threaded apps run all threads on the same node.  (This is because 
sharing writable memory between nodes is pretty inefficient).  If you 
write your app as "multi-process" rather than "multi-thread", 
communicating using pipes, sockets or queues  instead of shared memory 
then you can distribute your app across multiple nodes.
> Where on OpenSSI.org does it state such things 
>   


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