On 4/28/2016 4:28 AM, Bill Bogstad wrote: > So memory was shared? between the QBBs? This sounds more like a NUMA > architecture environment. What would you say are the differences > between this definition > of SSI and NUMA?
In a NUMA machine, memory is directly attached to the CPUs but not all of that memory is local to each CPU. Galaxy wasn't NUMA. Each QBB was NUMA: 4 processors with 512MB local to each with the rest being non-local but still directly attached. Memory in one QBB was not directly attached to the processors in other QBBs; it was shared via software over a fibre data bus. -- Rich P. _______________________________________________ Discuss mailing list [email protected] http://lists.blu.org/mailman/listinfo/discuss
