BFS vs. mainline scheduler benchmarks and measurements
BFS vs. mainline scheduler benchmarks and measurements
Posted Sep 7, 2009 8:14 UTC (Mon) by ketilmalde (guest, #18719)In reply to: BFS vs. mainline scheduler benchmarks and measurements by drag
Parent article: BFS vs. mainline scheduler benchmarks and measurements
> There is not one single person I know that owns a dual-socket desktop.
I have an old dual Pentium-II 450MHz. It's not actually in use anymore, though, so it probably doesn't count.
> That being said I don't think it would make a big deal.
I think it might - things like processor affinity is likely to matter a great deal more on multiple socket systems than on just multicore systems. Multicore chips typically come with a large, shared cache, so moving threads across cores isn't as costly as moving them across sockets.
From what I read, BFS doesn't even try to be NUMA-aware, it doesn't seem unreasonable that it would perform quite differently on single and multi-socket systems.
-k