--enable-hwloc (it's enabled by default if you have hwloc-devel installed)
The /positive/ impact on performance is tremendous.
Hwloc helps us get a better picture of the underlying CPU architecture and
topology and optimize scaling of the number of threads and their alignment accordingly
Mind me asking, what do you mean by compile with hwloc, meaning advantages or performance impact. And how do i compile with hwloc ? I'm compile on Centos 6.2 64bit fyi.
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