On Wed, 28 Nov 2012, Kirk, Benjamin (JSC-EG311) wrote:
> If at all possible I'd rather treat that as --enable-gprof and add > the flags to the existing dbg, devel, opt flags The trouble with this is that the gprof and oprof flags aren't without cost. IIRC "-pg" adds in extra code (including synchronous writes to disk!!); "-fno-omit-frame-pointer" turns off an optimization that even "-O" includes by default; and I suppose even "-g" must have some cost or we'd have added it to METHOD=opt already. So if you mix profiling with optimization, the result isn't really optimized. But if you mix profiling with debug/devel modes, then your runtime data is all swamped by the costs of internal tests and disabled optimizations, so the result isn't really profiling. --- Roy ------------------------------------------------------------------------------ Keep yourself connected to Go Parallel: INSIGHTS What's next for parallel hardware, programming and related areas? Interviews and blogs by thought leaders keep you ahead of the curve. http://goparallel.sourceforge.net _______________________________________________ Libmesh-devel mailing list Libmesh-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-devel
