On Mon, Nov 11, 2013 at 7:17 PM, David Cournapeau <[email protected]>wrote:
> Hi there, > > I have noticed more and more subtle and hard to track serious bugs in > numpy and scipy, due to the use of advanced optimization features (flags, > or gcc intrinsics). > > I am wondering whether those are worth it: they compile wrongly under > quite a few configurations, and it is not always obvious to find the cause > (case in point: gcc 4.4 with numpy 1.8.0 causes infinite loop in > scipy.stats, which disappear if I disable the intrinsics in > numpy/npy_config.h). Maybe they should be disabled by default, and only > built in if required ? Do we know for sure they bring significant > improvements ? > > While gcc 4.4 is not the most recent compiler, it is not ancient either, > > What happens with more recent gcc? Chuck
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