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Re: 2 fail with tip chol.cc


From: Jarno Rajahalme
Subject: Re: 2 fail with tip chol.cc
Date: Mon, 24 Jan 2011 08:46:44 +0200

On Jan 21, 2011, at 19:16 , ext Jaroslav Hajek wrote:
> 
> Yes, some ATLASes have a buggy CHERK, that's a recurring issue. I
> don't think your patch actually helps in all cases, because I've seen
> stuff like CHERK creating (NaN, 0) on the diagonal :(
> This is really something that should be fixed in ATLAS (and maybe it
> was fixed, I never got around to try the development version).
> 
> In any case, if you're making a workaround that decreases performance,
> even if only slightly (such as in this case), I suppose you should
> better mark it as a workaround, because it's unlikely that someone
> will be able to undo the change later.

I guess it would be too much trouble to check for the bug in configure and only 
work around if needed?

  Jarno

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