POV-Ray : Newsgroups : povray.unix : Performance of GNU vs. Intel C++ compiler on AMD64 : Re: Performance of GNU vs. Intel C++ compiler on AMD64 Server Time
15 May 2024 16:22:09 EDT (-0400)
  Re: Performance of GNU vs. Intel C++ compiler on AMD64  
From: clipka
Date: 1 Nov 2009 16:20:12
Message: <4aedfb8c$1@news.povray.org>
nemesis schrieb:
> clipka wrote:
>> - Photons paint a totally different picture: When compiled with Intel 
>> icpc (both versions 11.0 and 11.1), POV-Ray has been segfaulting on me 
>> sporadically (but quite frequently) ever since, with any scene that 
>> uses photons. (We're talking about Debian Linux, both 4.0t5 "Etch" and 
>> 5.0.3 "Lenny", running on an AMD Phenom X4 9650.) When compiled with 
>> GNU g++ (both versions 4.1.1 and 4.3.2), I have never encountered any 
>> such crashes so far. I actually suspect some bogus optimization here.
> 
> and probably hard to find... :P

You bet. I tried to track it down months ago, but it would escape all my 
attempts to put a finger on it, so finally I decided to postpone it 
until someone else would complain as well. Who knows - maybe it's even 
limited to my particular machine.


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