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Re: [Manta] Compiling using SSE on IA64


Chronological Thread 
  • From: Dirk Reiners <dirk@lite3d.com>
  • To: manta@sci.utah.edu
  • Subject: Re: [Manta] Compiling using SSE on IA64
  • Date: Sun, 04 Nov 2007 22:09:58 -0600

        Hi Abe,

Abe Stephens wrote:
Hi, That is a combination we never tried--I can try to sort it out on one of our itaniums this week--probably the change will be in the CMake/Config{Architecture,CompilerFlags} script.

I'd appreciate that! We're planning to exhibit our Manta-based remote ray tracer/Ray-Traced Virtual Reality at SC, and it would be much nicer to actually have good performance and not just brute (well, semi-brute, 160 cores for two eyes ;) force.

For other applications do you have a sense of how good 4.1.2 is on IA64? Back in 2005 there was a 50% performance hit for using GCC over ICC.....

Manta is the only app I care about on Itanium right now. I can ask some of the other people in the lab to see what their experience is, but I think the performance-conscious people are using Fortan anyway. ;)

Thanks

        Dirk



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