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Re: [Manta] Compiling using SSE on IA64


Chronological Thread 
  • From: Abe Stephens <abe@sci.utah.edu>
  • To: Dirk Reiners <reiners@cacs.louisiana.edu>
  • Cc: manta@sci.utah.edu
  • Subject: Re: [Manta] Compiling using SSE on IA64
  • Date: Sun, 4 Nov 2007 20:28:02 -0700
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.

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.....

Abe

On Nov 3, 2007, at 11:14 AM, Dirk Reiners wrote:


        Hi All,

I'm trying one more time to compile Manta on IA64 with SSE. The latest .026 Intel compiler still crashes with backend signals problems, so that's not an option.

I'm trying to use g++ (4.1.2). Just turning on MANTA_SSE breaks because -msse and -msse2 are only known on i386, not ia64. Turning on MANTA_SSE_GCC breaks because of 'Couldn't find *epi64x intrinsics', which as far as I can tell is x86_64-specific.

Any ideas what i can do?

Thanks

        Dirk





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