[Beowulf] Re: fast compiler question (pathscale/portland group/gcc)

Tom Elken elken at pathscale.com
Thu Feb 8 17:07:40 EST 2007


> Date: Wed, 07 Feb 2007 21:11:50 -0500
> From: Joe Landman <landman at scalableinformatics.com>
> Subject: [Beowulf] fast compiler question (pathscale/portland
> 	group/gcc)

>    Rebuilding a code that uses sse2 inlines.  Apart from setting up the 
> appropriate include path for the intrinsic headers, are there any magic 
> switches I need to set?  I had done this a while ago, and now I am 
> rebuilding someone-elses-code, and trying to remember what I did before.
> 
>    Most interested in gcc/pathscale.  

Hi Joe,

Regarding PathScale Compilers, I have this from one of our compiler engineers:
-----------------------
If the code already uses SSE2 intrinsics, the PathScale compiler does not need 
any "magic switches" for SSE2 intrinsics to be enabled. Some applications may 
need a configuration switch like --enable-sse for the application to use sse 
intrinsics. This is just a configure switch for the application, and not an 
option for the compiler.
-----------------------

Cheers,
Tom


-- 
~~~~~~~~~~~~~~~~~~~       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Elken                 Manager, Performance Engineering
tom.elken at qlogic.com      QLogic Corporation
650.934.8056              System Interconnect Group

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