[Numpy-discussion] Incompatability of svn 3868 distutils with v10.0 Intel compilers and MKL9.1

David M. Cooke cookedm@physics.mcmaster...
Thu Jun 14 09:27:35 CDT 2007


On Thu, Jun 14, 2007 at 04:17:04PM +0200, Albert Strasheim wrote:
> Hello all
> 
> On Thu, 14 Jun 2007, Matthieu Brucher wrote:
> 
> > >
> > >cc_exe = 'icc -g -fomit-frame-pointer -xT -fast'
> > 
> > Just some comments on that :
> > - in release mode, you should not use '-g', it slows down the execution of
> > your program
> 
> Do you have a reference that explains this in more detail? I thought -g 
> just added debug information without changing the generated code?

I had a peek at the icc manual. For icc, -g by itself implies -O0 and
-fno-omit-frame-pointer, so it will be slower. However, -g -O2
-fomit-frame-pointer shouldn't be any slower than without the -g.

For gcc, -g does what you said.

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|David M. Cooke                      http://arbutus.physics.mcmaster.ca/dmc/
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