Re: [ROOT] Re: rh8 and rh9

From: Jiri Masik (masik@fzu.cz)
Date: Wed Apr 09 2003 - 17:33:23 MEST


Hi Fons,

thanks for the explanation. The improvement is indeed marginal - 2 of
180 rootmarks on my Powerbook G3/400. Certainly not worth of the
potential trouble.  
cheers

Jiri

Fons Rademakers <Fons.Rademakers@cern.ch> writes:

> It is mostly a compile time issue and some optimizers barfed on the,
> potentially, very large source files. Not much is gained by optimizing
> the dictionaries.
>
> Cheers, Fons.
>
>
> On Tue, 2003-04-08 at 16:08, Jiri Masik wrote:
>> Rene Brun <Rene.Brun@cern.ch> writes:
>> 
>> > Why did you change the optimisation options. I strongly suggest
>> > to use the standard option (-O instead of -O3 -march=athlon-xp 
>> > -mfpmath=sse -m32) and try the optimisation option only once the 
>> > standard configuration works.
>> 
>> Hi,
>> 
>> it reminds me that the dictionary files of Root are not compiled with
>> optimisation. Is it on purpose? Are there any known problems with that?
>> cheers
>> Jiri
>> 
>> for example on linuxdeb2ppc:
>> g++-3.2 -O3 -mcpu=750 -mtune=750 -g -pipe -Wall -fPIC -fsigned-char -Iinclude  -o proof/src/TSlave.o -c proof/src/TSlave.cxx
>> g++-3.2  -pipe -Wall -fPIC -fsigned-char -Iinclude  -I. -o proof/src/G__Proof.o -c proof/src/G__Proof.cxx
> -- 
> Org:    CERN, European Laboratory for Particle Physics.
> Mail:   1211 Geneve 23, Switzerland
> E-Mail: Fons.Rademakers@cern.ch              Phone: +41 22 7679248
> WWW:    http://root.cern.ch/~rdm/            Fax:   +41 22 7679480



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