Re: Alpha C/C++ performance

A.Arnold (arnold@zam331.zam.kfa-juelich.de)
Mon, 28 Oct 1996 10:07:39 +0100

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Kari Davidsson: "Re: Overclocking ones again"
Previous message: Mihaly HOMONNAI: "wanted: an official proforma invoice"

>The words about the quality of the compiler's output come from folks
>who use the CPU in OSF and GNU/Linux. Have you compared the code
>stream from the two compilers? It would be interesting to compare
>your programs running on GNU/Linux and OSF.

Just my $0.02:

I am currently in the process of porting a big Pascal program to C, and
I have an Alphastation 500/266 with OSF at work, and a Jensen with Linux
(still ECOFF - haven't had the time to update so far...) at home. When
I link the program statically under OSF and take it to the Jensen, it
runs about 30% faster than a version compiled with gcc. In both cases,
I tired to get every optimization option from the compiler I could get.

The program contains almost no floating point arithmetic (it is a cross
assembler for a variety of microcontrollers like the 8051, HC11...), but
it contains a lot of string operations..

Alfred Arnold

-- -------------------------------------------------------------------------------- Alfred Arnold Phone: +49 (2461) 61-2434 Zentralinstitut fuer Angewandte Mathematik Fax : +49 (2461) 61-6656 Forschungszentrum Juelich E-Mail: a.arnold@kfa-juelich.de D-52425 Juelich, Germany

"One has to look out for engineers - they began with sewing machines and ended up with the atomic bomb" - Marcel Pagnol, Critique des critiques --------------------------------------------------------------------------------

--
To unsubscribe: mail -s unsubscribe axp-list-request@redhat.com < /dev/null

Next message: Kari Davidsson: "Re: Overclocking ones again"
Previous message: Mihaly HOMONNAI: "wanted: an official proforma invoice"