why is python slow on Solaris?

[Gerhard Häring]

On Sun, 05 Aug 2001 19:56:07 +0100, Tony McDonald wrote:
>On 5/8/01 5:46 pm, "Skip Montanaro" <skip at pobox.com> wrote:
>
>> 
>>   Tony> This is on an Enterprise 3500 - UltraSparc at 400MHz (ie a big box)
>>   ...
>>   Tony> Can anyone tell me why this is so, and more importantly, what I
>>   Tony> can do to compile up python to run faster on Solaris?
>> 
>> Well, you didn't really give any indication what optimization you used with
>> gcc.  I'd start there.  There are a number of SPARC-specific flags for gcc
>> as well as a number of different optimization levels you can try.
>
>Thanks for the reply Skip, yes Sorry I did miss that part out;
>
>gcc -fPIC -g -O2 -Wall -Wstrict-prototypes
>
>I've built a copy of GCC 3.0 with a 64-bit architecture, but there are
>problems with that as the following shows;
>
>% file python
>python:         ELF 64-bit MSB executable SPARCV9 Version 1, dynamically
>linked, not stripped
>
>Python 2.1 (#6, Aug  5 2001, 16:34:01)
>[GCC 3.0] on sunos5
>Type "copyright", "credits" or "license" for more information.
>>>> import pystone
>Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "pystone.py", line 37, in ?
>    from time import clock
>ImportError: ld.so.1: ../../python: fatal: libgcc_s.so.1: open failed: No
>such file or directory

Hmm. Seems like it doesn't find the runtime library. Setting LD_LIBRARY_PATH
(or whatever the equivalent on Solaris is) or linking with -rpath should help.

You could also try compiling with Sun's compiler, if you have access to it. One
might think they know how to generate optimized code for their own chip.

Gerhard
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