[Psyco-devel] psycon on x86_64 (Intel bi-Xeon 3GHz with hyperthreading)

[Emanuele O. <oli...@it...>]

Hi,
I successfully compiled psyco on x86_64 host with 2 cpu intel Xeon
3GHz with hyperthreading (virtually 4 cpus) using 32bit mode (= using
"gcc -m32" instead of "gcc") because 64bit mode didn't compiled (see
c/codegen.h). Python too was (obiviously) recompiled in 32bit mode, but
after testing performaces I noticed that using psyco SLOWED DOWN
execution time!

details:
----
time python bpnn.py
...
6.849u 0.006s 0:06.85 99.8%     0+0k 0+0io 0pf+0w
----
----
time python bpnn_no_psyco.py
...
3.019u 0.013s 0:03.03 99.6%     0+0k 0+0io 0pf+0w
----

If I use psyco in my python code (basically numeric-python stuff) it
is 10% slower on x86_64 and 3x faster on my old x86_32...??why??

How can I use psyco on x86_64 and gain some speed? I mean using 32bit
mode.

Thanks in advance,

Emanuele