[Visualpython-users] Processor

[Bruce P. <bap...@te...>]

Well I'm not sure this is the same problem; but I've run into conflicts 
when using Pentium processors with Hyper Threading technology . I have a 
Visual/Python application that is multi threaded and it appears that the 
low level hardware threading and the software threading interfere with each 
other. The HT option can be turned off in the bios setup options so it's 
easy enough to check.

Bruce

At 08:28 PM 10/10/2005, you wrote:

>Message: 1
>From: "John Brawley" <jb...@te...>
>To: <vis...@li...>
>Date: Mon, 10 Oct 2005 10:47:48 -0500
>Subject: [Visualpython-users] Processors
>
>Is anybody aware of any _processor-specific_ problems between VPython and
>Python itself?
>
>I some time ago found I could not run Python 2.4 with the VPython for it, on
>one machine with an AMD CPU, but could on the other machine, with an Intel
>CPU.  (In both cases, older processors, 300 and 200 MHz respectively.)
>
>I now find Python/VPython runs perfectly (I _need_ P2.4.1, because it has
>the "crosseyed" keyword for stereo) on a dual-processor XEON machine (Compaq
>Evo W6000 workstation), but does not run on an AMD K62 500 MHz machine.  I'm
>currently building a new AMD Athlon 64 3400+ machine, primarily to run this
>very program of mine, and I'm worried the Pythons won't run on it.
>
>Facts: no difference at all between machines as far as installing Python,
>VPython, and Numeric on them.  The only difference I can figure between
>machines is the type of processor --AMD or Intel.  Older Python/VPython
>installations run fine on both my earlier machines.  2.4 and 2.4.1 do not
>run on the AMD machines.
>
>WHY NOT ?
>
>(I'll dig into the exact error messages and such later, after I have the new
>machine built and running.  I just right now want to know if anybody here
>has run into _any_ CPU-specific problems with Python/VPython 2.4 and later.)
>
>   Any thoughts?
>
>Peace
>JB

Bruce Peterson, Ph.D.
Terastat, Inc
Information Access Systems
Voice (425) 466 7344
Fax (206) 350 3685