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There seems to be some problems with the Pentium optimizations and K6
processors. If you try to run pov with them enabled (-D586) it will hard
lock the machine. You have to do a full processor reset (power cycle)
to get it working again. Has anyone expierienced these problems?
Compiler: gcc 2.7.2.1 and egcs 1.1.2 (tried both)
System: FreeBSD 3.2, FreeBSD 3.3, FreeBSD 4.0-CURRENT (I tested this on
a lot of machines :))
Processor: AMD K6-2 @ 350MHZ, AMD K6 @ 300, AMD K6-2 @ 333
It works fine on Intel based systems running FreeBSD... even one dual
processor P166.
Yann
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Yann Ramin atr### [at] atrustrivalie euorg
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Monterey High IT www.montereyhigh.com
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AIM oddatrus
Marina, CA
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Yann Ramin wrote:
>
> There seems to be some problems with the Pentium optimizations and K6
> processors. If you try to run pov with them enabled (-D586) it will hard
> lock the machine. You have to do a full processor reset (power cycle)
> to get it working again. Has anyone expierienced these problems?
This is the first I've heard of it, though it doesn't entirely surprise
me. The Linux kernel instructions suggest telling AMD and Cyrix CPU's
that they're 386's in order to avoid making wrong assumptions in the
course of optimization.
For future releases, I'm just going to stick with 386 optimizations, as
it seems those are fairly safe. I'll also make a point of strongly
suggesting to people that they download and compile POV-Ray themselves
on their own hardware (once I have a good configure script put together)
in order to get better performance than they can get with a highly
generic binary.
-Mark Gordon
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