Shuttle HOT649a (BX chipset)
Dual 300a celery Oc'd 450mhz
(still the best deal running @ $160.00 for both processors)
Linux 2.0.36
./pi 100000 2
Process: 0.007973 secs.
Thread 0: 0.007147 secs.
Thread 1: 0.007142 secs.
Estimation of pi is 3.141593
> I just joined this group. For the record, I built a 2.2.4 kernel with
SMP
> enabled and it started fine
> on my dual PPro box [TYAN S1668 motherboard, 440FX PCI-ISA]. Since there
> are no "official" benchmarks
> to verify dual processor speed, I wrote the following applet based on the
> "Parallel programming mini-howto".
> This applet calculates the value of PI given the number of interations (say
> 100000) and the number of threads.
> It would be interesting for others to build and run this, then report some
> results for comparison. In particular, I'm interested in BX chipsets and
> how shared memory configurations differ. Building the applet:
>
> gcc -O pi.c -o pi -D_REENTRANT -lpthread -lm
> ./pi 100000 2 // times 2 threads calculating PI using 100000
> iterations
>
> Source code:
>
> (See attached file: pi.c)
>
>
> Here are my timings: (dual PPRO 150 MHz)
>
> Process: 0.029640 secs.
> Thread 0: 0.028207 secs.
> Thread 1: 0.028114 secs
> Estimation of pi is 3.141593
>
> The total process took 29.6 ms. which consists of 2 threads running in
> parallel (thread 0 = 28.2 ms, thread 1 = 28.1 ms).
>
> On another note, I am building a dual Celeron PCI card (custom design) and
> would like to combine Real-time Linux with SMP into an embedded, bootable
> kernel. Anyone ever work on this?
>
> Regards,
>
> Terry Arden
>
The Perfect Image http://www.perfect-image.com
2429 W. 12th St.
Tempe, AZ 85281
(602) 894-1700
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