No Subject
- To: MISC
- From: lowry@xxxxxxxxxxxxxxxxx (Dave Lowry)
- Date: Thu, 3 Aug 95 13:21:45 CDT
- Posted-Date: Thu, 3 Aug 95 13:21:45 CDT
With great trepidation I enter the benchmark flamefest...
Mark asks for some benchmarks. I have written a 3d graphics package in
Forth, and benchmarked P21 versus PCs. The calculations are in 20 bit
fixed point (16 bit for PC), and consist almost entirely of matrix operations,
with lots of multiplications (one of P21's weak points).
I offer this benchmark not because I think it's important, only because it has
a scientific computation flavor.
Keep in mind that this benchmark also is comparing P21Forth (few CODE words)
with LMI UR/Forth (highly optimized).
P21 is generating video, and running from DRAM. With no video and running
from SRAM, P21 should go 3 times faster. But, I haven't measured that
configuration.
CPU Seconds
P21/SRAM 10 *estimated*
486DX40 19
P21/DRAM 30
386DX20 35
Given the efficiency differences between P21Forth and LMI UR/Forth, it looks
to me like P21 *with video* is about 486DX40 class.
-Dave
