Messages in this thread | | | Subject | Re: Preliminary tests indicate: | From | (Joel N. Squire) | Date | 02 Jun 1997 21:50:36 -0600 |
| |
Aaron Tiensivu <tiensivu@pilot.msu.edu> writes:
> > AMD K6's like GCC's "-fforce-addr -fforce-mem" options, it seems. > My thruput with hdparm went up a bit and other things seem > pretty spunky. > > Give it a whirl and see what it does for you. :) >
Interesting...
Since I was playing around with this already, I tried these options with the Byte benchmark suite. Results for a K6-200 :
before-> after
Integer 3.451 -> 3.493 FP 1.747 -> 1.722
The full results are avaliable if you want them. Summary -- Most of the integer results went up ~ 2 - 8 %, with Numeric Sorting dropping by 10%. For floating point, LU Decomp went up 6%, Neural Net went down 13%, and Fourier was essentially unchanged.
According to the GCC man pages, -fforce-mem is turned on by -O2, and benching seems to bear this out.
--
Joel Squire <squire@colorado.edu> CCAR Systems Administrator Ph (303) 492-1308 FAX (303) 492-2825 University of Colorado, Boulder
| |