Alan Cox wrote:
>
> > The same results for an idle system (single 500 MHz PIII, Asus P3F, PGI
> > 3.1 Fortran compiler):
> >
> > Function Rate (MB/s) RMS time Min time Max time
> > Copy: 320.0000 0.0522 0.0500 0.0600
> > Scale: 320.0000 0.0500 0.0500 0.0500
> > Add: 400.0000 0.0662 0.0600 0.0700
> > Triad: 400.0000 0.0652 0.0600 0.0700
> >
> > Not so much different from the Athlon results!?
>
> I wonder how much that is the compiler. Want to put the binary somewhere and
> mail me the URL and MD5 hash of it and I'll see how that one behaves on
> the Athlon ?
>
> Alan
>
> -
> Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/dmentre/smp-howto/
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I just compiled stream for our AMD Athlon 600:
Compiler: PGCC 3.1-2
Flags: -fast -tp p6 -pc 64 -Mdalign -Mvect
COMMAND: pgcc second_wall.c stream_d.c -fast -tp p6 -pc 64 -Mdalign
-Mvect -o stream
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 2000000, Offset = 0
Total memory required = 45.8 MB.
Each test is run 10 times, but only
the *best* time for each is used.
-------------------------------------------------------------
Your clock granularity/precision appears to be 1 microseconds.
Each test below will take on the order of 55956 microseconds.
(= 55956 clock ticks)
Increase the size of the arrays if this shows that
you are not getting at least 20 clock ticks per test.
-------------------------------------------------------------
WARNING -- The above is only a rough guideline.
For best results, please be sure you know the
precision of your system timer.
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 459.4861 0.0698 0.0696 0.0705
Scale: 455.5614 0.0705 0.0702 0.0713
Add: 511.1550 0.0940 0.0939 0.0945
Triad: 493.4717 0.0973 0.0973
0.0974
--
Brian D. Haymore
University of Utah
Center for High Performance Computing
155 South 1452 East RM 405
Salt Lake City, Ut 84112-0190
Email: [EMAIL PROTECTED] - Phone: (801) 585-1755 - Fax: (801) 585-5366
-
Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/dmentre/smp-howto/
To Unsubscribe: send "unsubscribe linux-smp" to [EMAIL PROTECTED]
