Re: turion/mobile athlon benchmark

[Anders Peter Fugmann <afu@fugmann.net>]

A. P. Kennedy wrote:
> ****************** Turion below but with 32 bit kernel ***********
>
> # /usr/lib/atlas3-test/xzinvtst
>
> NREPS  ORDER   UPLO      N    LDA      TIME     MFLOP         RESID
> =====  =====  =====  =====  =====  ========  ========  ============
>
>     0    Col     GE    100    100     0.008    996.37  6.066196e-03
>     0    Col     GE    200    200     0.045   1419.78  5.083446e-03
>     0    Col     GE    300    300     0.154   1401.06  4.577686e-03
>     0    Col     GE    400    400     0.353   1449.29  5.339619e-03
>     0    Col     GE    500    500     0.684   1461.11  4.390384e-03
>     0    Col     GE    600    600     1.172   1473.71  4.389517e-03
>     0    Col     GE    700    700     1.865   1470.75  4.753297e-03
>     0    Col     GE    800    800     2.793   1466.06  5.002779e-03
>     0    Col     GE    900    900     3.912   1490.02  5.070376e-03
>     0    Col     GE   1000   1000     5.278   1515.10  5.078879e-03
>
> 10 cases: 10 passed, 0 skipped, 0 failed
>
> # cat /proc/cpuinfo 
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 15
> model           : 36
> model name      : AMD Turion(tm) 64 Mobile Technology ML-32
> stepping        : 2
> cpu MHz         : 1800.307
> cache size      : 512 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 1
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm
> bogomips        : 3601.38

It would be great is you were able to run these tests using a 64 bit 
kernel and a 64 bit version of atlas3. It seems that there is a huge 
performance win for atlas under 64 bit, as I cannot imagine that the 
difference in 2. level cache (one half of that of a turion MT) can give 
this huge difference in MFlops.

Gathering some of the data (Dual system excluded):

MFLOPS	MHz	MFLOPS/MHz	System
3113.9	2010	1.55 		Opteron
2879.13	2009	1.43 		Std amd64
3367.67	2556	1.33 		Newcastle
2148.33	1607	1.34 		Turion MT
3317.38	2411	1.38 		Std amd64
1515.1	1800	0.84  		Turion ML - 32 bit

Reading this table (disregarding the 32 bit test) it seems that the 
Turion processors is just as fast as a standard opteron in terms of 
MFlops/MHz. The opterons beat every other AMD based CPU in this regard, 
which would be expected.

One should note that the Turion MT-30 has a max power consumption of 25 
Watt, where as the Opteron tops at 89 Watt IIRC - Huge gain in FLOPS / 
Watt when using a turion processor.

Regards
Anders Fugmann