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
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