[Wien] Benchmark on Laptop with Pentium M 760

[lombaeb at science.unisa.ac.za]

I was using SUSE 10.0 x86_64, with the same smp kernel in all the tests:
2.6.13-15-smp.

In the MKL80 release notes the following is mentioned:
'Hyper-Threading Technology (HT Technology) is especially effective when 
each thread is performing different types of operations and when there are 
under-utilized resources on the processor. Intel MKL fits neither of these 
criteria as the threaded portions of the library execute at high 
efficiencies (using most of the available resources) and perform identical 
operations on each thread. You may obtain higher performance when using 
Intel MKL without HT Technology enabled.'

Regards
Enrico

On Tue, 
29 Nov 2005, Gerhard H Fecher wrote:

> For all who travel,
> I was wondering how fast those Intel mobile CPUs are. I am travelling a lot 
> and sometimes I am doing some calculations to keep my Notebook busy.
> Here are the results compared to an about 3 years old desktop computer.
> As expected, the P-M consumes less power, but is slower and even slower  than 
> expected from the clock speed ratio (2.8/2 = 1.4). Results are below.
> (Did someone make tests with AMD processors (mobile, X2) ?)
> 
> Dear, Enrico or Michael, did you use the standard or any smp Kernel when you 
> observed that HT slows down the 640 ? (in \var\log\boot.msg you will find the 
> actual kernel number)
> 
> Ciao
> Gerhard
> 
> System for LAPTOP Test
> Operating System: SUSE Linux 9.3 (kernel 2.6.11-21.9-default)
> Computer: Laptop IBM T43 (2005)
> CPU:      Intel Pentium Mobile: P-M 760 (2.0GHz, 2MB L2)
> Memory:   1 Gbyte
> Compiler/Library: Intel ifort 9.0.021, mkl 8.0.019
> Compiler and Linker Options:
> FOPT:     -FR -w -mp1 -prec_div -pad -ip -xB
> LDFLAGS:  -L/opt/intel/fc90/lib -i-static -lguide -lguide_stats -lsvml
> R_LIBS:   -L/opt/intel/mkl80/lib/32 -lmkl_lapack -lmkl_ia32 -lguide 
> -lguide_stats
> 
> Laptop-Result for full clock speed (no powersave etc):
>        NUMBER OF K-POINTS:           1
>    ===> TOTAL CPU       TIME:    447.8 (INIT =      2.2 + K-POINTS =    445.6)
>    > SUM OF WALL CLOCK TIMES:    453.2 (INIT =      2.8 + K-POINTS =    450.4)
>       Maximum WALL clock time:    453.594756841660     
>       Maximum CPU time:           447.910000000000     
> 
> 
> System for DESKTOP Test
> Operating System: SUSE Linux 9.2 (multiprocessor kernel 2.6.8-24.18-smp)
> Computer: Dell (2003)
> CPU:      Intel Pentium IV: P-IV (2.8GHz, 512kB L2, HT)
> Memory:   1.48 Gbyte
> Compiler/Library: Intel ifort 9.0.021, mkl 8.0.019
> Compiler and Linker Options:
> FOPT:     -FR -w -mp1 -prec_div -pad -ip -xN
> LDFLAGS:  -L/opt/intel/fc90/lib -i-static -lguide -lguide_stats -lsvml
> R_LIBS:   -L/opt/intel/mkl80/lib/32 -lmkl_lapack -lmkl_ia32 -lguide 
> -lguide_stats
> 
> Desktop-Result:
>        NUMBER OF K-POINTS:           1
>    ===> TOTAL CPU       TIME:    247.3 (INIT =      1.9 + K-POINTS =    245.4)
>    > SUM OF WALL CLOCK TIMES:    250.5 (INIT =      2.3 + K-POINTS =    248.2)
>       Maximum WALL clock time:    250.995240926743     
>       Maximum CPU time:           247.420000000000 
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