Re: [MLUG] Anyone got a fast modern computer

[Stephen Montgomery-Smith <EMAIL:PROTECTED>]

Is this a 3 year old computer?  If so, the times are rather good!

I can calculate the CPU core usage from the data you sent me:
(user+sys)/real/2*100%.


Jack Smith wrote:
> On Sat, 2008-07-05 at 00:28 -0500, Stephen Montgomery-Smith wrote:
> 
>> Well, let me put it out for anyone to try.  The program is at 
>> http://www.math.missouri.edu/~stephen/software/spherical.  This is what 
>> to do:
>>
>> tar xvfz spherical-1.15.tar.gz
>> cd spherical-1.15
>> make
>>
>> If the make doesn't work, delete the "-march=native" in CFLAGS in 
>> Makefile.  Edit timetest.sh so that NR_THREADS is equal to the number of 
>> processors/cores that you have.  Then run the test:
>>
>> ./timetest.sh
>>
>> Then send me the results, which will be in record.txt, along with specs 
>> of your computer, and what value you used for NR_THREADS.
> 
> Sorry for the late reply, but here goes:
> 
> Hardware:
> CPU: AMD Athlon 64 X2 4200+ (socket 939, 2.20 GHz, 2x512 L2 cache)
> Motherboard: abit KN8-SLi (NVIDIA CK804 chipset)
> RAM: 4x1 GB DDR-400 
> OS: Debian Lenny (testing) amd64
> Compiler: GCC 4.3.1 
> If you need more specs, I can give 
> 
> Run #1: NR_THREADS=2
> parameters-dd.txt
> 
> real    1m18.809s
> user    1m31.962s
> sys     0m8.645s
> parameters-ft100.txt
> 
> real    0m30.777s
> user    0m47.343s
> sys     0m1.984s
> parameters-ft.txt
> 
> real    0m7.827s
> user    0m8.541s
> sys     0m1.236s
> parameters-jef.txt
> 
> real    83m28.089s
> user    123m30.115s
> sys     0m50.379s
> parameters-mj.txt
> 
> real    1m40.885s
> user    1m34.754s
> sys     0m5.920s
> 
> CPU usage was approximately 80% on each core.
> 
> Run #2: NR_THREADS=3
> parameters-dd.txt
> 
> real    1m21.275s
> user    1m33.350s
> sys     0m16.441s
> parameters-ft100.txt
> 
> real    0m35.580s
> user    0m48.043s
> sys     0m3.812s
> parameters-ft.txt
> 
> real    0m8.883s
> user    0m8.933s
> sys     0m2.796s
> parameters-jef.txt
> 
> real    88m8.775s
> user    119m32.060s
> sys     0m50.923s
> parameters-mj.txt
> 
> real    1m22.137s
> user    1m34.226s
> sys     0m15.585s
> 
> I did this over ssh from another machine and did not get to check on CPU
> usage. I could try this on the laptop if you want- I didn't test it
> already as I have pretty much mothballed the laptop as it's my class
> notes machine and I have no use for it in the summer. Oh, and it's power
> supply is being loaned out to an ancient laptop I have running a MythTV
> frontend and I don't exactly want to take that down if I don't have to.
> 
> --Jack
> 
> 
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> 


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