David_Wallis

no!

I would try a Sun XW4600 running Windows, but with this poor test it still wouldnt win!

john banks

1:10 for my Core Duo T2050 (1.6GHz) laptop. Seems too slow, but only using c.55% CPU.

David_Wallis

was one core maxxed though?

this is what an application that can max out a box should look like..

This machine is processing half a billion records per hour, problem is its load balanced across 6 identical spec machines all doing the same to the CPU



Using 2x Quad-Core Intel® Xeon® Processor E5440 (2.83 GHz, 1333 MHz, 80W)

stevem2k

Bigger cluster or change the architecture then

David_Wallis

We cant change the architecture, otherwise I suggest superdome running windows

It was running on one box before and the code has just been re-worked to support the load balancing - a ten hour processing job should now take less than 1hr..

Can easily add more nodes in to the cluster DL360 G5's and deliberatley installed them in an empty rack

john banks

Run it again after a reboot and now it is 38s (same on repeating it). This time one core was >90% and the other nearly idle.

The first time that ran 1:10 had about 80% on one core and the other was at about 20%.

David_Wallis

you could play with affinity and setting the priority but I doubt it would gain much.. recoding superpi would produce better results..

Wonder if our cluster could be made to do that

MJW

I could probably calculate the value of Pi to a million decimal places in my head quicker than my PC could do it !

john banks

15s on my just built Wolfdale (E8400). Not overclocked it yet

My e-***** has just quadrupled in length

J4CKO

iTrader: (1)

On the kids Cheapo Tesco Medion PC, £500 six months ago

20 seconds.

Core 2 duo, 2 GB ram.

john banks

Now at 3.78 GHz, standard voltages, 12 seconds.

john banks

10 seconds

4.32GHz

J4CKO

iTrader: (1)

I predict the sound of wailing and smell of electronics smoking in the Banks household before too long

john banks

Settled on 4.24GHz in which it is stable running maximum CPU usage for an hour and gaming. CPU temp <60 C. Overclocked the 8800GT as well by 50MHz on each. It is 11 seconds at this speed on SuperPi. At that speed I can also run all the fans nice and quiet.

Plays Crysis smoothly with everything on High at 1280*768 on my projector Although the projector is only standard def and scaling it, it looks better than it does at its native 848*480.

So, quite pleased with the new system - until it melts

Shark Man

So, is the missus ever going to get back the usgae of her freezer?

john banks

Just air cooling - arctic freezer 7 pro... settled on 4GHz at 8x500FSB in the end - 11 sec Pi 1M, CPU temp 45-50C under load. I can run the fans really quiet too.

8800GT is o/c from 600/1800 to 640/2000.

Kieran_Burns

iTrader: (1)

John what mobo are you using?

I can get the CPU to go over 4GHz (got the e8400 as well) but the memory only limits to 1:1 on clock speed, so my DDR2-6400 lets me down - right now I am happily running the e8400 at 3.6GHz cos that's all the memory will let me.

john banks

Asus P5K-E. Crucial Ballistix DDR2-6400 - overclocks happily to 1000MHz at 5-5-5-15 timing, and the motherboard seems to laugh at 500MHz FSB also.

I found out that the motherboard bios reports the case rather than the core temp which is about 15C higher. I downloaded core temp and ran it on Orthos stability test.

Based on those results I am now on 445*9 (4005MHz) with the CPU core running 1.40V under load (set to 1.425 in the BIOS). CPU runs in the low 60s Celcius which I gather is sensible from my searches. It runs a little hotter running 500*8, although still stable. Extra gains from here on this cooling just result in a lot more temp for 5% performance gain - not worth it long term.

I have done more testing on the graphics card, 630 and 1960 MHz for the core and the memory. Any higher and it artifacts under load after a little whilst. The overclock of the graphics card added about 6% to the frame rate in Crysis.

Blackscooby

Mac Mini Core Du0 1.83Ghz running XP inside OSX on a virtual desktop.
34 Seconds. Didn't think that was too bad to be honest

pimmo2000

iTrader: (6)

Q6600 stock .. 20 seconds dead on.

Will over clock and try again

Shark Man

I just bit the bullet and dumped my noisy Western Digital Caviar (christ, noisiest drive I've ever had - barring the Hitachi I have at work - but at least that is noisy because its fast). All in favour of two Samsung Spinpoints which are faster and will be running on a RAID0 array (with the WD drive as an archive drive for backup).

Is there any decent benchmarking to see how much of an improvement it is? (did a quick run with HDTune before I configured them for RAID but that doesn't really show much).

May start a seperate thread to see how fast people's hard disks are

pimmo2000

iTrader: (6)

How about, to save loads of thread you just make one !

"Who has the biggest E-*****"

lol

john banks

I used SiSoft Sandra to bench mine after they were installed (Spinpoint RAID0 also) and it compared well to other raid setups (program includes results of other setups so you can measure up ). This made me happy that it was setup well.

pimmo2000

iTrader: (6)

if you have a duo.. and I'm likey to be wrong here, should you have two cores?

john banks

The reason my laptop sometimes runs over a minute and other times at 38s is that it throttles back the processor to 800MHz even when on AC power unless it seems a large processor load. SuperPI seems not to be enough, so it runs at half speed! I have been searching and tried the always on power mode but it still runs slow. There is no option on the BIOS. I am just wondering if the thing would feel a bit snappier when on AC power if I found the right setting.

T2050 Core Duo.

Suggestions?

john banks

^ Downloaded notebook hardware control and that does the trick (except it makes the fans run a lot more of course).

Edit - it has a nice setting where you can get the CPU speed to increase at lower loads when on AC rather than battery. It runs 38s in SuperPi by quickly raising the clock speed but doesn't make a lot of noise and heat the rest of the time.

Shark Man

That'll be the Intel Speed-stepping. Usually an option in the BIOS to disable it.

It can be controlled in Vista via advanced power options when you can set the minimum processor speed for both A/c and battery operation (althougth it was buggy in early versions - automatic updates quickly sorted that).

Shark Man

As the old joke goes: I have no floppy drive.

john banks

Thanks, I didn't think to boot into Vista, I installed it and hardly use it. Arguably that is because my CPU would feel like it was running at 800MHz even when it is running at 1600MHz

On my 1GB laptop I can boot into Windows and have 600MB+ RAM available, it doesn't bash the drive much at all. Vista really wants 2GB and I would need to throw the 512MB sticks away.

Ian

iTrader: (10)

thought i would drag this up.

anyone done this lately?