More speed more power

Jack's Projects and Notes

Sunday, June 5. 2005

More speed more power

I finally got around to dusting off all my extra comps (save the box of laptops) and clustering it all up. Time was still an issue, so I simply used the bootable CD distribuation “BCCD” (bootable cluster CD). It’s quite handy. After booting, I had 7 working nodes, 1 desktop, 1 file server, 1 RAID array, and 3 non-working nodes. All on 1 UPS. ALl on one socket.

Woops.

Things were running fine fore a few days before I ran any apps, ie with load averages of 0.01. I though that it would be good to test how the temperture rose after 24 hours of cpu use. So I hacked up a little perl script to hog CPU, and launched it 7 times. I looked at the CPU use histogram… It slowly migrated out across the nodes, until on went the UPS, out went the circuit breaker, out went the lights.

I suppose it makes sense, but I previously didn’t realize how much more power a running CPU pulls than an idle one.
Posted by Jack at 23:00 | Comments (0) | Trackbacks (0)

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Email me:

jack {@} crepinc.com

Recent Projects:

Analog HF Transmitter
Audi ECU Reverse Engineering
Dual DAC QAM Modulator
FPGA QAM Modulator
Geiger Counter
Gyro-Stabilized DSLR Platform
Hybrid Rocket Engines
Turbocharger Controller
WWVB Rx and Tx

Older Projects:

Balancing Bot
Capacitor Array
CNC Mill
DCIR Renderer
Electric Gokart
Hovercraft
Low Alt. Temp. Model
Shopping Cart Locker
Trebuchet

My Twitter occasionally shows projects I'm working on.

My GitHub has code from a few projects on it.

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