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wolfman1360
Senior Cruncher
Canada
Joined: Jan 17, 2016
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Re: Best use of an AMD Opteron 6128 HE

My one Linux box, a Dell small form factor OptiPlex 380 with a CPU from 2010 or so (see signature), runs barebones Debian (using their net install ISO) from a 16 GB USB flash drive. It's been over a year since I set it up. It's set it-and-forget-it except for summer where it overheats. The Autodock Vina work units (like Zika, Ebola, etc.) are as fast or faster than an 8th Generation CPU (Coffee Lake) on Windows!

A Ryzen (8 core?) would write more to a flash drive, but they're cheap enough that if/when the flash drive fails, it'll have been worth it. Pop in a new one and keep calm and crunch on. :)


Thanks! I may just go ahead and do this. It's a Ryzen 7 1800X, so 8 cores 16 threads. I haven't really seen it crank up on turbo core or whatnot past 3.7 GHZ, but I'm sure it would be a powerhouse cruncher under linux.

Does linux have a way to manage power profiles? Under windows, etting maximum processor usage to something like 99% brings the clock speed down around 300 MHZ or so, to around 3.4 GHZ and the fans wind down quite a lot. I think that's a small price to pay in crunching speed for longevity.

I do have a 16 GB thumb drive around here so that would be something interesting to try.
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Crunching for the betterment of human kind and the canines who will always be our best friends.
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Dark Angel
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Australia
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Re: Best use of an AMD Opteron 6128 HE

You'll probably want to consider upgrading the cooling if you want to run 16 threads, especially if you want to let the system make use of the Boost functionality in the processor.
My R7 2700X for example has a base clock of 3.7GHz but the combination of thermal throttling holding things down and the single threaded nature of the WCG work pushing it up it's currently running at 3.93GHz at 66C CPU temp running all 16 threads. I'm in the process of upgrading the cooling solution to bring that temperature down some more.
Here's some information regarding the CPU frequency governors in Linux
https://wiki.archlinux.org/index.php/CPU_frequency_scaling#Scaling_governors
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