On Thu, Apr 10, 2014 at 02:07:40PM +0000, Lux, Jim (337C) wrote: > On 4/10/14 5:28 AM, "Piotr Król" <[email protected]> wrote: > > By the time you buy a power supply, add memory, I/o shields, vestigial > chassis, your little $50 motherboard is now a $300 computer. >
The question is if they can beat $14.7/DP GFLOPS (13GFLOPS/$192) ? > For a prototyping cluster, small size isn't often a real driver (unless > you're trying to pack it into a small box for some other reason: lunch box > beowulf clusters that fit under a plane seat). Going to a more > conventional (slightly larger) consumer oriented motherboard and an > inexpensive consumer oriented power supply might actually give you better > bang for the buck. Sure, (un)fortunately size and power consumption are very important (I think more than price - of course in reasonable boundaries). It would be great if I could run few nodes on high-end battery in future. So for example considering Jetson TK1 power consumption on about 20W I should be able to run about 4 nodes with 100W UPS lithium battery. Correct me if I introduced confusion here. For sure I have to learn a lot about power consumption and clarify this requirements. > Overclocking and cluster computing don't go together very well. Clusters > are sufficiently complex beasts that you don't need the additional > failure/flakiness/thermal management hassles that comes from overclocking. > I will remember this advice. > > > > There is unleashed performance of > >VideoCore IV GPU (24 SP GFLOPS) but there is no C compiler for that > >(only reverse engineered assembly). > > Unless you really enjoy hacking at a very low level, you want to pick > hardware for which YOU aren't responsible for making the OS and tools > work. You want to spend your time on > A) hardware assembly > B) learning how to effectively use multiple nodes and a communications > fabric Yes I'm really enjoying low level hacking I'm BIOS developer :P Unfortunately I would like to avoid hobbyist approach in this project. I'm getting hard lesson that both point A and B are most of the work when building cluster. > Hah.. If you want a real low power/high performance.. Consider the > teensy3.1, a sort of super arduino using the Freescale K20 processor based > on the ARM Cortex architecture. 30mA, runs at 72 Mhz clock rate, does a Hah ! :) This one is really nice, unfortunately it doesn't have MMU so not Linux and probably a lot of effort for adapting code for this platform would be required. Thanks, Piotr Król _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
