Message boards :
Number crunching :
Raspberry Pi 2
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Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14649 Credit: 200,643,578 RAC: 874 |
There's plenty of discussion at Einstein. Parallella, Raspberry Pi, FPGA & All That Stuff Yes, they've got the P1 2 running with the NEON accelerator and a bespoke wisdom for FFTW optimisation. |
Claggy Send message Joined: 5 Jul 99 Posts: 4654 Credit: 47,537,079 RAC: 4 |
I've been compiling Setiathome applications for my Parallellas, Pi Model B, and Pi 2 Model B, the applications that work date to before the Android applications, and because of that aren't fast compared to the Android Seti apps, or as comparable as the Einstein Android/Linux BRP apps, full length Wu's take two and a half to three days, compared to about a day and a half for a couple of my Android hosts, part of that is the increased clock speed on my Android hosts, and part of it is the generic code the Pi's and Parallellas use. While you can compile apps from the current code base, with a compilation workaround, the apps that i've compiled don't produce the correct output, that's the same with apps from the Debian repository code base too, Part of the problem is that the code for the Arm apps is for the soft-float calling convention, while the Parallella and Pi's OS use the hard-float calling convention. Claggy |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
The Raspberry Pi B apparently has "single precision performance of 0.065 GFLOPS" under Raspbian & the Raspberry Pi 2 is said to have "6x more processing power". I'm not sure if the "6x" is figured using all 4 cores or just 1, but 6x would put it at 0.39 GFLOPS of CPU processing power. Which is just a bit slower than a Pentium M @ 1.7GHz, but using a lot less power. The GPU is listed at 24 GFLOPS & it looks to be the same GPU as the previous generation. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
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