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by ber0tech
Mon Aug 01, 2016 6:58 pm
Forum: Raspbian
Topic: Raspistill not working in docker container
Replies: 2
Views: 3044

Re: Raspistill not working in docker container

The camera module needs access to additional devices that are not available by default. Try the following: docker run --device=/dev/vcsm --device=/dev/vchiq ... or to allow everything (not recommended) docker run --privileged ... See https://docs.docker.com/engine/reference/run/#/runtime-privilege-a...
by ber0tech
Mon Jul 07, 2014 10:10 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

try to run via /home/pi/mpich-install/bin/mpiexec if that exists
by ber0tech
Mon Jul 07, 2014 10:01 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

I'm getting the same error message when trying to run a xhpl binary that is linked against mpich2 but the mpiexec binary is from openmpi. Try the following to see if the libraries and mpiexec fit together.

Code: Select all

ldd xhpl
which mpiexec
by ber0tech
Mon Jul 07, 2014 9:11 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

Did you use the same MPI version for compiling and running xhpl?
by ber0tech
Sun Mar 03, 2013 1:40 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

Mini HowTo: Linpack HPL on Raspberry Pi Install additional packages and their dependencies: sudo apt-get install libatlas-base-dev libmpich2-dev gfortran The Linpack HPL source code can be found here: http://www.netlib.org/benchmark/hpl/hpl-2.1.tar.gz Extract the tar file and create a makefile base...
by ber0tech
Fri Feb 22, 2013 5:55 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

Great! Below some results for 1 and 2 nodes.
For comparison only: My Intel laptop with gcc: 80 GFlop/s

Code: Select all

Nodes   CPUfreq.[MHz] Rmax[MFlop/s]
-----------------------------------
1       700           280
1       900           379
2       700           523
2       900           699
by ber0tech
Sun Feb 17, 2013 3:35 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

I prefer Slackware on my RPI. I think Slackware is perfect for such a device because of it's simplicity and purity. Although it is not optimised for the RPI hardware (e.g.“soft floating point” ABI vs. “hard floating point” ABI) I haven't seen any real application that runs faster on Raspbian than on...
by ber0tech
Wed Feb 13, 2013 6:41 am
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

I got 2.761e-01 Gflops. But the question is: What is the expected peak performance of the RPI ? From the Linpack FAQ: http://www.netlib.org/utk/people/JackDongarra/faq-linpack.html The theoretical peak performance is determined by counting the number of floating-point additions and multiplications (...
by ber0tech
Tue Feb 12, 2013 6:02 pm
Forum: Networking and servers
Topic: Bramble HPL (High-Performance Linpack Benchmark) results
Replies: 27
Views: 16667

Re: Bramble HPL (High-Performance Linpack Benchmark) results

On a single RPI I'm getting only 276 MFLOPS using this config: $ cat HPL.dat HPLinpack benchmark input file Innovative Computing Laboratory, University of Tennessee HPL.out output file name (if any) 6 device out (6=stdout,7=stderr,file) 1 # of problems sizes (N) 5040 Ns 1 # of NBs 168 NBs 0 PMAP pro...

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