Benchmarking continued: sliding performance using different BLAS implementations
03 Nov 2014Out of couriosity on how far I could tweak the performance of the sliding of semi-landmarks I also ran the benchmarks using different BLAS (Basic Linear Algebra Subprograms) implementations:
Hardware specs:
- CPU: Intel(R) Xeon(R) CPU E5-1650 v2 @ 3.50GHz (Hexacore)
- RAM: 32GB DDR3 @1600 MHz
Software:
- Ubuntu 14.04.1
- R 3.1.2
ATLAS was installed using the source package provided by Ubuntu and using the following commands to download and compile and build debian packages:
apt-get source atlas
cd atlas-3.10.1/
fakeroot debian/rules custom
OpenBLAS was simply downloaded from https://github.com/xianyi/OpenBLAS and compiled using the default options.
Now, one can switch between BLAS versions using update-alternatives.
And the winner is….
OpenBLAS, beating ATLAS at 4000 semi-landmarks by impressive 12.2 seconds:
