Tips and tricks: Difference between revisions
→Fixed mistakes
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*sparse matrix tricks | *sparse matrix tricks | ||
*tricks relying on fortran indexing | *tricks relying on fortran indexing | ||
====Other references==== | |||
*MATLAB array manipulation tips and tricks by Peter Acklam: http://home.online.no/~pjacklam/matlab/doc/mtt/index.html | |||
*The MathWorks: Code Vectorization Guide: http://www.mathworks.com/support/tech-notes/1100/1109.html | |||
[[Category:Tips and tricks]] | |||
===Changing BLAS=== | ===Changing BLAS=== | ||
Many Octave functions are wrappers to optimized numerical libraries, notably BLAS and ATLAS. It is possible to achieve impressive performance | |||
Many Octave functions are wrappers to optimized numerical libraries, notably BLAS and ATLAS. It is possible to achieve impressive performance gains by simply using a library tuned to your platform. One example is using OpenBLAS to replace the default BLAS implementation ([http://www.stat.cmu.edu/~nmv/2013/07/09/for-faster-r-use-openblas-instead-better-than-atlas-trivial-to-switch-to-on-ubuntu/ further details]). | |||
On Linux, this just takes a few commands: | On Linux, this just takes a few commands: | ||
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and select the openblas option. | and select the openblas option. | ||