Difference between revisions of "Octave for openSUSE"

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(Pre-compiled binaries)
 
(information about images and linear algebra libraries)
Line 9: Line 9:
  
 
  zypper ar http://download.opensuse.org/repositories/science/<openSUSE version>/ Science
 
  zypper ar http://download.opensuse.org/repositories/science/<openSUSE version>/ Science
 +
zypper ref
 
  zypper in octave
 
  zypper in octave
  
There <openSUSE verion> is your version of openSUSE, for example {{codeline|openSUSE_13.1}}.
+
There <openSUSE verion> is your version of openSUSE, for example {{codeline|openSUSE_13.1}}
 +
 
 +
===Linear algebra libraries===
 +
openSUSE uses reference BLAS and LAPACK implementations by default, but ATLAS is usually much faster. You can switch it by update-alternatives mechanism:
 +
 
 +
/usr/sbin/update-alternatives --config libblas.so.3
 +
/usr/sbin/update-alternatives --config liblapack.so.3
 +
 
 +
Example:
 +
 
 +
  Selection    Path                            Priority  Status
 +
------------------------------------------------------------
 +
* 0            /usr/lib64/libblas.so.3.4.2      50        auto mode
 +
  1            /usr/lib64/atlas/libsatlas.so.3  20        manual mode
 +
  2            /usr/lib64/atlas/libtatlas.so.3  20        manual mode
 +
  3            /usr/lib64/libblas.so.3.4.2      50        manual mode
 +
 
 +
===Image export and import===
 +
GraphicsMagick++ library from openSUSE repositories was compiled with quantum depth 16 which limits reading and writing images to 16 bit. See more details on [[GraphicsMagick]] wiki page.

Revision as of 11:28, 14 March 2014

Pre-compiled binaries

Binary packages for Octave are provided by all versions of openSUSE. These are the most well-tested binaries available and should work best for most users.

zypper in octave

If you want to use install latest stable version of Octave and Octave Forge packages, you can use Science repository.

zypper ar http://download.opensuse.org/repositories/science/<openSUSE version>/ Science
zypper ref
zypper in octave

There <openSUSE verion> is your version of openSUSE, for example openSUSE_13.1

Linear algebra libraries

openSUSE uses reference BLAS and LAPACK implementations by default, but ATLAS is usually much faster. You can switch it by update-alternatives mechanism:

/usr/sbin/update-alternatives --config libblas.so.3
/usr/sbin/update-alternatives --config liblapack.so.3

Example:

  Selection    Path                             Priority   Status
------------------------------------------------------------
* 0            /usr/lib64/libblas.so.3.4.2       50        auto mode
  1            /usr/lib64/atlas/libsatlas.so.3   20        manual mode
  2            /usr/lib64/atlas/libtatlas.so.3   20        manual mode
  3            /usr/lib64/libblas.so.3.4.2       50        manual mode

Image export and import

GraphicsMagick++ library from openSUSE repositories was compiled with quantum depth 16 which limits reading and writing images to 16 bit. See more details on GraphicsMagick wiki page.