seldon-help Mailing List for Seldon

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Hello, 
Seldon is no longer updated in Sourceforge, its repository has been moved to GitLab. I propose you to download the following file : 
https://gitlab.com/marc.durufle/montjoie/repository/archive.zip 
It includes Montjoie and Seldon, the main interest of this archive is that it includes Makefile and instructions about using the code. 
Once you have unzipped this file, you go to the folder MONTJOIE (and not SELDON). In this folder, you have a file Makefile.Test 
that you can copy to Makefile : 

cp Makefile.Test Makefile 

In the file Makefile, you have to change the folders where the used libraries are installed. For computation of eigenvalues, a good configuration is to have 

USE_BLAS := YES (Blas, Cblas, and Lapack libraries are specified in the section ifeq($(USE_BLAS), YES) of the Makefile) 
USE_MUMPS := YES (you modify CHEMUMPS_SEQ if Mumps has been compiled in sequential, CHEMUMPS_PAR for a parallel execution) 
USE_ARPACK := YES ( Arpack is assumed to be compiled in the folder $(EXTERNAL)/Arpack, so if EXTERNAL should be modified) 
USE_FEAST := YES (Feast is assumed to be compiled in the folder $(EXTERNAL)/Feast 
USE_CHOLMOD := YES (Cholmod is a part of SuiteSparse, you have to modify CHE_SUITE_SPARSE) 
USE_METIS := YES (You have to modify CHEMETIS) 

If you want to compile by your-self all these libraries, you can have a look at INSTALL.txt, I have placed some instructions. I forgot to place instructions for 
Feast, but it can be downloaded. Moreover this library is not mandatory, as a first step you can put USE_FEAST := NO and only use Arpack eigensolver. 
Once, you have compiled these libraries, and updated your Makefile, you can try to compile by typing : 

make 

It will try to compile the file src/Program/Unit/Seldon/eigenvalue_feast.cc. It is an unitary test for the interface with feast eigenvalue solver. Of course it will 
not work if Feast has not been installed. You can change the file to compile by modifying the LSTBIN variable in the Makefile. If you specify: 

LSTBIN = src/Program/Unit/Seldon/eigenvalue_solver_test.cc 

It will test the interface with Arpack. However, this program is using some matrices that are stored in files. These files are not present 
in the repository because they are too large. But, I test frequently this unitary test, so it works with these files. 

Finally, I would like to say that Seldon is a template library, so you can not compile separately each .cxx file as you tried to do it. It does not work this way. 
Usually all the files are included when you put 

#include "Algebra/MontjoieAlgebra.hxx" 

using namespace Montjoie; 

If you look at Algebra/MontjoieAlgebra.hxx, you will see that it includes all the needed Seldon files. If you want to compile Seldon as a library, and then 
only include header files (and not all the .cxx files), you have to put: 

OPTIMIZATION := FASTER 

in the Makefile. It will compile all the .cpp files contained in lib/Compil. And when you will do 

#include "Algebra/MontjoieAlgebra.hxx" 

using namespace Montjoie; 

Only header files should be included. As you can see, for the two modes of compilation, you include the same file (MontjoieAlgebra.hxx). Is you want to recompile the library, you have to type 

make cleanlib 

The object files .o will be removed. 
I hope you will succeed in using eigenvalue solvers, I know that it is using a lot of external libraries, but it is the case for all eigenvalue solvers. Eigenvalue solvers rely on direct solvers, which 
rely on Blas/Lapack and a renumbering library. That is the reason why there are many libraries to install and link with. Let me know if you encounter issues during the installation. 
Best regards. 

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seldon-help Mailing List for Seldon

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