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  • Stéphane Del Pino's avatar
    Stéphane Del Pino authored
    The 'LinearSolver' class proposes mechanism to choose the used
    - library,
    - method, and
    - preconditioner
    Also one can adjust the required convergence epsilon, the maximum
    number of iterations and the verbosity.
    
    All of these options can be listed through the 'pgs' script using the
    'printLSAvailable()' builtin function.
    
    One drive the linear system solver by changing values in the
    script. For instance:
    	setLSVerbosity(true);
    	setLSEpsilon(1E-9);
    	setLSMaxIter(1000);
    	setLSLibrary("PETSc");
    	setLSMethod("LU");
    	setLSPrecond("none");
    
    Finally one can print the current options by using the
    'printLSOptions()' function.
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