source: issm/trunk/src/m/solvers/jacobicgoptions.py@ 13395

#module imports {{{
from pairoptions import *
from petscversion  import *
#}}}
def jacobicgoptions(*args):
        #ASMOPTIONS - return Additive Shwartz Method with Jacobi preconditioner petsc options
        #
        #   Usage:
        #      options=jacobicgoptions;
        
        #retrieve options provided in varargin
        arguments=pairoptions(*args) 
        
        options=[['mat_type','aij'],['ksp_type','cg'],['ksp_max_it',100],['ksp_rtol',1e-15]];

        #now, go through our arguments, and write over default options.
        for i in range(len(arguments.list)):
                arg1=arguments.list[i][0]
                arg2=arguments.list[i][1]
                found=0;
                for j in range(len(options)):
                        joption=options[j][0]
                        if joption==arg1:
                                joption[1]=arg2;
                                options[j]=joption;
                                found=1;
                                break
                if not found:
                        #this option did not exist, add it: 
                        options.append([arg1,arg2])
        return options