/[escript]/trunk/finley/test/python/SimpleSolve.py
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revision 148 by jgs, Tue Aug 23 01:24:31 2005 UTC revision 150 by jgs, Thu Sep 15 03:44:45 2005 UTC
# Line 4  import sys Line 4  import sys
4  import os  import os
5  import unittest  import unittest
6    
7  from escript.escript import *  from esys.escript import *
8  from escript.linearPDEs import *  from esys.escript.linearPDEs import *
9  from finley import finley  from esys import finley
10    
11  print "\nSimpleSolve.py"  print "\nSimpleSolve.py"
12  print "--------------"  print "--------------"
13    
14  alpha=0.07  alpha=0.7
15  error_tol=1.e-5  error_tol=1.e-5
16    
17  # generate mesh  # generate mesh
# Line 20  error_tol=1.e-5 Line 20  error_tol=1.e-5
20  # mydomain=finley.Rectangle(140,140)  # mydomain=finley.Rectangle(140,140)
21    
22  # print "\nGenerate mesh: finley.Rectangle(4,4,1)=>"  # print "\nGenerate mesh: finley.Rectangle(4,4,1)=>"
23  mydomain=finley.Rectangle(190,190,1)  mydomain=finley.Rectangle(10,10,1)
24    # mydomain=finley.Rectangle(190,190,1)
25    
26  print "\nGenerate mesh: finley.Rectangle(151,151,1)=>"  print "\nGenerate mesh: finley.Rectangle(151,151,1)=>"
27  # mydomain=finley.Rectangle(151,151,1)  # mydomain=finley.Rectangle(151,151,1)
# Line 55  print "----------------------------" Line 56  print "----------------------------"
56  print "mypde=LinearPDE( A=[[1.,0.8],[0.4,1.]], D=alpha, Y=alpha, domain=mydomain)"  print "mypde=LinearPDE( A=[[1.,0.8],[0.4,1.]], D=alpha, Y=alpha, domain=mydomain)"
57  mypde=LinearPDE(mydomain)  mypde=LinearPDE(mydomain)
58  mypde.setDebugOn()  mypde.setDebugOn()
59  mypde.setValue(A=[[1.,0.8],[0.4,1.]],D=alpha,Y=alpha)  mypde.setValue(A=[[1.,0.1],[0.04,1.]],D=alpha,Y=alpha)
60    
61  print "mypde.checkSymmetry()"  print "mypde.checkSymmetry()"
62  print mypde.checkSymmetry()  print mypde.checkSymmetry()
63    
64  print "\nIterative Solver (1)=>"  print "\nIterative Solver (1)=>"
65  # u_i=mypde.getSolution(preconditioner=ILU0,iter_max=3000)  mypde.setSolverMethod(mypde.BICGSTAB)
66  u_i=mypde.getSolution(iter_max=3000)  u_i=mypde.getSolution(verbose=True,iter_max=3000,preconditioner=mypde.ILU0)
67    
68  print "\nDirect Solver (1)=>"  print "\nDirect Solver (1)=>"
69  mypde.setSolverMethod(mypde.DIRECT)  mypde.setSolverMethod(mypde.DIRECT)
70  u_d=mypde.getSolution()  u_d=mypde.getSolution(verbose=True)
71    
72  print "\n***************************************************************"  print "\n***************************************************************"
73  error=u_ex-u_d  error=u_ex-u_d
# Line 114  mypde.setTolerance(1.e-13) Line 115  mypde.setTolerance(1.e-13)
115    
116  # mypde.setSymmetryOn() : is not woking yet!  # mypde.setSymmetryOn() : is not woking yet!
117  mypde.setSolverMethod(mypde.DIRECT)  mypde.setSolverMethod(mypde.DIRECT)
118  u_d=mypde.getSolution()  u_d=mypde.getSolution(verbose=True)
119    
120  print "\nIterative Solver (2)=>"  print "\nIterative Solver (2)=>"
121    
122  mypde.setSymmetryOn()  mypde.setSymmetryOn()
123  mypde.setSolverMethod(mypde.DEFAULT_METHOD)  mypde.setSolverMethod(mypde.ITERATIVE)
124  u_i=mypde.getSolution(iter_max=3000)  u_i=mypde.getSolution(verbose=True,iter_max=3000)
125    
126  print "\n******************************************************************"  print "\n******************************************************************"
127  error=u_ex-u_d  error=u_ex-u_d

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