changed solver to bicgstab with precon

demo/init/heat.dat.3d

@@ -8,11 +8,11 @@ heat->space->polynomial degree[0]:    1
 heat->space->dim:                     3
 heat->space->mesh:                    heatMesh
 
-heat->space->solver:                  umfpack
+heat->space->solver:                  bicgstab
 heat->space->solver->max iteration:   1000
 heat->space->solver->tolerance:       1.e-8
 heat->space->solver->info:            2
-heat->space->solver->left precon:     no
+heat->space->solver->left precon:     diag
 heat->space->solver->right precon:    no
 
 heat->space->estimator[0]:           residual

demo/init/nonlin.dat.2d

@@ -9,11 +9,11 @@ nonlin->polynomial degree[0]:   1
 nonlin->components:             1
 
 nonlin->nonlin solver:          newton
-nonlin->solver:                 umfpack
+nonlin->solver:                 bicgstab
 nonlin->solver->max iteration:  1000
 nonlin->solver->tolerance:      1.e-8
 nonlin->solver->info:           2
-nonlin->solver->left precon:    no
+nonlin->solver->left precon:    ilu
 nonlin->solver->right precon:   no
 
 nonlin->estimator[0]:              residual

demo/init/vecellipt.dat.1d

@@ -9,11 +9,11 @@ vecellipt->components:                   2
 vecellipt->polynomial degree[0]:         1
 vecellipt->polynomial degree[1]:         1
 
-vecellipt->solver:                       umfpack
+vecellipt->solver:                       bicgstab
 vecellipt->solver->max iteration:        1000
 vecellipt->solver->tolerance:            1.e-8
 vecellipt->solver->info:                 2
-vecellipt->solver->left precon:          no
+vecellipt->solver->left precon:          diag
 vecellipt->solver->right precon:         no
 
 vecellipt->estimator[0]:                 residual

demo/init/vecellipt.dat.2d

@@ -9,11 +9,11 @@ vecellipt->components:                   2
 vecellipt->polynomial degree[0]:         1
 vecellipt->polynomial degree[1]:         1
 
-vecellipt->solver:                       umfpack 
+vecellipt->solver:                       bicgstab 
 vecellipt->solver->max iteration:        1000
 vecellipt->solver->tolerance:            1.e-8
 vecellipt->solver->info:                 2
-vecellipt->solver->left precon:          no
+vecellipt->solver->left precon:          diag
 vecellipt->solver->right precon:         no
 
 vecellipt->estimator[0]:                 residual

demo/init/vecellipt.dat.3d

@@ -9,11 +9,11 @@ vecellipt->components:                   2
 vecellipt->polynomial degree[0]:         1
 vecellipt->polynomial degree[1]:         1
 
-vecellipt->solver:                       umfpack
+vecellipt->solver:                       bicgstab
 vecellipt->solver->max iteration:        1000
 vecellipt->solver->tolerance:            1.e-8
 vecellipt->solver->info:                 2
-vecellipt->solver->left precon:          no
+vecellipt->solver->left precon:          diag
 vecellipt->solver->right precon:         no
 
 vecellipt->estimator[0]:                 residual
@@ -46,4 +46,4 @@ vecellipt->output[0]->AMDiS format: 1
 vecellipt->output[1]->filename:             output/vecellipt1.3d
 vecellipt->output[1]->ParaView format:      1 
 vecellipt->output[1]->ARH format: 1
-vecellipt->output[1]->AMDiS format: 1
\ No newline at end of file
+vecellipt->output[1]->AMDiS format: 1

demo/init/vecheat.dat.2d

@@ -10,11 +10,11 @@ vecheat->space->mesh:                        vecheatMesh
 
 vecheat->space->components:                  2
 
-vecheat->space->solver:                      umfpack 
+vecheat->space->solver:                      bicgstab 
 vecheat->space->solver->max iteration:       1000
 vecheat->space->solver->tolerance:           1.e-8
 vecheat->space->solver->info:                2
-vecheat->space->solver->left precon:         no
+vecheat->space->solver->left precon:         diag
 vecheat->space->solver->right precon:        no
 
 vecheat->space->estimator[0]:                residual

demo/init/vecheat.dat.3d

@@ -10,11 +10,11 @@ vecheat->space->mesh:                        vecheatMesh
 
 vecheat->space->components:                  2
 
-vecheat->space->solver:                      umfpack 
+vecheat->space->solver:                      bicgstab 
 vecheat->space->solver->max iteration:       1000
 vecheat->space->solver->tolerance:           1.e-8
 vecheat->space->solver->info:                2
-vecheat->space->solver->left precon:         no
+vecheat->space->solver->left precon:         diag
 vecheat->space->solver->right precon:        no
 
 vecheat->space->estimator[0]:                residual