ajout ex29

[GMRES2stage.git] / code / ex49.c

diff --git a/code/ex49.c b/code/ex49.c
index b875dd3aecef485cb850f1bbd7f08fd23beda96f..260effb9e89fe2f438d89e050e97652e04f3245d 100644 (file)
--- a/code/ex49.c
+++ b/code/ex49.c
@@ -88,7 +88,7 @@ int KrylovMinimize(Mat A, Vec b, Vec x) {
   //Variables
 
   PetscScalar  gamma, alpha, oldgamma, beta;
-  PetscReal norm=20, Eprecision=1e-8, cgprec=1e-40;     
+  PetscReal norm=20, Eprecision=1e-6, cgprec=1e-40;     
   PetscInt giter=0, ColS=8, col=0, Emaxiter=50000000, iter=0, iterations=15, Iiter=0;
   PetscErrorCode ierr;
   PetscScalar T1, T2;
@@ -265,7 +265,7 @@ int KrylovMinimizeLSQR(Mat A, Vec b, Vec x) {
   //Variables
 
   PetscScalar  alpha, beta;
-  PetscReal norm=20, Eprecision=1e-8, tol=1e-40;     
+  PetscReal norm=20, Eprecision=1e-6, tol=1e-40;     
   PetscInt giter=0, ColS=8, col=0, Emaxiter=50000000, iter=0, iterations=15, Iiter=0;
   PetscErrorCode ierr;
   PetscScalar T1, T2;
@@ -1420,11 +1420,11 @@ static PetscErrorCode solve_elasticity_2d(PetscInt mx,PetscInt my)
   ierr = DMLocalToGlobalBegin(da_prop,l_properties,ADD_VALUES,properties);CHKERRQ(ierr);
   ierr = DMLocalToGlobalEnd(da_prop,l_properties,ADD_VALUES,properties);CHKERRQ(ierr);
 
-  ierr = PetscOptionsGetBool(NULL,"-no_view",&no_view,NULL);CHKERRQ(ierr);
+  /*  ierr = PetscOptionsGetBool(NULL,"-no_view",&no_view,NULL);CHKERRQ(ierr);
   if (!no_view) {
     ierr = DMDAViewCoefficientsGnuplot2d(da_prop,properties,"Coeffcients for elasticity eqn.","properties");CHKERRQ(ierr);
     ierr = DMDACoordViewGnuplot2d(elas_da,"mesh");CHKERRQ(ierr);
-  }
+   }*/
 
   /* Generate a matrix with the correct non-zero pattern of type AIJ. This will work in parallel and serial */
   ierr = DMSetMatType(elas_da,MATAIJ);CHKERRQ(ierr);
@@ -1464,7 +1464,7 @@ static PetscErrorCode solve_elasticity_2d(PetscInt mx,PetscInt my)
  ierr = KSPSetFromOptions(ksp_E);CHKERRQ(ierr);
 
    PetscScalar T1,T2;
-    ierr = KSPSetTolerances(ksp_E, 1e-9, 1e-9, PETSC_DEFAULT, 50000000); CHKERRQ(ierr);
+    ierr = KSPSetTolerances(ksp_E, 1e-7, 1e-7, PETSC_DEFAULT, 50000000); CHKERRQ(ierr);
     T1 = MPI_Wtime();
 
     ierr = KSPSolve(ksp_E,ff,XX);CHKERRQ(ierr);
@@ -1538,7 +1538,7 @@ static PetscErrorCode solve_elasticity_2d(PetscInt mx,PetscInt my)
     ierr = KSPSolve(ksp_E,f,X);CHKERRQ(ierr);
   }
 
-  if (!no_view) {ierr = DMDAViewGnuplot2d(elas_da,X,"Displacement solution for elasticity eqn.","X");CHKERRQ(ierr);}
+  //  if (!no_view) {ierr = DMDAViewGnuplot2d(elas_da,X,"Displacement solution for elasticity eqn.","X");CHKERRQ(ierr);}
   ierr = KSPDestroy(&ksp_E);CHKERRQ(ierr);
 
   ierr = VecDestroy(&X);CHKERRQ(ierr);
@@ -1566,6 +1566,12 @@ int main(int argc,char **args)
   ierr = PetscOptionsGetInt(NULL,"-mx",&mx,NULL);CHKERRQ(ierr);
   ierr = PetscOptionsGetInt(NULL,"-my",&my,NULL);CHKERRQ(ierr);
 
+
+  PetscMPIInt size;
+  MPI_Comm_size(PETSC_COMM_WORLD,&size);
+  PetscPrintf(PETSC_COMM_WORLD,"Number of processors = %d\n",size);
+
+
   ierr = solve_elasticity_2d(mx,my);CHKERRQ(ierr);
 
   ierr = PetscFinalize();CHKERRQ(ierr);