X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/GMRES2stage.git/blobdiff_plain/704a29e1a3accbeb491a424bc8e02cb8a54dd3b2..b0a581c5855a3dda28df994ccde7482913b7be1e:/code/ex49.c

diff --git a/code/ex49.c b/code/ex49.c
index 76f2067..b93b5c6 100644
--- 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;
@@ -152,13 +152,14 @@ int KrylovMinimize(Mat A, Vec b, Vec x) {
 
   //Initializations
   //  ierr = KSPGMRESSetRestart(ksp, 16); CHKERRQ(ierr);
-  ierr = KSPSetTolerances(ksp, 1e-13, 1e-13, PETSC_DEFAULT, 16); CHKERRQ(ierr);
+  ierr = KSPSetTolerances(ksp, 1e-13, 1e-13, PETSC_DEFAULT, 30); CHKERRQ(ierr);
   ierr = KSPSetInitialGuessNonzero(ksp, PETSC_TRUE); CHKERRQ(ierr);
 
 
 
   //GMRES WITH MINIMIZATION
   T1 = MPI_Wtime();
+  ierr = KSPSetUp(ksp);CHKERRQ(ierr);
   while(giter<Emaxiter && norm>Eprecision ){
     for(col=0; col<ColS  &&  norm>Eprecision; col++){
 
@@ -265,7 +266,7 @@ 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;
@@ -342,7 +343,7 @@ int KrylovMinimizeLSQR(Mat A, Vec b, Vec x) {
 
   //Initializations
   //  ierr = KSPGMRESSetRestart(ksp, 16); CHKERRQ(ierr);
-  ierr = KSPSetTolerances(ksp, 1e-13, 1e-13, PETSC_DEFAULT, 16); CHKERRQ(ierr);
+  ierr = KSPSetTolerances(ksp, 1e-13, 1e-13, PETSC_DEFAULT, 30); CHKERRQ(ierr);
   ierr = KSPSetInitialGuessNonzero(ksp, PETSC_TRUE); CHKERRQ(ierr);
 
 
@@ -350,6 +351,7 @@ int KrylovMinimizeLSQR(Mat A, Vec b, Vec x) {
 
   //GMRES WITH MINIMIZATION
   T1 = MPI_Wtime();
+  ierr = KSPSetUp(ksp);CHKERRQ(ierr);
   while(giter<Emaxiter && norm>Eprecision ){
     for(col=0; col<ColS  &&  norm>Eprecision; col++){
 
@@ -1445,9 +1447,9 @@ static PetscErrorCode solve_elasticity_2d(PetscInt mx,PetscInt my)
 
 
   ierr = KSPCreate(PETSC_COMM_WORLD,&ksp_E);CHKERRQ(ierr);
-  ierr = KSPSetOptionsPrefix(ksp_E,"elas_");CHKERRQ(ierr);  /* elasticity */
+  // ierr = KSPSetOptionsPrefix(ksp_E,"elas_");CHKERRQ(ierr);  /* elasticity */
 
-  ierr = PetscOptionsGetBool(NULL,"-use_nonsymbc",&use_nonsymbc,&flg);CHKERRQ(ierr);
+  //ierr = PetscOptionsGetBool(NULL,"-use_nonsymbc",&use_nonsymbc,&flg);CHKERRQ(ierr);
   /* solve */
   if (!use_nonsymbc) {
     Mat        AA;
@@ -1461,15 +1463,26 @@ static PetscErrorCode solve_elasticity_2d(PetscInt mx,PetscInt my)
     ierr = KSPSetOperators(ksp_E,AA,AA);CHKERRQ(ierr);
     ierr = KSPSetFromOptions(ksp_E);CHKERRQ(ierr);
 
- ierr = KSPSetFromOptions(ksp_E);CHKERRQ(ierr);
 
    PetscScalar T1,T2;
-    ierr = KSPSetTolerances(ksp_E, 1e-9, 1e-9, PETSC_DEFAULT, 50000000); CHKERRQ(ierr);
-    /*    T1 = MPI_Wtime();
+    ierr = KSPSetTolerances(ksp_E, 1e-7, 1e-7, PETSC_DEFAULT, 50000000); CHKERRQ(ierr);
 
+
+    PC             pc;
+    KSPGetPC(ksp_E, &pc);
+    PCType         type;
+    PCGetType(pc, &type);
+
+    PetscPrintf(PETSC_COMM_WORLD, "PC TYPE %s  \n", type);
+    KSPGetType(ksp_E,&type);
+    PetscPrintf(PETSC_COMM_WORLD, "SOLVER TYPE %s  \n", type);
+
+
+    T1 = MPI_Wtime();
+ ierr = KSPSetUp(ksp_E);CHKERRQ(ierr);
     ierr = KSPSolve(ksp_E,ff,XX);CHKERRQ(ierr);
     T2 = MPI_Wtime();
-     */
+    
     Mat A;
     Vec sol;
     PetscScalar norm;