PetscErrorCode RunTest(void)
{
PetscInt N = 100;
PetscBool draw = PETSC_FALSE;
PetscReal rnorm;
Mat A;
Vec b,x,r;
KSP ksp;
PC pc;
PetscErrorCode ierr;
PetscFunctionBegin;
ierr = PetscOptionsGetInt(0,"-N",&N,NULL);CHKERRQ(ierr);
ierr = PetscOptionsGetBool(0,"-draw",&draw,NULL);CHKERRQ(ierr);
ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr);
ierr = MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,N,N);CHKERRQ(ierr);
ierr = MatSetType(A,MATPYTHON);CHKERRQ(ierr);
ierr = MatPythonSetType(A,"example1.py:Laplace1D");CHKERRQ(ierr);
ierr = MatSetUp(A);CHKERRQ(ierr);
ierr = MatGetVecs(A,&x,&b);CHKERRQ(ierr);
ierr = VecSet(b,1);CHKERRQ(ierr);
ierr = KSPCreate(PETSC_COMM_WORLD,&ksp);CHKERRQ(ierr);
ierr = KSPSetType(ksp,KSPPYTHON);CHKERRQ(ierr);
ierr = KSPPythonSetType(ksp,"example1.py:ConjGrad");CHKERRQ(ierr);
ierr = KSPGetPC(ksp,&pc);CHKERRQ(ierr);
ierr = PCSetType(pc,PCPYTHON);CHKERRQ(ierr);
ierr = PCPythonSetType(pc,"example1.py:Jacobi");CHKERRQ(ierr);
ierr = KSPSetOperators(ksp,A,A);CHKERRQ(ierr);
ierr = KSPSetFromOptions(ksp);CHKERRQ(ierr);
ierr = KSPSolve(ksp,b,x);CHKERRQ(ierr);
ierr = VecDuplicate(b,&r);CHKERRQ(ierr);
ierr = MatMult(A,x,r);CHKERRQ(ierr);
ierr = VecAYPX(r,-1,b);CHKERRQ(ierr);
ierr = VecNorm(r,NORM_2,&rnorm);CHKERRQ(ierr);
ierr = PetscPrintf(PETSC_COMM_WORLD,"error norm = %g\n",rnorm);CHKERRQ(ierr);
if (draw) {
ierr = VecView(x,PETSC_VIEWER_DRAW_WORLD);CHKERRQ(ierr);
ierr = PetscSleep(2);CHKERRQ(ierr);
}
ierr = VecDestroy(&x);CHKERRQ(ierr);
ierr = VecDestroy(&b);CHKERRQ(ierr);
ierr = VecDestroy(&r);CHKERRQ(ierr);
ierr = MatDestroy(&A);CHKERRQ(ierr);
ierr = KSPDestroy(&ksp);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
#include <petsc/private/fortranimpl.h>
#include <petscksp.h>
#if defined(PETSC_HAVE_FORTRAN_CAPS)
#define ksppythonsettype_ KSPPYTHONSETTYPE
#elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
#define ksppythonsettype_ ksppythonsettype
#endif
PETSC_EXTERN void PETSC_STDCALL ksppythonsettype_(KSP *ksp, CHAR name PETSC_MIXED_LEN(len),PetscErrorCode *ierr PETSC_END_LEN(len))
{
char *t;
FIXCHAR(name,len,t);
*ierr = KSPPythonSetType(*ksp,t);
FREECHAR(name,t);
}
#include <petsc/private/fortranimpl.h>
#include <petscksp.h>
#if defined(PETSC_HAVE_FORTRAN_CAPS)
#define ksppythonsettype_ KSPPYTHONSETTYPE
#elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
#define ksppythonsettype_ ksppythonsettype
#endif
PETSC_EXTERN void PETSC_STDCALL ksppythonsettype_(KSP *ksp, char* name PETSC_MIXED_LEN(len),PetscErrorCode *ierr PETSC_END_LEN(len))
{
char *t;
FIXCHAR(name,len,t);
*ierr = KSPPythonSetType(*ksp,t);if (*ierr) return;
FREECHAR(name,t);
}
