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C++ DMSetFromOptions函数代码示例

本文整理汇总了C++中DMSetFromOptions函数的典型用法代码示例。如果您正苦于以下问题：C++ DMSetFromOptions函数的具体用法？C++ DMSetFromOptions怎么用？C++ DMSetFromOptions使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了DMSetFromOptions函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: DMCreateLibMesh

  void PetscDMNonlinearSolver<T>::init()
  {
    PetscErrorCode ierr;
    DM dm;
    this->PetscNonlinearSolver<T>::init();

    // Attaching a DM with the function and Jacobian callbacks to SNES.
    ierr = DMCreateLibMesh(libMesh::COMM_WORLD, this->system(), &dm); CHKERRABORT(libMesh::COMM_WORLD, ierr);
    ierr = DMSetFromOptions(dm);               CHKERRABORT(libMesh::COMM_WORLD, ierr);
    ierr = DMSetUp(dm);                        CHKERRABORT(libMesh::COMM_WORLD, ierr);
    ierr = SNESSetDM(this->_snes, dm);         CHKERRABORT(libMesh::COMM_WORLD, ierr);
    // SNES now owns the reference to dm.
    ierr = DMDestroy(&dm);                     CHKERRABORT(libMesh::COMM_WORLD, ierr);
    KSP ksp;
    ierr = SNESGetKSP (this->_snes, &ksp);     CHKERRABORT(libMesh::COMM_WORLD,ierr);

    // Set the tolerances for the iterative solver.  Use the user-supplied
    // tolerance for the relative residual & leave the others at default values
    ierr = KSPSetTolerances (ksp, this->initial_linear_tolerance, PETSC_DEFAULT,PETSC_DEFAULT, this->max_linear_iterations); CHKERRABORT(libMesh::COMM_WORLD,ierr);

    // Set the tolerances for the non-linear solver.
    ierr = SNESSetTolerances(this->_snes,
			     this->absolute_residual_tolerance,
			     this->relative_residual_tolerance,
			     this->absolute_step_tolerance,
			     this->max_nonlinear_iterations,
			     this->max_function_evaluations);
    CHKERRABORT(libMesh::COMM_WORLD,ierr);

    //Pull in command-line options
    KSPSetFromOptions(ksp);
    SNESSetFromOptions(this->_snes);
  }
开发者ID:paulovieira，项目名称:libmesh，代码行数:33，代码来源:petsc_dm_nonlinear_solver.C

示例2: CreateMesh

PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
{
  PetscInt       dim             = user->dim;
  PetscBool      interpolate     = user->interpolate;
  PetscReal      refinementLimit = user->refinementLimit;
  const char     *partitioner    = user->partitioner;
  PetscErrorCode ierr;

  PetscFunctionBeginUser;
  ierr = PetscLogEventBegin(user->createMeshEvent,0,0,0,0);CHKERRQ(ierr);
  ierr = DMPlexCreateBoxMesh(comm, dim, interpolate, dm);CHKERRQ(ierr);
  {
    DM refinedMesh     = NULL;
    DM distributedMesh = NULL;

    /* Refine mesh using a volume constraint */
    ierr = DMPlexSetRefinementLimit(*dm, refinementLimit);CHKERRQ(ierr);
    ierr = DMRefine(*dm, comm, &refinedMesh);CHKERRQ(ierr);
    if (refinedMesh) {
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = refinedMesh;
    }
    /* Distribute mesh over processes */
    ierr = DMPlexDistribute(*dm, partitioner, 0, &distributedMesh);CHKERRQ(ierr);
    if (distributedMesh) {
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = distributedMesh;
    }
  }
  ierr     = DMSetFromOptions(*dm);CHKERRQ(ierr);
  ierr     = PetscLogEventEnd(user->createMeshEvent,0,0,0,0);CHKERRQ(ierr);
  user->dm = *dm;
  PetscFunctionReturn(0);
}
开发者ID:feelpp，项目名称:debian-petsc，代码行数:34，代码来源:ex62.c

示例3: main

int main(int argc, char **argv)
{
  DM             dm;
  char           typeString[256] = {'\0'};
  PetscViewer    viewer          = NULL;
  PetscBool      flg;
  PetscErrorCode ierr;

  ierr = PetscInitialize(&argc, &argv, NULL,help);if (ierr) return ierr;
  ierr = DMCreate(PETSC_COMM_WORLD, &dm);CHKERRQ(ierr);
  ierr = PetscStrncpy(typeString,DMFOREST,256);CHKERRQ(ierr);
  ierr = PetscOptionsBegin(PETSC_COMM_WORLD,NULL,"DM Forest example options",NULL);CHKERRQ(ierr);
  ierr = PetscOptionsString("-dm_type","The type of the dm",NULL,DMFOREST,typeString,sizeof(typeString),NULL);CHKERRQ(ierr);
  ierr = PetscOptionsEnd();CHKERRQ(ierr);
  ierr = DMSetType(dm,(DMType) typeString);CHKERRQ(ierr);
  ierr = DMSetFromOptions(dm);CHKERRQ(ierr);
  ierr = DMSetUp(dm);CHKERRQ(ierr);
  ierr = PetscOptionsGetViewer(PETSC_COMM_WORLD,NULL,"-dm_view",&viewer,NULL,&flg);CHKERRQ(ierr);
  if (flg) {
    ierr = DMView(dm,viewer);CHKERRQ(ierr);
  }
  ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
  ierr = DMDestroy(&dm);CHKERRQ(ierr);
  ierr = PetscFinalize();
  return ierr;
}
开发者ID:tom-klotz，项目名称:petsc，代码行数:26，代码来源:ex1.c

示例4: petscSetupDM

void petscSetupDM (NonlinearSystem & nl) {
#if !PETSC_VERSION_LESS_THAN(3,3,0)
  PetscErrorCode  ierr;

  // Initialize the part of the DM package that's packaged with Moose; in the PETSc source tree this call would be in DMInitializePackage()
  ierr = DMMooseRegisterAll();
  CHKERRABORT(nl.comm().get(),ierr);
  // Create and set up the DM that will consume the split options and deal with block matrices.
  PetscNonlinearSolver<Number> *petsc_solver = dynamic_cast<PetscNonlinearSolver<Number> *>(nl.sys().nonlinear_solver.get());
  SNES snes = petsc_solver->snes();
  /* FIXME: reset the DM, do not recreate it anew every time? */
  DM dm = PETSC_NULL;
  ierr = DMCreateMoose(nl.comm().get(), nl, &dm);
  CHKERRABORT(nl.comm().get(),ierr);
  ierr = DMSetFromOptions(dm);
  CHKERRABORT(nl.comm().get(),ierr);
  ierr = DMSetUp(dm);
  CHKERRABORT(nl.comm().get(),ierr);
  ierr = SNESSetDM(snes,dm);
  CHKERRABORT(nl.comm().get(),ierr);
  ierr = DMDestroy(&dm);
  CHKERRABORT(nl.comm().get(),ierr);
  ierr = SNESSetUpdate(snes,SNESUpdateDMMoose);
  CHKERRABORT(nl.comm().get(),ierr);
#endif
}
开发者ID:AhmedAly83，项目名称:moose，代码行数:26，代码来源:PetscSupport.C

示例5: main

int main(int argc,char **argv)
{
  DM             dm;
  Vec            X,Y;
  PetscErrorCode ierr;
  PetscInt       dof = 10;

  ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
  ierr = PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL);CHKERRQ(ierr);
  ierr = DMDACreate3d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_STAR,-128,-128,-128,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,dof,1,NULL,NULL,NULL,&dm);CHKERRQ(ierr);
  ierr = DMSetFromOptions(dm);CHKERRQ(ierr);
  ierr = DMSetUp(dm);CHKERRQ(ierr);
  ierr = PetscMemoryTrace("DMDACreate3d        ");CHKERRQ(ierr);

  ierr = DMCreateGlobalVector(dm,&X);CHKERRQ(ierr);
  ierr = PetscMemoryTrace("DMCreateGlobalVector");
  ierr = DMCreateGlobalVector(dm,&Y);CHKERRQ(ierr);
  ierr = PetscMemoryTrace("DMCreateGlobalVector");CHKERRQ(ierr);

  ierr = VecDestroy(&X);CHKERRQ(ierr);
  ierr = VecDestroy(&Y);CHKERRQ(ierr);
  ierr = DMDestroy(&dm);CHKERRQ(ierr);
  ierr = PetscFinalize();
  return ierr;
}
开发者ID:firedrakeproject，项目名称:petsc，代码行数:25，代码来源:ex20.c

示例6: main

int main(int argc, char **argv)
{
    Mat            A;
    KSP            ksp;
    DM             shell;
    Vec            *left, *right;
    MPI_Comm       c;
    PetscErrorCode ierr;

    ierr = PetscInitialize(&argc, &argv, NULL, NULL);if (ierr) return ierr;
    c = PETSC_COMM_WORLD;

    ierr = MatCreate(c, &A); CHKERRQ(ierr);
    ierr = MatSetSizes(A, 1, 1, PETSC_DECIDE, PETSC_DECIDE); CHKERRQ(ierr);
    ierr = MatSetFromOptions(A); CHKERRQ(ierr);
    ierr = MatSetUp(A); CHKERRQ(ierr);
    ierr = KSPCreate(c, &ksp); CHKERRQ(ierr);
    ierr = KSPSetOperators(ksp, A, A); CHKERRQ(ierr);
    ierr = KSPSetFromOptions(ksp); CHKERRQ(ierr);
    ierr = DMShellCreate(c, &shell); CHKERRQ(ierr);
    ierr = DMSetFromOptions(shell); CHKERRQ(ierr);
    ierr = DMSetUp(shell); CHKERRQ(ierr);
    ierr = KSPSetDM(ksp, shell); CHKERRQ(ierr);

    ierr = KSPCreateVecs(ksp, 1, &right, 1, &left); CHKERRQ(ierr);
    ierr = VecView(right[0], PETSC_VIEWER_STDOUT_(c));CHKERRQ(ierr);
    ierr = VecDestroyVecs(1,&right); CHKERRQ(ierr);
    ierr = VecDestroyVecs(1,&left); CHKERRQ(ierr);

    ierr = DMDestroy(&shell); CHKERRQ(ierr);
    ierr = KSPDestroy(&ksp); CHKERRQ(ierr);
    ierr = MatDestroy(&A); CHKERRQ(ierr);
    PetscFinalize();
    return 0;
}
开发者ID:tom-klotz，项目名称:petsc，代码行数:35，代码来源:ex45.c

示例7: CreateMesh

PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
{
  const char    *filename = user->filename;
  PetscInt       dim      = user->dim;
  size_t         len;
  PetscErrorCode ierr;

  PetscFunctionBegin;
  ierr = PetscStrlen(filename, &len);CHKERRQ(ierr);
  if (!len) {ierr = DMPlexCreateBoxMesh(comm, dim, PETSC_TRUE, dm);CHKERRQ(ierr);}
  else      {ierr = DMPlexCreateFromFile(comm, filename, PETSC_TRUE, dm);CHKERRQ(ierr);}
  ierr = DMViewFromOptions(*dm, NULL, "-orig_dm_view");CHKERRQ(ierr);
  {
    DM distributedMesh = NULL;

    ierr = DMPlexDistribute(*dm, 0, NULL, &distributedMesh);CHKERRQ(ierr);
    if (distributedMesh) {
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = distributedMesh;
      ierr = DMViewFromOptions(*dm, NULL, "-dist_dm_view");CHKERRQ(ierr);
    }
  }
  ierr = DMSetFromOptions(*dm);CHKERRQ(ierr);
  if (user->uninterpolate) {
    DM udm = NULL;

    ierr = DMPlexUninterpolate(*dm, &udm);CHKERRQ(ierr);
    ierr = DMDestroy(dm);CHKERRQ(ierr);
    *dm  = udm;
    ierr = DMViewFromOptions(*dm, NULL, "-un_dm_view");CHKERRQ(ierr);
  }
  ierr = PetscObjectSetName((PetscObject) *dm, "Test Mesh");CHKERRQ(ierr);
  ierr = DMViewFromOptions(*dm, NULL, "-dm_view");CHKERRQ(ierr);
  PetscFunctionReturn(0);
}
开发者ID:masa-ito，项目名称:PETScToPoisson，代码行数:35，代码来源:ex14.c

示例8: CreateMesh

static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *ctx, DM *dm)
{
  PetscInt       dim         = ctx->dim;
  PetscBool      cellSimplex = ctx->cellSimplex;
  const char    *filename    = ctx->filename;
  const PetscInt cells[3]    = {1, 1, 1};
  size_t         len;
  PetscMPIInt    rank, size;
  PetscErrorCode ierr;

  PetscFunctionBegin;
  ierr = MPI_Comm_rank(comm, &rank);CHKERRQ(ierr);
  ierr = MPI_Comm_size(comm, &size);CHKERRQ(ierr);
  ierr = PetscStrlen(filename, &len);CHKERRQ(ierr);
  if (len) {ierr = DMPlexCreateFromFile(comm, filename, PETSC_TRUE, dm);CHKERRQ(ierr);}
  else     {ierr = DMPlexCreateBoxMesh(comm, dim, cellSimplex, cells, NULL, NULL, NULL, PETSC_TRUE, dm);CHKERRQ(ierr);}
  {
    DM               distributedMesh = NULL;
    PetscPartitioner part;

    ierr = DMPlexGetPartitioner(*dm, &part);CHKERRQ(ierr);
    ierr = PetscPartitionerSetFromOptions(part);CHKERRQ(ierr);

    /* Distribute mesh over processes */
    ierr = DMPlexDistribute(*dm, 0, NULL, &distributedMesh);CHKERRQ(ierr);
    if (distributedMesh) {
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = distributedMesh;
    }
  }
  ierr = PetscObjectSetName((PetscObject) *dm, "Mesh");CHKERRQ(ierr);
  ierr = DMSetFromOptions(*dm);CHKERRQ(ierr);
  ierr = DMViewFromOptions(*dm, NULL, "-dm_view");CHKERRQ(ierr);
  PetscFunctionReturn(0);
}
开发者ID:petsc，项目名称:petsc，代码行数:35，代码来源:ex2.c

示例9: CreateMesh

PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
{
  PetscInt       dim             = user->dim;
  PetscBool      interpolate     = user->interpolate;
  PetscReal      refinementLimit = user->refinementLimit;
  PetscErrorCode ierr;

  PetscFunctionBegin;
  ierr = PetscLogEventBegin(user->createMeshEvent,0,0,0,0);CHKERRQ(ierr);
  ierr = DMMeshCreateBoxMesh(comm, dim, interpolate, dm);CHKERRQ(ierr);
  {
    DM refinedMesh = PETSC_NULL;

    /* Refine mesh using a volume constraint */
    ierr = DMMeshRefine(*dm, refinementLimit, interpolate, &refinedMesh);CHKERRQ(ierr);
    if (refinedMesh) {
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = refinedMesh;
    }
  }
  ierr = PetscObjectSetName((PetscObject) *dm, "Serial Mesh");CHKERRQ(ierr);
  ierr = DMSetFromOptions(*dm);CHKERRQ(ierr);
  ierr = PetscLogEventEnd(user->createMeshEvent,0,0,0,0);CHKERRQ(ierr);
  user->dm = *dm;
  PetscFunctionReturn(0);
}
开发者ID:erdc-cm，项目名称:petsc-dev，代码行数:26，代码来源:ex3.c

示例10: CreateMesh

PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
{
  PetscInt       dim               = user->dim;
  PetscBool      refinementUniform = user->refinementUniform;
  PetscBool      cellSimplex       = user->cellSimplex;
  const char    *partitioner       = "chaco";
  PetscMPIInt    rank;
  PetscErrorCode ierr;

  PetscFunctionBegin;
  ierr = MPI_Comm_rank(comm, &rank);CHKERRQ(ierr);
  ierr = DMCreate(comm, dm);CHKERRQ(ierr);
  ierr = DMSetType(*dm, DMPLEX);CHKERRQ(ierr);
  ierr = DMPlexSetDimension(*dm, dim);CHKERRQ(ierr);
  switch(dim) {
  case 2:
    if (cellSimplex) {
      ierr = CreateSimplexHybrid_2D(comm, *dm);CHKERRQ(ierr);
    } else {
      SETERRQ(comm, PETSC_ERR_ARG_OUTOFRANGE, "Cannot make hybrid meshes for quadrilaterals");
    }
    break;
  default:
    SETERRQ1(comm, PETSC_ERR_ARG_OUTOFRANGE, "Cannot make hybrid meshes for dimension %d", dim);
  }
  {
    DM refinedMesh     = PETSC_NULL;
    DM distributedMesh = PETSC_NULL;

    /* Distribute mesh over processes */
    ierr = DMPlexDistribute(*dm, partitioner, 0, &distributedMesh);CHKERRQ(ierr);
    if (distributedMesh) {
      PetscInt cMax = PETSC_DETERMINE, fMax = PETSC_DETERMINE;

      /* Do not know how to preserve this after distribution */
      if (rank) {
        cMax = 1;
        fMax = 11;
      }
      ierr = DMPlexSetHybridBounds(distributedMesh, cMax, PETSC_DETERMINE, fMax, PETSC_DETERMINE);CHKERRQ(ierr);
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = distributedMesh;
    }
    if (refinementUniform) {
      ierr = DMPlexSetRefinementUniform(*dm, refinementUniform);CHKERRQ(ierr);
      ierr = DMRefine(*dm, comm, &refinedMesh);CHKERRQ(ierr);
      if (refinedMesh) {
        ierr = DMDestroy(dm);CHKERRQ(ierr);
        *dm  = refinedMesh;
      }
    }
  }
  ierr = PetscObjectSetName((PetscObject) *dm, "Hybrid Mesh");CHKERRQ(ierr);
  ierr = DMSetFromOptions(*dm);CHKERRQ(ierr);
  user->dm = *dm;
  PetscFunctionReturn(0);
}
开发者ID:erdc-cm，项目名称:petsc-dev，代码行数:57，代码来源:ex4.c

示例11: CreateTensorProductHybrid_2D

PetscErrorCode CreateTensorProductHybrid_2D(MPI_Comm comm, PetscInt testNum, DM *dm)
{
  DM             idm, hdm = NULL;
  DMLabel        faultLabel, hybridLabel;
  PetscInt       p;
  PetscMPIInt    rank;
  PetscErrorCode ierr;

  PetscFunctionBegin;
  ierr = MPI_Comm_rank(comm, &rank);CHKERRQ(ierr);
  if (!rank) {
    PetscInt    numPoints[2]        = {6, 2};
    PetscInt    coneSize[8]         = {4, 4, 0, 0, 0, 0, 0, 0};
    PetscInt    cones[8]            = {2, 3, 4, 5,  3, 6, 7, 4,};
    PetscInt    coneOrientations[8] = {0, 0, 0, 0,  0, 0, 0, 0};
    PetscScalar vertexCoords[12]    = {-1.0, -0.5,  0.0, -0.5,  0.0, 0.5,  -1.0, 0.5,  1.0, -0.5,  1.0, 0.5};
    PetscInt    faultPoints[2]      = {3, 4};

    ierr = DMPlexCreateFromDAG(*dm, 1, numPoints, coneSize, cones, coneOrientations, vertexCoords);CHKERRQ(ierr);
    for(p = 0; p < 2; ++p) {ierr = DMSetLabelValue(*dm, "fault", faultPoints[p], 1);CHKERRQ(ierr);}
    ierr = PetscObjectSetOptionsPrefix((PetscObject) *dm, "orig_");CHKERRQ(ierr);
    ierr = DMSetFromOptions(*dm);CHKERRQ(ierr);
    ierr = DMPlexInterpolate(*dm, &idm);CHKERRQ(ierr);
    ierr = PetscObjectSetOptionsPrefix((PetscObject) idm, "in_");CHKERRQ(ierr);
    ierr = DMSetFromOptions(idm);CHKERRQ(ierr);
    ierr = DMViewFromOptions(idm, NULL, "-dm_view");CHKERRQ(ierr);
    ierr = DMGetLabel(*dm, "fault", &faultLabel);CHKERRQ(ierr);
    ierr = DMPlexCreateHybridMesh(idm, faultLabel, NULL, &hybridLabel, NULL, NULL, &hdm);CHKERRQ(ierr);
    ierr = DMLabelDestroy(&hybridLabel);CHKERRQ(ierr);
  } else {
    PetscInt numPoints[3] = {0, 0, 0};

    ierr = DMPlexCreateFromDAG(*dm, 1, numPoints, NULL, NULL, NULL, NULL);CHKERRQ(ierr);
    ierr = DMPlexInterpolate(*dm, &idm);CHKERRQ(ierr);
    ierr = DMViewFromOptions(idm, NULL, "-in_dm_view");CHKERRQ(ierr);
    ierr = DMPlexCreateHybridMesh(idm, NULL, NULL, NULL, NULL, NULL, &hdm);CHKERRQ(ierr);
  }
  ierr = DMDestroy(&idm);CHKERRQ(ierr);
  ierr = DMDestroy(dm);CHKERRQ(ierr);
  *dm  = hdm;
  PetscFunctionReturn(0);
}
开发者ID:petsc，项目名称:petsc，代码行数:42，代码来源:ex4.c

示例12: CreateMesh

static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm)
{
  PetscErrorCode ierr;

  PetscFunctionBeginUser;
  /* Create box mesh */
  ierr = DMPlexCreateBoxMesh(comm, user->dim, user->simplex, user->cells, NULL, NULL, NULL, PETSC_TRUE, dm);CHKERRQ(ierr);
  /* Distribute mesh over processes */
  {
    DM               dmDist = NULL;
    PetscPartitioner part;

    ierr = DMPlexGetPartitioner(*dm, &part);CHKERRQ(ierr);
    ierr = PetscPartitionerSetFromOptions(part);CHKERRQ(ierr);
    ierr = DMPlexDistribute(*dm, 0, NULL, &dmDist);CHKERRQ(ierr);
    if (dmDist) {
      ierr = DMDestroy(dm);CHKERRQ(ierr);
      *dm  = dmDist;
    }
  }
  /* TODO: This should be pulled into the library */
  {
    char      convType[256];
    PetscBool flg;

    ierr = PetscOptionsBegin(comm, "", "Mesh conversion options", "DMPLEX");CHKERRQ(ierr);
    ierr = PetscOptionsFList("-dm_plex_convert_type","Convert DMPlex to another format","ex12",DMList,DMPLEX,convType,256,&flg);CHKERRQ(ierr);
    ierr = PetscOptionsEnd();
    if (flg) {
      DM dmConv;

      ierr = DMConvert(*dm,convType,&dmConv);CHKERRQ(ierr);
      if (dmConv) {
        ierr = DMDestroy(dm);CHKERRQ(ierr);
        *dm  = dmConv;
      }
    }
  }
  /* TODO: This should be pulled into the library */
  ierr = DMLocalizeCoordinates(*dm);CHKERRQ(ierr);

  ierr = PetscObjectSetName((PetscObject) *dm, "Mesh");CHKERRQ(ierr);
  ierr = DMSetApplicationContext(*dm, user);CHKERRQ(ierr);
  ierr = DMSetFromOptions(*dm);CHKERRQ(ierr);
  ierr = DMViewFromOptions(*dm, NULL, "-dm_view");CHKERRQ(ierr);
  /* TODO: Add a hierachical viewer */
  if (user->spectral) {
    PetscInt  planeDir[2]   = {0,  1};
    PetscReal planeCoord[2] = {0., 1.};

    ierr = CreateSpectralPlanes(*dm, 2, planeDir, planeCoord, user);CHKERRQ(ierr);
  }
  PetscFunctionReturn(0);
}
开发者ID:petsc，项目名称:petsc，代码行数:54，代码来源:ex13.c

示例13: PETScExternalSolverCreate

PetscErrorCode
PETScExternalSolverCreate(MPI_Comm comm, TS * ts)
{
  DM da;

  PetscErrorCode ierr;

  PetscFunctionBeginUser;
  /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     Create distributed array (DMDA) to manage parallel grid and vectors
  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
  ierr = DMDACreate2d(comm,
                      DM_BOUNDARY_NONE,
                      DM_BOUNDARY_NONE,
                      DMDA_STENCIL_STAR,
                      11,
                      11,
                      PETSC_DECIDE,
                      PETSC_DECIDE,
                      1,
                      1,
                      NULL,
                      NULL,
                      &da);
  CHKERRQ(ierr);
  ierr = DMSetFromOptions(da);
  CHKERRQ(ierr);
  ierr = DMSetUp(da);
  CHKERRQ(ierr);

  /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     Create timestepping solver context
     - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
  ierr = TSCreate(comm, ts);
  CHKERRQ(ierr);
  ierr = TSSetProblemType(*ts, TS_NONLINEAR);
  CHKERRQ(ierr);
  ierr = TSSetType(*ts, TSBEULER);
  CHKERRQ(ierr);
  ierr = TSSetDM(*ts, da);
  CHKERRQ(ierr);
  ierr = DMDestroy(&da);
  CHKERRQ(ierr);
  ierr = TSSetIFunction(*ts, NULL, FormIFunction, nullptr);
  CHKERRQ(ierr);
  /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
   Set Jacobian evaluation routine
  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
  ierr = TSSetIJacobian(*ts, NULL, NULL, FormIJacobian, NULL);
  CHKERRQ(ierr);

  PetscFunctionReturn(0);
}
开发者ID:jwpeterson，项目名称:moose，代码行数:53，代码来源:PETScDiffusionFDM.C

示例14: CreateMesh

static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *newdm)
{
  PetscInt       dim         = user->dim;
  PetscBool      cellSimplex = user->cellSimplex;
  PetscErrorCode ierr;

  PetscFunctionBegin;
  switch (dim) {
  case 2:
    if (cellSimplex) {
      ierr = CreateSimplex_2D(comm, newdm);CHKERRQ(ierr);
    } else {
      ierr = CreateQuad_2D(comm, newdm);CHKERRQ(ierr);
    }
    break;
  case 3:
    if (cellSimplex) {
      ierr = CreateSimplex_3D(comm, newdm);CHKERRQ(ierr);
    } else {
      ierr = CreateHex_3D(comm, newdm);CHKERRQ(ierr);
    }
    break;
  default:
    SETERRQ1(comm, PETSC_ERR_ARG_OUTOFRANGE, "Cannot make meshes for dimension %d", dim);
  }
  if (user->refinementLimit > 0.0) {
    DM rdm;
    const char *name;

    ierr = DMPlexSetRefinementUniform(*newdm, PETSC_FALSE);CHKERRQ(ierr);
    ierr = DMPlexSetRefinementLimit(*newdm, user->refinementLimit);CHKERRQ(ierr);
    ierr = DMRefine(*newdm, PETSC_COMM_SELF, &rdm);CHKERRQ(ierr);
    ierr = PetscObjectGetName((PetscObject) *newdm, &name);CHKERRQ(ierr);
    ierr = PetscObjectSetName((PetscObject)    rdm,  name);CHKERRQ(ierr);
    ierr = DMDestroy(newdm);CHKERRQ(ierr);
    *newdm = rdm;
  }
  if (user->interpolate) {
    DM idm = NULL;
    const char *name;

    ierr = DMPlexInterpolate(*newdm, &idm);CHKERRQ(ierr);
    ierr = PetscObjectGetName((PetscObject) *newdm, &name);CHKERRQ(ierr);
    ierr = PetscObjectSetName((PetscObject)    idm,  name);CHKERRQ(ierr);
    ierr = DMPlexCopyCoordinates(*newdm, idm);CHKERRQ(ierr);
    ierr = DMDestroy(newdm);CHKERRQ(ierr);
    *newdm = idm;
  }
  ierr = DMSetFromOptions(*newdm);CHKERRQ(ierr);
  PetscFunctionReturn(0);
}
开发者ID:tom-klotz，项目名称:petsc，代码行数:51，代码来源:ex9.c

示例15: DMLibMeshCreateDomainDecompositionDM

PetscErrorCode DMLibMeshCreateDomainDecompositionDM(DM dm, PetscInt dnumber, PetscInt* dsizes, char*** dblocklists, DM* ddm)
{
  PetscErrorCode ierr;
  PetscBool islibmesh;
  PetscFunctionBegin;
  PetscValidHeaderSpecific(dm,DM_CLASSID,1);
  ierr = PetscObjectTypeCompare((PetscObject)dm, DMLIBMESH,&islibmesh);
  if(!islibmesh) SETERRQ2(((PetscObject)dm)->comm, PETSC_ERR_ARG_WRONG, "Got DM oftype %s, not of type %s", ((PetscObject)dm)->type_name, DMLIBMESH);
  if(dnumber < 0) SETERRQ1(((PetscObject)dm)->comm, PETSC_ERR_ARG_WRONG, "Negative number %D of decomposition parts", dnumber);
  PetscValidPointer(ddm,5);
  DM_libMesh *dlm = (DM_libMesh *)(dm->data);
  ierr = DMCreate(((PetscObject)dm)->comm, ddm); CHKERRQ(ierr);
  ierr = DMSetType(*ddm, DMLIBMESH);             CHKERRQ(ierr);
  DM_libMesh *ddlm = (DM_libMesh *)((*ddm)->data);
  ddlm->sys = dlm->sys;
  ddlm->varids   = dlm->varids; 
  ddlm->varnames = dlm->varnames; 
  ddlm->blockids   = dlm->blockids; 
  ddlm->blocknames = dlm->blocknames; 
  ddlm->decomposition = new(std::vector<std::set<unsigned int> >);
  ddlm->decomposition_type = DMLIBMESH_DOMAIN_DECOMPOSITION;
  if(dnumber) {
    for(PetscInt d = 0; d < dnumber; ++d) {
      if(dsizes[d] < 0) SETERRQ2(((PetscObject)dm)->comm, PETSC_ERR_ARG_WRONG, "Negative size %D of decomposition part %D", dsizes[d],d);
      ddlm->decomposition->push_back(std::set<unsigned int>());
      for(PetscInt b = 0; b < dsizes[d]; ++b) {
	std::string bname(dblocklists[d][b]);
	std::map<std::string, unsigned int>::const_iterator bit = dlm->blockids->find(bname);
	if(bit == dlm->blockids->end()) 
	  SETERRQ3(((PetscObject)dm)->comm, PETSC_ERR_ARG_WRONG, "Block %D on the %D-th list with name %s is not owned by this DM", b, d, dblocklists[d][b]);
	unsigned int bid = bit->second;
	(*ddlm->decomposition)[d].insert(bid);
      }
    }
  }
  else { /* Empty splits indicate default: split all blocks with one per split. */
    PetscInt d = 0;
    for(std::map<std::string, unsigned int>::const_iterator bit = ddlm->blockids->begin(); bit != ddlm->blockids->end(); ++bit) {
      ddlm->decomposition->push_back(std::set<unsigned int>());
      unsigned int bid = bit->second;
      std::string bname = bit->first;
      (*ddlm->decomposition)[d].insert(bid);
      ++d;
    }
  }
  ierr = DMLibMeshSetUpName_Private(*ddm); CHKERRQ(ierr);
  ierr = DMSetFromOptions(*ddm);           CHKERRQ(ierr);
  ierr = DMSetUp(*ddm);                    CHKERRQ(ierr);
  PetscFunctionReturn(0);
}
开发者ID:mikegraham，项目名称:libmesh，代码行数:50，代码来源:petscdmlibmesh.C


注：本文中的DMSetFromOptions函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。