DMPlexGlobalVectorLoad#

Loads on-disk vector data into a global vector

Synopsis#

#include "petscdmplex.h"   
PetscErrorCode DMPlexGlobalVectorLoad(DM dm, PetscViewer viewer, DM sectiondm, PetscSF sf, Vec vec)

Collective on DM

Input Parameters#

  • dm - The DM that represents the topology

  • viewer - The PetscViewer that represents the on-disk vector data

  • sectiondm - The DM that contains the global section on which vec is defined

  • sf - The SF that migrates the on-disk vector data into vec

  • vec - The global vector to set values of

Notes#

In general dm and sectiondm are two different objects, the former carrying the topology and the latter carrying the section, and have been given a topology name and a section name, respectively, with PetscObjectSetName(). In practice, however, they can be the same object if it carries both topology and section; in that case the name of the object is used as both the topology name and the section name.

Typical calling sequence

PetscObjectSetName((PetscObject)dm, "topologydm_name");
DMPlexTopologyLoad(dm, viewer, &sfX);
DMClone(dm, &sectiondm);
PetscObjectSetName((PetscObject)sectiondm, "sectiondm_name");
DMPlexSectionLoad(dm, viewer, sectiondm, sfX, &gsf, NULL);
DMGetGlobalVector(sectiondm, &vec);
PetscObjectSetName((PetscObject)vec, "vec_name");
DMPlexGlobalVectorLoad(dm, viewer, sectiondm, gsf, vec);
DMRestoreGlobalVector(sectiondm, &vec);
DMDestroy(&sectiondm);
DMDestroy(&dm);

See Also#

DMPlexTopologyLoad(), DMPlexSectionLoad(), DMPlexLocalVectorLoad(), DMPlexGlobalVectorView(), DMPlexLocalVectorView()

Level#

advanced

Location#

src/dm/impls/plex/plex.c


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Index of all DMPlex routines
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Index of all manual pages