PetscMallocSetCoalesce#

Use coalesced PetscMalloc() when allocating groups of objects, that is when using PetscMallocN()

Synopsis#

#include "petscsys.h"   
PetscErrorCode PetscMallocSetCoalesce(PetscBool coalesce)

Not Collective

Input Parameter#

  • coalesce - PETSC_TRUE to use coalesced malloc for multi-memory allocation.

Options Database Key#

  • -malloc_coalesce - turn coalesced PetscMallocN() on or off

Notes#

PETSc uses coalesced PetscMallocN() by default for optimized builds and not for debugging builds.

This default can be changed via the command-line option -malloc_coalesce or by calling this function.

This function can only be called immediately after PetscInitialize()

See Also#

PetscMallocA(), PetscMalloc(), PetscFree()

Level#

developer

Location#

src/sys/memory/mal.c

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Index of all manual pages