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 malloc on or off

Notes

PETSc uses coalesced malloc 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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