PetscMemoryGetCurrentUsage#

Returns the current resident set size (memory used) for the program.

Synopsis#

#include "petscsys.h" 
PetscErrorCode PetscMemoryGetCurrentUsage(PetscLogDouble *mem)

Not Collective

Output Parameter#

  • mem - memory usage in bytes

Options Database Key#

  • -memory_view - Print memory usage at end of run

  • -log_view_memory - Display memory information for each logged event

  • -malloc_log - Activate logging of memory usage

Notes#

The memory usage reported here includes all Fortran arrays (that may be used in application-defined sections of code). This routine thus provides a more complete picture of memory usage than PetscMallocGetCurrentUsage() for codes that employ Fortran with hardwired arrays.

This value generally never decreases during a run even if the application has freed much of its memory that it allocated

See Also#

PetscMallocGetMaximumUsage(), PetscMemoryGetMaximumUsage(), PetscMallocGetCurrentUsage(), PetscMemorySetGetMaximumUsage(), PetscMemoryView()

Level#

intermediate

Location#

src/sys/memory/mem.c

Examples#

src/ts/tutorials/ex11.c

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