NECI contains automated tracking of memory usage. This enables output statistics to indicate which memory uses are dominating during a calculation.
The MemoryManager module keeps track of all units of memory, and
assigns a tag value to each of them. It is the responsibility of the
developer to store this tag, and pass it when the memory is deallocated.
This tag is an integer.
Memory should always be allocated using error checking. That is, an allocate statement should always be passed an error value as follows
integer, allocatable :: arr1(:)
real(dp), allocatable :: arr2(:,:)
integer :: ierr
allocate(arr1(10), arr2(20, 30), stat=ierr)
This value will be zero if the allocation was successful, and non-zero otherwise. The memory logging routines check this value, and report an error if the memory allocation failed.
Memory is logged using the functions LogMemAlloc and LogMemDealloc.