ABINIT Discussion Forums

Hi,

I am doing some calculations and unfortunately it exceeded the memory. To solve this issue, I set the mkmem variable equals to the number of k points in the input file as per the suggestion in the log file. But apparently, I am receiving following error:

--- !ERROR
src_file: chkvars.F90
src_line: 336
mpi_rank: 0
message: |
Found the token MKMEM in the input file.
This name is not one of the registered input variable names (see the Web list of input variables).
Action: check your input file. You likely mistyped the input variable.

Please suggest me how to resolve this issue.

Thanks in advance.

Regards,
Mawla

mkmem is now an internal variable, it's not possible to set its value in the input file.
Use paral_kgb = 1 and nkpkpt, npband, npfft to decrease the memory requirements when
the number of MPI processes is greater than the number of k-points in the IBZ

Thank you for your suggestions. I have been tweaking the npkpt, npband, and npfft parameter values to reduce the memory needs. But I was wondering if there exists any straightforward rule or it's always such trial and error basis?