# WFC_GPW

Parameters for the GPW approach in Wavefunction-based Correlation methods [Edit on GitHub]

## Keywords

- CUTOFF

- EPS_FILTER

- EPS_GRID

- EPS_PGF_ORB_S

- PRINT_LEVEL

- REL_CUTOFF

## Keyword descriptions

CUTOFF: real = 3.00000000E+002

  Usage: CUTOFF 300

  The cutoff of the finest grid level in the MP2 gpw integration. [Edit on GitHub]

EPS_FILTER: real = 1.00000000E-009

  Usage: EPS_FILTER 1.0E-10

  Determines a threshold for the DBCSR based multiply (usually 10 times smaller than EPS_GRID). Normally, this EPS_FILTER determines accuracy and timing of cubic-scaling RPA calculation. [Edit on GitHub]

EPS_GRID: real = 1.00000000E-008

  Usage: EPS_GRID 1.0E-9

  Determines a threshold for the GPW based integration [Edit on GitHub]

EPS_PGF_ORB_S: real = 1.00000000E-010

  Usage: EPS_PGF_ORB_S 1.0E-10

  Screening for overlap matrix in RI. Usually, it is best to choose this parameter to be very small since the inversion of overlap matrix might be ill-conditioned. [Edit on GitHub]

PRINT_LEVEL: enum = SILENT

  Aliases: IOLEVEL

  Usage: PRINT_LEVEL HIGH

  Valid values:

  - `SILENT` Almost no output

  - `LOW` Little output

  - `MEDIUM` Quite some output

  - `HIGH` Lots of output

  - `DEBUG` Everything is written out, useful for debugging purposes only

  How much output is written by the individual groups. [Edit on GitHub]

REL_CUTOFF: real = 5.00000000E+001

  Aliases: RELATIVE_CUTOFF

  Usage: REL_CUTOFF 50

  Determines the grid at which a Gaussian is mapped. [Edit on GitHub]