#
DATA_DISTRIBUTION (.param)

## Keyword type

String

## Description

This keyword determines the parallelization strategy used. Available options are:

- Kpoint - only k-point parallelization will be used (best scalability)
- Gvector - only g-vector parallelization will be used (worst scalability)
- Mixed - a combination of k-point and g-vector parallelization will be used
- Default - the optimal parallelization strategy for the architecture will be used

The Default setting is appropriate in most situations.

The Kpoint option is available only when the number of
processors is a factor of the number of k-points.

The Gvector option is appropriate for calculations involving large
systems where often only one k-point is used.

The Mixed option is available when the number of processors and the
number of k-points have a common factor (for example 6 k-points and 4 processors).

The differences in the scaling properties of the different schemes dictate the number of processors that should be used. For example, a
calculation that uses 16 k-points is likely to finish faster on 4 processors (using Kpoint distribution) than on 6
processors (using Mixed distribution) and most likely faster than on 9 processors (using Gvector
distribution).

## Default

Default

## Example

DATA_DISTRIBUTION : Gvector

###### See Also:

CASTEP keyword glossary

CASTEP parameters keywords

Accelrys Materials Studio 8.0 Help: Wednesday, December 17, 2014