# fix_modify AtC kernel_bandwidth command

## Syntax

    fix_modify <AtC fixID> kernel_bandwidth <value>

-   AtC fixID = ID of [fix atc](fix_atc) instance
-   kernel_bandwidth = name of the AtC sub-command
-   value = new bandwidth value

## Examples

``` LAMMPS
fix_modify AtC kernel_bandwidth 8
```

## Description

Sets a maximum parallel bandwidth for the kernel functions during
parallel communication. If the command is not issued, the default will
be to assume the bandwidth of the kernel matrix corresponds to the
number of sampling locations.

## Restrictions

Only is used if kernel functions are being used.

## Related AtC commands

-   [fix_modify AtC command overview](atc_fix_modify)

## Default

Number of sample locations.