ParticleSorter

class hoomd.tune.ParticleSorter(trigger=200, grid=None)

Bases: Tuner

Order particles in memory to improve performance.

Parameters:

• trigger (hoomd.trigger.trigger_like) – Select the timesteps on which to sort. Defaults to a hoomd.trigger.Periodic(200) trigger.

• grid (int) – Resolution of the grid to use when sorting. The default value of None sets grid=4096 in 2D simulations and grid=256 in 3D simulations.

ParticleSorter improves simulation performance by sorting the particles in memory along a space-filling curve. This takes particles that are close in space and places them close in memory, leading to a higher rate of cache hits when computing pair potentials.

Note

New hoomd.Operations instances include a ParticleSorter constructed with default parameters.

Members inherited from AutotunedObject:

property kernel_parameters

Kernel parameters. Read more...

property is_tuning_complete

Check if kernel parameter tuning is complete. Read more...

tune_kernel_parameters()

Start tuning kernel parameters. Read more...

Members inherited from TriggeredOperation:

trigger

The trigger to activate this operation. Read more...

Members defined in ParticleSorter:

grid

Set the resolution of the space-filling curve. grid rounds up to the nearest power of 2 when set. Larger values of grid provide more accurate space-filling curves, but consume more memory (grid**D * 4 bytes, where D is the dimensionality of the system).

Type:

int