dynamite.config

The dynamite._Config class is instantiated by dynamite as dynamite.config. This is the object on which one should call these functions. For example:

from dynamite import config

config.initialize(['-mfn_ncv','20'])
config.L = 24

class dynamite._Config

Package-wide configuration of dynamite.

initialize(slepc_args=None, version_check=True, gpu=None)

Initialize PETSc/SLEPc with various arguments (which would be passed on the command line for a C program).

Only the first call to this function has any effect. It is automatically called when using much of the PETSc/SLEPc functionality (including importing petsc4py.PETSc or slepc4py.SLEPc), so it must be called early (probably right after importing dynamite).

Parameters:

• slepc_args (list of str) – The arguments to SLEPc initialization.

• version_check (bool) – Whether process 0 should check for a new dynamite version on initialization. Can be set to false if the check is unnecessary or causes problems.

• gpu (bool) – Whether to run all computations using a GPU instead of the CPU.

property L

A global spin chain length that will be applied to all matrices and states, unless they are explicitly set to a different size. Is not retroactive— will not set the size for any objects that have already been created.

property shell

Whether to use standard PETSc matrices (False, default), or shell matrices (True).

property subspace

The subspace to use for all operators and states. Can also be set for individual operators and states–see dynamite.operators.Operator.subspace for details.

property gpu

Whether to run the computations on a GPU. This property is read-only. To use GPUs, initialize() must be called with gpu=True (default when built with GPU support).