deepmd.infer.deep_eval

Module Contents

Classes

DeepEvalBackend	Low-level Deep Evaluator interface.
DeepEval	High-level Deep Evaluator interface.

class deepmd.infer.deep_eval.DeepEvalBackend(model_file: str, output_def: deepmd.dpmodel.output_def.ModelOutputDef, *args: List[Any], auto_batch_size: bool | int | deepmd.utils.batch_size.AutoBatchSize = True, neighbor_list: ase.neighborlist.NewPrimitiveNeighborList | None = None, **kwargs: Dict[str, Any])

Bases: abc.ABC

Low-level Deep Evaluator interface.

Backends should inherbit implement this interface. High-level interface will be built on top of this.

Parameters:

model_filePath

The name of the frozen model file.

*argslist

Positional arguments.

auto_batch_sizebool or int or AutoBatchSize, default: True

If True, automatic batch size will be used. If int, it will be used as the initial batch size.

neighbor_listase.neighborlist.NewPrimitiveNeighborList, optional

The ASE neighbor list class to produce the neighbor list. If None, the neighbor list will be built natively in the model.

**kwargsdict

Keyword arguments.

abstract property model_type: DeepEval

The the evaluator of the model type.

_OUTDEF_DP2BACKEND: ClassVar[dict]

abstract eval(coords: numpy.ndarray, cells: numpy.ndarray, atom_types: numpy.ndarray, atomic: bool = False, fparam: numpy.ndarray | None = None, aparam: numpy.ndarray | None = None, **kwargs: Dict[str, Any]) → Dict[str, numpy.ndarray]

Evaluate the energy, force and virial by using this DP.

Parameters:

coords

The coordinates of atoms. The array should be of size nframes x natoms x 3

cells

The cell of the region. If None then non-PBC is assumed, otherwise using PBC. The array should be of size nframes x 9

atom_types

The atom types The list should contain natoms ints

atomic

Calculate the atomic energy and virial

fparam

The frame parameter. The array can be of size : - nframes x dim_fparam. - dim_fparam. Then all frames are assumed to be provided with the same fparam.

aparam

The atomic parameter The array can be of size : - nframes x natoms x dim_aparam. - natoms x dim_aparam. Then all frames are assumed to be provided with the same aparam. - dim_aparam. Then all frames and atoms are provided with the same aparam.

**kwargs

Other parameters

Returns:

output_dictdict

The output of the evaluation. The keys are the names of the output variables, and the values are the corresponding output arrays.

abstract get_rcut() → float

Get the cutoff radius of this model.

abstract get_ntypes() → int

Get the number of atom types of this model.

abstract get_type_map() → List[str]

Get the type map (element name of the atom types) of this model.

abstract get_dim_fparam() → int

Get the number (dimension) of frame parameters of this DP.

abstract get_dim_aparam() → int

Get the number (dimension) of atomic parameters of this DP.

abstract eval_descriptor(coords: numpy.ndarray, cells: numpy.ndarray, atom_types: numpy.ndarray, fparam: numpy.ndarray | None = None, aparam: numpy.ndarray | None = None, efield: numpy.ndarray | None = None, mixed_type: bool = False, **kwargs: Dict[str, Any]) → numpy.ndarray

Evaluate descriptors by using this DP.

Parameters:

coords

The coordinates of atoms. The array should be of size nframes x natoms x 3

cells

The cell of the region. If None then non-PBC is assumed, otherwise using PBC. The array should be of size nframes x 9

atom_types

The atom types The list should contain natoms ints

fparam

The frame parameter. The array can be of size : - nframes x dim_fparam. - dim_fparam. Then all frames are assumed to be provided with the same fparam.

aparam

The atomic parameter The array can be of size : - nframes x natoms x dim_aparam. - natoms x dim_aparam. Then all frames are assumed to be provided with the same aparam. - dim_aparam. Then all frames and atoms are provided with the same aparam.

efield

The external field on atoms. The array should be of size nframes x natoms x 3

mixed_type

Whether to perform the mixed_type mode. If True, the input data has the mixed_type format (see doc/model/train_se_atten.md), in which frames in a system may have different natoms_vec(s), with the same nloc.

Returns:

descriptor

Descriptors.

abstract eval_typeebd() → numpy.ndarray

Evaluate output of type embedding network by using this model.

Returns:

np.ndarray

The output of type embedding network. The shape is [ntypes, o_size], where ntypes is the number of types, and o_size is the number of nodes in the output layer.

Raises:

KeyError

If the model does not enable type embedding.

_check_mixed_types(atom_types: numpy.ndarray) → bool

Check if atom types of all frames are the same.

Traditional descriptors like se_e2_a requires all the frames to have the same atom types.

Parameters:

atom_typesnp.ndarray

The atom types of all frames, in shape nframes * natoms.

abstract get_sel_type() → List[int]

Get the selected atom types of this model.

Only atoms with selected atom types have atomic contribution to the result of the model. If returning an empty list, all atom types are selected.

abstract get_numb_dos() → int

Get the number of DOS.

get_has_efield()

Check if the model has efield.

get_has_spin()

Check if the model has spin atom types.

abstract get_ntypes_spin() → int

Get the number of spin atom types of this model. Only used in old implement.

class deepmd.infer.deep_eval.DeepEval(model_file: str, *args: List[Any], auto_batch_size: bool | int | deepmd.utils.batch_size.AutoBatchSize = True, neighbor_list: ase.neighborlist.NewPrimitiveNeighborList | None = None, **kwargs: Dict[str, Any])

Bases: abc.ABC

High-level Deep Evaluator interface.

The specific DeepEval, such as DeepPot and DeepTensor, should inherit from this class. This class provides a high-level interface on the top of the low-level interface.

Parameters:

model_filePath

The name of the frozen model file.

*argslist

Positional arguments.

auto_batch_sizebool or int or AutoBatchSize, default: True

If True, automatic batch size will be used. If int, it will be used as the initial batch size.

neighbor_listase.neighborlist.NewPrimitiveNeighborList, optional

The ASE neighbor list class to produce the neighbor list. If None, the neighbor list will be built natively in the model.

**kwargsdict

Keyword arguments.

abstract property output_def: deepmd.dpmodel.output_def.ModelOutputDef

Returns the output variable definitions.

property has_efield: bool

Check if the model has efield.

property has_spin: bool

Check if the model has spin.

get_rcut() → float

Get the cutoff radius of this model.

get_ntypes() → int

Get the number of atom types of this model.

get_type_map() → List[str]

Get the type map (element name of the atom types) of this model.

get_dim_fparam() → int

Get the number (dimension) of frame parameters of this DP.

get_dim_aparam() → int

Get the number (dimension) of atomic parameters of this DP.

_get_natoms_and_nframes(coords: numpy.ndarray, atom_types: numpy.ndarray, mixed_type: bool = False) → Tuple[int, int]

_expande_atype(atype: numpy.ndarray, nframes: int, mixed_type: bool)

eval_descriptor(coords: numpy.ndarray, cells: numpy.ndarray | None, atom_types: numpy.ndarray, fparam: numpy.ndarray | None = None, aparam: numpy.ndarray | None = None, mixed_type: bool = False, **kwargs: Dict[str, Any]) → numpy.ndarray

Evaluate descriptors by using this DP.

Parameters:

coords

The coordinates of atoms. The array should be of size nframes x natoms x 3

cells

The cell of the region. If None then non-PBC is assumed, otherwise using PBC. The array should be of size nframes x 9

atom_types

The atom types The list should contain natoms ints

fparam

The frame parameter. The array can be of size : - nframes x dim_fparam. - dim_fparam. Then all frames are assumed to be provided with the same fparam.

aparam

The atomic parameter The array can be of size : - nframes x natoms x dim_aparam. - natoms x dim_aparam. Then all frames are assumed to be provided with the same aparam. - dim_aparam. Then all frames and atoms are provided with the same aparam.

efield

The external field on atoms. The array should be of size nframes x natoms x 3

mixed_type

Whether to perform the mixed_type mode. If True, the input data has the mixed_type format (see doc/model/train_se_atten.md), in which frames in a system may have different natoms_vec(s), with the same nloc.

Returns:

descriptor

Descriptors.

eval_typeebd() → numpy.ndarray

Evaluate output of type embedding network by using this model.

Returns:

np.ndarray

The output of type embedding network. The shape is [ntypes, o_size], where ntypes is the number of types, and o_size is the number of nodes in the output layer.

Raises:

KeyError

If the model does not enable type embedding.

See also

deepmd.tf.utils.type_embed.TypeEmbedNet

The type embedding network.

Examples

Get the output of type embedding network of graph.pb:

>>> from deepmd.infer import DeepPotential
>>> dp = DeepPotential("graph.pb")
>>> dp.eval_typeebd()

_standard_input(coords, cells, atom_types, fparam, aparam, mixed_type)

get_sel_type() → List[int]

Get the selected atom types of this model.

Only atoms with selected atom types have atomic contribution to the result of the model. If returning an empty list, all atom types are selected.

_get_sel_natoms(atype) → int

get_ntypes_spin() → int

Get the number of spin atom types of this model. Only used in old implement.