Adding support for custom protocols

src/aiida_common_workflows/workflows/relax/abinit/generator.py

@@ -51,7 +51,9 @@ def define(cls, spec):
             (ElectronicType.METAL, ElectronicType.INSULATOR, ElectronicType.UNKNOWN)
         )
         spec.inputs['engines']['relax']['code'].valid_type = CodeType('abinit')
-        spec.inputs['protocol'].valid_type = ChoiceType(('fast', 'moderate', 'precise', 'verification-PBE-v1'))
+        spec.inputs['protocol'].valid_type = ChoiceType(
+            ('fast', 'moderate', 'precise', 'verification-PBE-v1', 'custom')
+        )
 
     def _construct_builder(self, **kwargs) -> engine.ProcessBuilder:  # noqa: PLR0912,PLR0915
         """Construct a process builder based on the provided keyword arguments.
@@ -62,6 +64,7 @@ def _construct_builder(self, **kwargs) -> engine.ProcessBuilder:  # noqa: PLR091
         structure = kwargs['structure']
         engines = kwargs['engines']
         protocol = kwargs['protocol']
+        custom_protocol = kwargs.get('custom_protocol', None)
         spin_type = kwargs['spin_type']
         relax_type = kwargs['relax_type']
         electronic_type = kwargs['electronic_type']
@@ -70,7 +73,14 @@ def _construct_builder(self, **kwargs) -> engine.ProcessBuilder:  # noqa: PLR091
         threshold_stress = kwargs.get('threshold_stress', None)
         reference_workchain = kwargs.get('reference_workchain', None)
 
-        protocol = copy.deepcopy(self.get_protocol(protocol))
+        if protocol == 'custom':
+            if custom_protocol is None:
+                raise ValueError(
+                    'the `custom_protocol` input must be provided when the `protocol` input is set to `custom`.'
+                )
+            protocol = copy.deepcopy(custom_protocol)
+        else:
+            protocol = copy.deepcopy(self.get_protocol(protocol))
         code = engines['relax']['code']
 
         pseudo_family_label = protocol.pop('pseudo_family')
@@ -87,15 +97,31 @@ def _construct_builder(self, **kwargs) -> engine.ProcessBuilder:  # noqa: PLR091
         recommended_ecut_wfc, recommended_ecut_rho = pseudo_family.get_recommended_cutoffs(
             structure=structure, stringency=cutoff_stringency, unit='Eh'
         )
+
+        # In both cases, if the protocol "hardcodes" the cutoff(s),
+        # I use that instead of the one from the pseudopotential family
+        # since it probably means the user really wanted that cutoff.
+        # I use try/except since I need to go deep into a dictionary and
+        # it is easier than using dict.get() a lot of times.
+        try:
+            protocol_ecut = protocol['base']['abinit']['parameters']['ecut']
+        except KeyError:
+            protocol_ecut = None
+
+        try:
+            protocol_pawecutdg = protocol['base']['abinit']['parameters']['pawecutdg']
+        except KeyError:
+            protocol_pawecutdg = None
+
         if pseudo_type == 'pseudo.jthxml':
             # JTH XML are PAW; we need `pawecutdg`
             cutoff_parameters = {
-                'ecut': np.ceil(recommended_ecut_wfc),
-                'pawecutdg': np.ceil(recommended_ecut_rho),
+                'ecut': protocol_ecut if protocol_ecut is not None else np.ceil(recommended_ecut_wfc),
+                'pawecutdg': protocol_pawecutdg if protocol_pawecutdg is not None else np.ceil(recommended_ecut_rho),
             }
         else:
             # All others are NC; no need for `pawecutdg`
-            cutoff_parameters = {'ecut': recommended_ecut_wfc}
+            cutoff_parameters = {'ecut': protocol_ecut if protocol_ecut is not None else np.ceil(recommended_ecut_wfc)}
 
         override = {
             'abinit': {
@@ -187,31 +213,9 @@ def _construct_builder(self, **kwargs) -> engine.ProcessBuilder:  # noqa: PLR091
                 warnings.warn(f'input magnetization per site was None, setting it to {magnetization_per_site}')
             magnetization_per_site = np.array(magnetization_per_site)
 
-            sum_is_zero = np.isclose(sum(magnetization_per_site), 0.0)
-            all_are_zero = np.all(np.isclose(magnetization_per_site, 0.0))
-            non_zero_mags = magnetization_per_site[~np.isclose(magnetization_per_site, 0.0)]
-            all_non_zero_pos = np.all(non_zero_mags > 0.0)
-            all_non_zero_neg = np.all(non_zero_mags < 0.0)
-
-            if all_are_zero:  # non-magnetic
-                warnings.warn(
-                    'all of the initial magnetizations per site are close to zero; doing a non-spin-polarized '
-                    'calculation'
-                )
-            elif (sum_is_zero and not all_are_zero) or (
-                not all_non_zero_pos and not all_non_zero_neg
-            ):  # antiferromagnetic
-                print('Detected antiferromagnetic!')
-                builder.abinit['parameters']['nsppol'] = 1  # antiferromagnetic system
-                builder.abinit['parameters']['nspden'] = 2  # scalar spin-magnetization in the z-axis
-                builder.abinit['parameters']['spinat'] = [[0.0, 0.0, mag] for mag in magnetization_per_site]
-            elif not all_are_zero and (all_non_zero_pos or all_non_zero_neg):  # ferromagnetic
-                print('Detected ferromagnetic!')
-                builder.abinit['parameters']['nsppol'] = 2  # collinear spin-polarization
-                builder.abinit['parameters']['nspden'] = 2  # scalar spin-magnetization in the z-axis
-                builder.abinit['parameters']['spinat'] = [[0.0, 0.0, mag] for mag in magnetization_per_site]
-            else:
-                raise ValueError(f'Initial magnetization {magnetization_per_site} is ambiguous')
+            builder.abinit['parameters']['nsppol'] = 2  # collinear spin-polarization
+            builder.abinit['parameters']['nspden'] = 2  # scalar spin-magnetization in the z-axis
+            builder.abinit['parameters']['spinat'] = [[0.0, 0.0, mag] for mag in magnetization_per_site]
         elif spin_type == SpinType.NON_COLLINEAR:
             if magnetization_per_site is None:
                 magnetization_per_site = get_initial_magnetization(structure)

src/aiida_common_workflows/workflows/relax/abinit/workchain.py

@@ -25,7 +25,7 @@ def get_stress(parameters):
 def get_forces(parameters):
     """Return the forces array from the given parameters node."""
     forces = orm.ArrayData()
-    forces.set_array(name='forces', array=np.array(parameters.base.attributes.get('forces')))
+    forces.set_array(name='forces', array=np.array(parameters.base.attributes.get('cart_forces')))
     return forces
 
 

src/aiida_common_workflows/workflows/relax/generator.py

@@ -17,6 +17,14 @@ def validate_inputs(value, _):
     if value.get('magnetization_per_site') is not None and value.get('fixed_total_cell_magnetization') is not None:
         return 'the inputs `magnetization_per_site` and ' '`fixed_total_cell_magnetization` are mutually exclusive.'
 
+    if value.get('protocol') == 'custom' and value.get('custom_protocol') is None:
+        return 'the `custom_protocol` input must be provided when the `protocol` input is set to `custom`.'
+
+    if value.get('protocol') != 'custom' and value.get('custom_protocol') is not None:
+        return 'the `custom_protocol` input can only be provided when the `protocol` input is set to `custom`.'
+
+    # TODO: ensure all plugins actually honor this new custom_protocol input! (only QE implemented for now)
+
 
 class OptionalRelaxFeatures(OptionalFeature):
     FIXED_MAGNETIZATION = 'fixed_total_cell_magnetization'
@@ -45,7 +53,7 @@ def define(cls, spec):
         )
         spec.input(
             'protocol',
-            valid_type=ChoiceType(('fast', 'moderate', 'precise')),
+            valid_type=ChoiceType(('fast', 'moderate', 'precise', 'custom')),
             default='moderate',
             non_db=True,
             help='The protocol to use for the automated input generation. This value indicates the level of precision '
@@ -82,6 +90,15 @@ def define(cls, spec):
             'electrons, for the site. This also corresponds to the magnetization of the site in Bohr magnetons '
             '(μB).',
         )
+        spec.input(
+            'custom_protocol',
+            valid_type=dict,
+            non_db=True,
+            required=False,
+            default=None,
+            help='A custom protocol dictionary that can be provided when the `protocol` input is set to `custom`. '
+            'In that case, this dictionary will be used to override the default protocol settings.',
+        )
         spec.input(
             'fixed_total_cell_magnetization',
             valid_type=OptionalFeatureType(float),

src/aiida_common_workflows/workflows/relax/quantum_espresso/generator.py

@@ -97,7 +97,7 @@ def define(cls, spec):
         """
         super().define(spec)
         spec.inputs['protocol'].valid_type = ChoiceType(
-            ('fast', 'balanced', 'stringent', 'moderate', 'precise', 'verification-PBE-v1')
+            ('fast', 'balanced', 'stringent', 'moderate', 'precise', 'verification-PBE-v1', 'custom')
         )
         spec.inputs['spin_type'].valid_type = ChoiceType((SpinType.NONE, SpinType.COLLINEAR))
         spec.inputs['relax_type'].valid_type = ChoiceType(
@@ -155,7 +155,15 @@ def _construct_builder(self, **kwargs) -> engine.ProcessBuilder:  # noqa: PLR091
         # Currently, the `aiida-quantumespresso` workflows will expect one of the basic protocols to be passed to the
         # `get_builder_from_protocol()` method. Here, we switch to using the default protocol for the
         # `aiida-quantumespresso` plugin and pass the local protocols as `overrides`.
-        if (
+        if protocol == 'custom':
+            custom_protocol = kwargs.get('custom_protocol', None)
+            if custom_protocol is None:
+                raise ValueError(
+                    'The `custom_protocol` input must be provided when the `protocol` input is set to `custom`.'
+                )
+            overrides = custom_protocol
+            protocol = self._default_protocol
+        elif (
             protocol not in self.process_class._process_class.get_available_protocols()
             and self.process_class._process_class._check_if_alias(protocol)
             not in self.process_class._process_class.get_available_protocols()