New virial dataset (#313)

src/metatrain/experimental/alchemical_model/tests/__init__.py

@@ -4,8 +4,8 @@
 
 DATASET_PATH = str(Path(__file__).parents[5] / "tests/resources/qm9_reduced_100.xyz")
 
-ALCHEMICAL_DATASET_PATH = str(
-    Path(__file__).parents[5] / "tests/resources/alchemical_reduced_10.xyz"
+QM9_DATASET_PATH = str(
+    Path(__file__).parents[5] / "tests/resources/qm9_reduced_100.xyz"
 )
 
 DEFAULT_HYPERS = get_default_hypers("experimental.alchemical_model")

src/metatrain/experimental/alchemical_model/tests/test_torch_alchemical_compatibility.py

@@ -17,22 +17,22 @@
 from metatrain.utils.data import DatasetInfo, TargetInfo, TargetInfoDict, read_systems
 from metatrain.utils.neighbor_lists import get_system_with_neighbor_lists
 
-from . import ALCHEMICAL_DATASET_PATH, MODEL_HYPERS
+from . import MODEL_HYPERS, QM9_DATASET_PATH
 
 
 random.seed(0)
 np.random.seed(0)
 torch.manual_seed(0)
 
-systems = read_systems(ALCHEMICAL_DATASET_PATH)
+systems = read_systems(QM9_DATASET_PATH)
 systems = [system.to(torch.float32) for system in systems]
 nl_options = NeighborListOptions(
     cutoff=5.0,
     full_list=True,
 )
 systems = [get_system_with_neighbor_lists(system, [nl_options]) for system in systems]
 
-frames = read(ALCHEMICAL_DATASET_PATH, ":")
+frames = read(QM9_DATASET_PATH, ":")
 dataset = AtomisticDataset(
     frames,
     target_properties=["energies", "forces"],

src/metatrain/experimental/pet/tests/__init__.py

@@ -1,5 +1,3 @@
 from pathlib import Path
 
-DATASET_PATH = str(
-    Path(__file__).parents[5] / "tests/resources/alchemical_reduced_10.xyz"
-)
+DATASET_PATH = str(Path(__file__).parents[5] / "tests/resources/carbon_reduced_100.xyz")

src/metatrain/utils/logging.py

@@ -72,7 +72,7 @@ def __init__(
         for name, metrics_dict in zip(names, initial_metrics):
             for key, value in metrics_dict.items():
                 target_name = key.split(" ", 1)[0]
-                if "loss" in key:
+                if key == "loss":
                     # losses will be printed in scientific notation
                     continue
                 unit = self._get_units(target_name)
@@ -110,7 +110,8 @@ def log(
             logging_string = f"Epoch {epoch:4}"
 
         for name, metrics_dict in zip(self.names, metrics):
-            for key, value in metrics_dict.items():
+            for key in _sort_metric_names(metrics_dict.keys()):
+                value = metrics_dict[key]
 
                 new_key = key
                 if key != "loss":  # special case: not a metric associated with a target
@@ -122,7 +123,7 @@ def log(
                     logging_string += f", {new_key}: "
                 else:
                     logging_string += f", {name} {new_key}: "
-                if "loss" in key:  # print losses with scientific notation
+                if key == "loss":  # print losses with scientific notation
                     logging_string += f"{value:.3e}"
                 else:
                     unit = self._get_units(target_name)
@@ -264,3 +265,15 @@ def get_cli_input(argv: Optional[List[str]] = None) -> str:
     # Add additional quotes for connected arguments.
     arguments = [f'"{arg}"' if " " in arg else arg for arg in argv[1:]]
     return f"{program_name} {' '.join(arguments)}"
+
+
+def _sort_metric_names(name_list):
+    name_list = list(name_list)
+    sorted_name_list = []
+    if "loss" in name_list:
+        # loss goes first
+        loss_index = name_list.index("loss")
+        sorted_name_list.append(name_list.pop(loss_index))
+    # then alphabetical order
+    sorted_name_list.extend(sorted(name_list))
+    return sorted_name_list

tests/cli/__init__.py

@@ -7,6 +7,7 @@
 
 DATASET_PATH_QM9 = RESOURCES_PATH / "qm9_reduced_100.xyz"
 DATASET_PATH_ETHANOL = RESOURCES_PATH / "ethanol_reduced_100.xyz"
+DATASET_PATH_CARBON = RESOURCES_PATH / "carbon_reduced_100.xyz"
 EVAL_OPTIONS_PATH = RESOURCES_PATH / "eval.yaml"
 MODEL_PATH = RESOURCES_PATH / "model-32-bit.pt"
 MODEL_PATH_64_BIT = RESOURCES_PATH / "model-64-bit.ckpt"

tests/cli/test_train_model.py

@@ -16,6 +16,7 @@
 from metatrain.utils.errors import ArchitectureError
 
 from . import (
+    DATASET_PATH_CARBON,
     DATASET_PATH_ETHANOL,
     DATASET_PATH_QM9,
     MODEL_PATH_64_BIT,
@@ -510,3 +511,43 @@ def test_train_issue_290(monkeypatch, tmp_path):
     options["test_set"] = 0.85
 
     train_model(options)
+
+
+def test_train_log_order(caplog, monkeypatch, tmp_path, options):
+    """Tests that the log is always printed in the same order for forces
+    and virials."""
+
+    monkeypatch.chdir(tmp_path)
+    shutil.copy(DATASET_PATH_CARBON, "carbon_reduced_100.xyz")
+
+    options["architecture"]["training"]["num_epochs"] = 5
+    options["architecture"]["training"]["log_interval"] = 1
+
+    options["training_set"]["systems"]["read_from"] = str(DATASET_PATH_CARBON)
+    options["training_set"]["targets"]["energy"]["read_from"] = str(DATASET_PATH_CARBON)
+    options["training_set"]["targets"]["energy"]["key"] = "energy"
+    options["training_set"]["targets"]["energy"]["forces"] = {
+        "key": "force",
+    }
+    options["training_set"]["targets"]["energy"]["virial"] = True
+
+    caplog.set_level(logging.INFO)
+    train_model(options)
+    log_test = caplog.text
+
+    # find all the lines that have "Epoch" in them; these are the lines that
+    # contain the training metrics
+    epoch_lines = [line for line in log_test.split("\n") if "Epoch" in line]
+
+    # check that "training forces RMSE" comes before "training virial RMSE"
+    # in every line
+    for line in epoch_lines:
+        force_index = line.index("training forces RMSE")
+        virial_index = line.index("training virial RMSE")
+        assert force_index < virial_index
+
+    # same for validation
+    for line in epoch_lines:
+        force_index = line.index("validation forces RMSE")
+        virial_index = line.index("validation virial RMSE")
+        assert force_index < virial_index