Enable load results manually from any available iteration

src/ert/gui/tools/load_results/load_results_panel.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from pathlib import Path
+
 from qtpy.QtCore import Qt, Signal
 from qtpy.QtWidgets import QFormLayout, QMessageBox, QTextEdit, QWidget
 
@@ -63,7 +65,8 @@ def __init__(self, facade: LibresFacade, notifier: ErtNotifier):
             self._iterations_model,  # type: ignore
             "load_results_manually/iterations",
         )
-        self._iterations_field.setValidator(IntegerArgument(from_value=0))
+
+        self._iterations_field.setValidator(self._iter_validator)
         self._iterations_field.setObjectName("iterations_field_lrm")
         layout.addRow("Iteration to load:", self._iterations_field)
 
@@ -76,6 +79,14 @@ def __init__(self, facade: LibresFacade, notifier: ErtNotifier):
 
         self.setLayout(layout)
 
+    @property
+    def _iter_validator(self) -> IntegerArgument:
+        cur_run_path = self.readCurrentRunPath().replace("<IENS>", "0")
+        curent_iter = 0
+        while Path(cur_run_path.replace("<ITER>", str(curent_iter))).exists():
+            curent_iter += 1
+        return IntegerArgument(from_value=0, to_value=curent_iter - 1)
+
     def readCurrentRunPath(self) -> str:
         current_ensemble = self._notifier.current_ensemble_name
         run_path = self._facade.run_path

src/ert/libres_facade.py

@@ -145,6 +145,7 @@ def load_from_forward_model(
             ),
             realisations,
             ensemble=ensemble,
+            iteration=iteration,
         )
         nr_loaded = self._load_from_run_path(
             self.config.model_config.num_realizations,

src/ert/run_arg.py

@@ -29,8 +29,10 @@ def create_run_arguments(
     runpaths: Runpaths,
     active_realizations: Union[List[bool], npt.NDArray[np.bool_]],
     ensemble: Ensemble,
+    iteration: Optional[int] = None,
 ) -> List[RunArg]:
-    iteration = ensemble.iteration
+    if iteration is None:
+        iteration = ensemble.iteration
     run_args = []
     runpaths.set_ert_ensemble(ensemble.name)
     paths = runpaths.get_paths(range(len(active_realizations)), iteration)