GEOPY-2526: Improve parallel creation of 1D simulations

simpeg/dask/electromagnetics/frequency_domain/simulation.py

@@ -282,7 +282,7 @@ def compute_J(self, m, f=None):
     for block_derivs_chunks, addresses_chunks in zip(
         blocks_receiver_derivs, blocks, strict=True
     ):
-        Jmatrix = parallel_block_compute(
+        parallel_block_compute(
             simulation,
             m,
             Jmatrix,
@@ -301,7 +301,10 @@ def compute_J(self, m, f=None):
     gc.collect()
     if self.store_sensitivities == "disk":
         del Jmatrix
-        Jmatrix = array.from_zarr(self.sensitivity_path)
+        return array.from_zarr(self.sensitivity_path)
+
+    if client:
+        return client.gather(Jmatrix)
 
     return Jmatrix
 
@@ -367,11 +370,9 @@ def parallel_block_compute(
         count += n_cols
 
     if client:
-        client.gather(block_delayed)
+        return client.gather(block_delayed)
     else:
-        compute(block_delayed)
-
-    return Jmatrix
+        return compute(block_delayed)
 
 
 Sim.compute_J = compute_J

simpeg/dask/electromagnetics/static/resistivity/simulation.py

@@ -181,6 +181,10 @@ def getSourceTerm(self):
             )
             blocks = []
             for ind in indices:
+
+                if len(ind) == 0:
+                    continue
+
                 blocks.append(
                     client.submit(source_eval, sim, future_list, ind, workers=worker)
                 )

simpeg/directives/_save_geoh5.py

@@ -52,20 +52,20 @@ def __init__(
         )
 
     def initialize(self):
-        if self.open_geoh5:
-            self._geoh5.open(mode="r+")
+        if self.open_geoh5 and not getattr(self._workspace, "_geoh5", None):
+            self._workspace.open(mode="r+")
 
         self.write(0)
 
         if self.close_geoh5:
-            self._geoh5.close()
+            self._workspace.close()
 
     def endIter(self):
-        if self.open_geoh5:
-            self._geoh5.open(mode="r+")
+        if self.open_geoh5 and not getattr(self._workspace, "_geoh5", None):
+            self._workspace.open(mode="r+")
         self.write(self.opt.iter)
         if self.close_geoh5:
-            self._geoh5.close()
+            self._workspace.close()
 
     def get_names(
         self, component: str, channel: str, iteration: int
@@ -127,7 +127,7 @@ def h5_object(self, entity: ObjectBase):
             )
 
         self._h5_object = entity.uid
-        self._geoh5 = entity.workspace
+        self._workspace = entity.workspace
 
         if getattr(entity, "n_cells", None) is not None:
             self.association = "CELL"
@@ -263,7 +263,7 @@ def write(self, iteration: int, values: list[np.ndarray] = None):  # flake8: noq
         prop = self.apply_transformations(prop)
 
         # Save results
-        with fetch_active_workspace(self._geoh5, mode="r+") as w_s:
+        with fetch_active_workspace(self._workspace, mode="r+") as w_s:
             h5_object = w_s.get_entity(self.h5_object)[0]
             for cc, component in enumerate(self.components):
                 if component not in self.data_type:
@@ -386,7 +386,7 @@ def joint_index(self, value: list[int] | None):
 class SaveLogFilesGeoH5(BaseSaveGeoH5):
 
     def write(self, iteration: int, **_):
-        dirpath = Path(self._geoh5.h5file).parent
+        dirpath = Path(self._workspace.h5file).parent
         filepath = dirpath / "SimPEG.out"
 
         if iteration == 0:
@@ -412,9 +412,9 @@ def save_log(self):
         """
         Save iteration metrics to comments.
         """
-        dirpath = Path(self._geoh5.h5file).parent
+        dirpath = Path(self._workspace.h5file).parent
 
-        with fetch_active_workspace(self._geoh5, mode="r+") as w_s:
+        with fetch_active_workspace(self._workspace, mode="r+") as w_s:
             h5_object = w_s.get_entity(self.h5_object)[0]
 
             for file in ["SimPEG.out", "SimPEG.log", "ChiFactors.log"]:
@@ -452,7 +452,7 @@ def write(self, iteration: int, **_):
         """
         Save the model to the geoh5 file
         """
-        with fetch_active_workspace(self._geoh5, mode="r+") as w_s:
+        with fetch_active_workspace(self._workspace, mode="r+") as w_s:
             h5_object = w_s.get_entity(self.h5_object)[0]
 
             for component in self.components:
@@ -560,7 +560,7 @@ def write(self, iteration: int, values: list[np.ndarray] | None = None):
         petro_model = self.get_values(values)
         petro_model = self.apply_transformations(petro_model).flatten()
         channel_name, _ = self.get_names("petrophysics", "", iteration)
-        with fetch_active_workspace(self._geoh5, mode="r+") as w_s:
+        with fetch_active_workspace(self._workspace, mode="r+") as w_s:
             h5_object = w_s.get_entity(self.h5_object)[0]
             data = h5_object.add_data(
                 {