diff --git a/src/lava/magma/compiler/compiler.py b/src/lava/magma/compiler/compiler.py
index 1a3beec26..9937fe801 100644
--- a/src/lava/magma/compiler/compiler.py
+++ b/src/lava/magma/compiler/compiler.py
@@ -128,6 +128,8 @@ def compile(
         # ProcGroups.
         proc_group_digraph = ProcGroupDiGraphs(process, run_cfg)
         proc_groups: ty.List[ProcGroup] = proc_group_digraph.get_proc_groups()
+        # Get a flattened list of all AbstractProcesses
+        process_list = list(itertools.chain.from_iterable(proc_groups))
         channel_map = ChannelMap.from_proc_groups(proc_groups)
         proc_builders, channel_map = self._compile_proc_groups(
             proc_groups, channel_map
@@ -161,6 +163,7 @@ def compile(
 
         # Package all Builders and NodeConfigs into an Executable.
         executable = Executable(
+            process_list,
             proc_builders,
             channel_builders,
             node_configs,
diff --git a/src/lava/magma/compiler/executable.py b/src/lava/magma/compiler/executable.py
index e1d325615..42d290357 100644
--- a/src/lava/magma/compiler/executable.py
+++ b/src/lava/magma/compiler/executable.py
@@ -33,6 +33,7 @@ class Executable:
     # py_builders: ty.Dict[AbstractProcess, NcProcessBuilder]
     # c_builders: ty.Dict[AbstractProcess, CProcessBuilder]
     # nc_builders: ty.Dict[AbstractProcess, PyProcessBuilder]
+    process_list: ty.List[AbstractProcess]  # All leaf processes, flat list.
     proc_builders: ty.Dict[AbstractProcess, 'AbstractProcessBuilder']
     channel_builders: ty.List[ChannelBuilderMp]
     node_configs: ty.List[NodeConfig]
@@ -43,5 +44,5 @@ class Executable:
         ty.Iterable[AbstractChannelBuilder]] = None
 
     def assign_runtime_to_all_processes(self, runtime):
-        for p in self.proc_builders.keys():
+        for p in self.process_list:
             p.runtime = runtime
diff --git a/tests/lava/magma/runtime/test_runtime.py b/tests/lava/magma/runtime/test_runtime.py
index a70563638..6be322f45 100644
--- a/tests/lava/magma/runtime/test_runtime.py
+++ b/tests/lava/magma/runtime/test_runtime.py
@@ -27,7 +27,8 @@ def test_runtime_creation(self):
 
     def test_executable_node_config_assertion(self):
         """Tests runtime constructions with expected constraints"""
-        exe: Executable = Executable(proc_builders={},
+        exe: Executable = Executable(process_list=[],
+                                     proc_builders={},
                                      channel_builders=[],
                                      node_configs=[],
                                      sync_domains=[])
@@ -45,7 +46,8 @@ def test_executable_node_config_assertion(self):
             f"Expected type {expected_type} doesn't match {(type(runtime2))}")
         runtime2.stop()
 
-        exe1: Executable = Executable(proc_builders={},
+        exe1: Executable = Executable(process_list=[],
+                                      proc_builders={},
                                       channel_builders=[],
                                       node_configs=[],
                                       sync_domains=[])