diff --git a/emu/pe.py b/emu/pe.py
--- a/emu/pe.py
+++ b/emu/pe.py
@@ -260,15 +260,27 @@
             yield self.env.timeout(1)  # EMIT cycle
             self._do_emit_new(inst, result, False, token.act_id, frame_id)
         elif inst.opcode == RoutingOp.ALLOC_REMOTE:
-            # PE-level: read target PE and act_id from frame constants
+            # PE-level: read target PE, act_id, and optional parent act_id from frame constants
+            # fref+0: target PE
+            # fref+1: target act_id
+            # fref+2: parent act_id (0 = fresh ALLOC, non-zero = ALLOC_SHARED)
             # Total: 4 cycles (dequeue + IFETCH + EXECUTE + EMIT)
             target_pe = self.frames[frame_id][inst.fref] if inst.fref < len(self.frames[frame_id]) else 0
             target_act = self.frames[frame_id][inst.fref + 1] if inst.fref + 1 < len(self.frames[frame_id]) else 0
+            parent_act = self.frames[frame_id][inst.fref + 2] if inst.fref + 2 < len(self.frames[frame_id]) else 0
+
+            if parent_act:
+                alloc_op = FrameOp.ALLOC_SHARED
+                payload = parent_act
+            else:
+                alloc_op = FrameOp.ALLOC
+                payload = 0
+
             fct = FrameControlToken(
                 target=target_pe,
                 act_id=target_act,
-                op=FrameOp.ALLOC,
-                payload=0,
+                op=alloc_op,
+                payload=payload,
             )
             self._on_event(Executed(
                 time=self.env.now, component=self._component,