orchestration/simulators.py: add QemuIcountHost

experiments/simbricks/orchestration/simulators.py

@@ -446,6 +446,15 @@ class QemuHost(HostSim):
         return cmd
 
 
+class QemuIcountHost(QemuHost):
+    """QEMU host simulator that uses instruction counting for
+    synchronization."""
+
+    def __init__(self, node_config: NodeConfig) -> None:
+        super().__init__(node_config)
+        self.sync = True
+
+
 class Gem5Host(HostSim):
     """Gem5 host simulator."""