diff --git a/sisyphus/localengine.py b/sisyphus/localengine.py
index 706579f..fddd08a 100644
--- a/sisyphus/localengine.py
+++ b/sisyphus/localengine.py
@@ -157,20 +157,26 @@ def enough_free_resources(self, rqmt):
                 return False
         return True
 
-    def reserve_resources(self, rqmt):
+    def reserve_resources(self, rqmt, selected_devices=None):
         self.free_resources = {key: free - rqmt.get(key, 0) for key, free in self.free_resources.items()}
         for key, max_available in self.max_resources.items():
             free = self.free_resources[key]
             assert 0 <= free <= max_available
+
         # reserve specific GPUs
-        selected_devices = []
-        for name, free in self.available_gpus.items():
-            if len(selected_devices) == rqmt.get("gpu", 0):
-                return ",".join(selected_devices)
-            if free:
-                self.available_gpus[name] = False
-                selected_devices.append(name)
-        assert len(selected_devices) == rqmt.get("gpu", 0)
+        if selected_devices is not None:
+            if selected_devices != "":
+                for name in selected_devices.split(","):
+                    self.available_gpus[name] = False
+        else:
+            selected_devices = []
+            for name, free in self.available_gpus.items():
+                if len(selected_devices) == rqmt.get("gpu", 0):
+                    break
+                if free:
+                    self.available_gpus[name] = False
+                    selected_devices.append(name)
+            assert len(selected_devices) == rqmt.get("gpu", 0)
         return ",".join(selected_devices)
 
     def release_resources(self, rqmt, selected_devices):
@@ -301,23 +307,19 @@ def try_to_recover_task(self, task, task_id):
             rqmt = d['requested_resources']
             logpath = os.path.relpath(task.path(gs.JOB_LOG_ENGINE))
             call_with_id = task.get_worker_call(task_id)
-            call_with_id += ['--redirect_output']
             name = task.task_name()
             task_name = task.name()
             task_instance = TaskQueueInstance(call_with_id, logpath, rqmt, name, task_name, task_id)
 
-            if call_with_id != process.cmdline()[1:]:
+            if call_with_id[1:] != process.cmdline()[1:]:
                 logging.debug('Job changed, ignore this job: %i %s %s' % (pid, process.cmdline(), task_instance.call))
                 return False
 
-            if os.path.abspath(os.getcwd()) != process.cwd():
-                logging.debut('Job changed, ignore this job: %i %s %s' % (pid, os.getcwd(), process.cwd()))
-                return False
-
             with self.running_tasks as running_tasks:
                 name = (task_instance.name, task_id)
-                running_tasks[name] = (process, task_instance, "")
-                self.reserve_resources(rqmt)
+                used_gpus = process.environ().get("CUDA_VISIBLE_DEVICES", "")
+                running_tasks[name] = (process, task_instance, used_gpus)
+                self.reserve_resources(rqmt, selected_devices=used_gpus)
             logging.debug('Loaded job: %i %s %s' % (pid, process.cmdline(), task_instance.call))
             return True