1 files changed, 14 insertions, 3 deletions
diff --git a/nerv/nn/layer_repo.lua b/nerv/nn/layer_repo.lua
index acef54a..647aac9 100644
--- a/nerv/nn/layer_repo.lua
+++ b/nerv/nn/layer_repo.lua
@@ -29,10 +29,21 @@ function LayerRepo:add_layers(layer_spec, param_repo, global_conf)
 end
 
 function LayerRepo:rebind(param_repo)
-    for id, layer in pairs(self.layers) do
-        layer.lconf.pr = param_repo
-        layer:bind_params()
+    if self.__rebinding then
+        return
     end
+    self.__rebinding = true
+    for _, layer in pairs(self.layers) do
+        if not layer.__already_rebound then
+            layer.__already_rebound = true
+            layer.lconf.pr = param_repo
+            layer:bind_params()
+        end
+    end
+    for _, layer in pairs(self.layers) do
+        layer.__already_rebound = false
+    end
+    self.__rebinding = false
 end
 
 function LayerRepo:get_layer(lid)