[GitHub] lilhope opened a new issue #8860: symbol.simple_bind raise error:'std:out of range,what(): _Map_base::at'

[GitBox <gi...@apache.org>]

lilhope opened a new issue #8860: symbol.simple_bind raise error:'std:out of range,what():  _Map_base::at'
URL: https://github.com/apache/incubator-mxnet/issues/8860
 
 
   Hi,
       I'm using the `bucket_module`, and `mod.fit()` when first `bind`(using default_bucket_key) it works well, but when the `bucket_key` changes, in `switch bucket`, some error happens. I debug it and find in `symbol.simple_bind`, the `_LIB.MXExecutorSimpleBind`(Line 1453) throws error:'std:out of range,what():  _Map_base::at', I list the parameters of function `simple_bind` as follow:
   ```
   context:gpu(2)
   input_types:{'data': <type 'numpy.float32'>, 'expression': <type 'numpy.float32'>, 'label': <type 'numpy.float32'>}
   shared_exec:<mxnet.executor.Executor object at 0x7f42cd8cae90>
   input_shapes:{'data': (2, 3L, 640L, 640L), 'expression': (2, 5L), 'label': (2, 1, 5)}
   shared_data_arrays:{'data':mx.nd.zeros((2,3,640,640)),'expression':mx.nd.zeros((2,50),'label':mx.nd.zeros((2,1,5))}
   ```
   I'm confused and struggle for this question for some days, any help will be appreciated.
   **Thanks**

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