Created by: rlistengr

环境：百度AI studio 问题：

    labels = fluid.layers.data(name='labels', shape=[1], dtype='int64', lod_level=0)
    indexs = fluid.layers.data(name='indexs', shape=[1], dtype='int64', lod_level=0)

    。。。。
   #logits的大小是batch_size * 2
    predict = fluid.layers.softmax(input=logits)
    softmax = fluid.layers.reshape(logits, [-1])
    indexs1 = indexs + labels
    prob = fluid.layers.gather(softmax, indexs1)
    weight_ones = fluid.layers.ones(shape=[100], dtype="float")
    weight1 = weight_ones - prob
    weight = fluid.layers.pow(weight1, 2.0)
    ce_loss = weight * fluid.layers.log(prob)

现在运行时发生错误：

Traceback (most recent call last):
  File "train.py", line 348, in <module>
    main(args)
  File "train.py", line 223, in main
    fetch_list=[loss.name, accuracy.name, num_seqs.name, predict.name, labels.name])
  File "/usr/local/lib/python2.7/dist-packages/paddle/fluid/parallel_executor.py", line 303, in run
    self.executor.run(fetch_list, fetch_var_name)
paddle.fluid.core.EnforceNotMet: Invoke operator gather error.
Python Callstacks: 
  File "/usr/local/lib/python2.7/dist-packages/paddle/fluid/framework.py", line 1317, in append_op
    attrs=kwargs.get("attrs", None))
  File "/usr/local/lib/python2.7/dist-packages/paddle/fluid/layer_helper.py", line 56, in append_op
    return self.main_program.current_block().append_op(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/paddle/fluid/layers/nn.py", line 7165, in gather
    outputs={"Out": out})
  File "train.py", line 115, in create_model
    prob = fluid.layers.gather(softmax, indexs1)
  File "train.py", line 174, in main
    is_prediction=False)
  File "train.py", line 348, in <module>
    main(args)
C++ Callstacks: 
Tensor holds the wrong type, it holds int64_t at [/paddle/paddle/fluid/framework/tensor_impl.h:29]
PaddlePaddle Call Stacks: 
0       0x7f60519881a5p void paddle::platform::EnforceNotMet::Init<char const*>(char const*, char const*, int) + 357
1       0x7f6051988529p paddle::platform::EnforceNotMet::EnforceNotMet(std::__exception_ptr::exception_ptr, char const*, int) + 137

意思是gather操作的下标类型错误，麻烦帮忙看下