[GitHub] [incubator-mxnet] yajiedesign opened a new issue #17888: cuda error with SequenceLast.

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

yajiedesign opened a new issue #17888: cuda error with SequenceLast.
URL: https://github.com/apache/incubator-mxnet/issues/17888
 
 
   ## Description
    CUDA: an illegal memory access was encountered error with SequenceLast.
   
   ### Error Message
    CUDA: an illegal memory access was encountered 
   
   ## To Reproduce
   simple lstm net work.
   `class LSTMNetwork(gluon.HybridBlock):
       def __init__(self, ctx=mx.gpu(0), **kwargs):
           super(LSTMNetwork, self).__init__(**kwargs)
           self.ctx = ctx
           with self.name_scope():
               self.main = gluon.nn.HybridSequential()
               self.main.add(nn.Dropout(0.5))
               self.main.add(rnn.LSTM (128, num_layers=1, dropout=0, bidirectional=True))
               self.main.add(nn.BatchNorm())
               self.output = gluon.nn.HybridSequential()
               self.output.add(nn.Dropout(0.5))
               self.output.add(nn.Dense(2, flatten=True))
   
       def hybrid_forward(self, F, x, **kwargs):
           x = x.transpose((2, 0, 1))
           output = self.main(x)
   		# this is work done
           # output1 =  output[-1]
           output = F.SequenceLast(output)
           output = self.output(output)
           return output
   `
   
   
   ### Steps to reproduce
   
   ## What have you tried to solve it?
   
   ## Environment
   ----------Python Info----------
   Version      : 3.7.3
   Compiler     : MSC v.1915 64 bit (AMD64)
   Build        : ('default', 'Mar 27 2019 17:13:21')
   Arch         : ('64bit', 'WindowsPE')
   ------------Pip Info-----------
   Version      : 20.0.2
   Directory    : D:\Anaconda3\lib\site-packages\pip
   ----------MXNet Info-----------
   Version      : 1.6.0
   Directory    : D:\Anaconda3\lib\site-packages\mxnet
   Num GPUs     : 1
   Hashtag not found. Not installed from pre-built package.
   ----------System Info----------
   Platform     : Windows-10-10.0.18362-SP0
   system       : Windows
   node         : DESKTOP-T6GH9E6
   release      : 10
   version      : 10.0.18362
   ----------Hardware Info----------
   machine      : AMD64
   processor    : Intel64 Family 6 Model 158 Stepping 12, GenuineIntel
   Name
   Intel(R) Core(TM) i7-9700KF CPU @ 3.60GHz
   
   ----------Network Test----------
   Setting timeout: 10
   Timing for MXNet: https://github.com/apache/incubator-mxnet, DNS: 0.0040 sec, LOAD: 1.4730 sec.
   Timing for GluonNLP GitHub: https://github.com/dmlc/gluon-nlp, DNS: 0.0000 sec, LOAD: 1.4230 sec.
   Timing for GluonNLP: http://gluon-nlp.mxnet.io, DNS: 0.3570 sec, LOAD: 2.3780 sec.
   Timing for D2L: http://d2l.ai, DNS: 0.5670 sec, LOAD: 0.8950 sec.
   Timing for D2L (zh-cn): http://zh.d2l.ai, DNS: 0.0040 sec, LOAD: 0.3690 sec.
   Timing for FashionMNIST: https://repo.mxnet.io/gluon/dataset/fashion-mnist/train-labels-idx1-ubyte.gz, DNS: 1.0500 sec, LOAD: 2.0910 sec.
   Timing for PYPI: https://pypi.python.org/pypi/pip, DNS: 0.0030 sec, LOAD: 14.5190 sec.
   Timing for Conda: https://repo.continuum.io/pkgs/free/, DNS: 0.0040 sec, LOAD: 1.6770 sec.
   

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