Jihyeong Lee

### Description of changes: Refactored all exception types under the `smdebug/mxnet`, `smdebug/pytorch`, and `smdebug/tensorflow` directories to return the `SMDebugError` exception type. Also changed the logic of the end of training...

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Op endpoint not in the name of the variables?

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Hi, I'm getting the following error when I try to run a white box attack on DQN for BreakOut: ```tensorflow.python.framework.errors_impl.NotFoundError: Key deepq/q_func/action_value/fully_connected/biases not found in checkpoint``` I found that `deepq/q_func/action_value/fully_connected/biases:0`...

Added custom metrics expressions, supported by -c flag, example `python viewer.py --metric-expr "@total_bytes=flops; @total_time=time/s; @bw=DIV(@total_bytes,@total_time); @per_call=DIV(@bw,count);" -m @total_time ../tutorials/matmul.hatchet` # New contributor declaration - [ x] I am not making...