feat/fashion-dropout: adds dropout to fashion example

[subversive-owl]

This shouldn't be merged as it is, because it changes the juice dependency to local again, but it helps test the dropout layer.

[drahnr]

Does it work if you compile with native?

[subversive-owl]

well, it compiles, but i don't think native can support this:

    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
     Running `target/debug/juice-examples fashion conv --batch-size 20 --learning-rate 0.002`
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Plugin(Plugin("Unable to create CuDNN TensorDescriptor."))', /checkout/src/libcore/result.rs:906:4
stack backtrace:
  11: <juice::layers::common::dropout::Dropout<f32, B> as juice::layer::ComputeOutput<f32, B>>::compute_output
             at juice/src/layers/common/dropout.rs:74
  12: juice::layer::ILayer::forward
             at juice/src/layer.rs:1015
  13: <juice::layer::Layer<B>>::forward
             at juice/src/layer.rs:506
  14: <juice::layers::container::sequential::Sequential<B> as juice::layer::ILayer<B>>::forward
             at juice/src/layers/container/sequential.rs:272
  15: <juice::layer::Layer<B>>::forward
             at juice/src/layer.rs:506
  16: <juice::solver::Solver<SolverB, B>>::train_minibatch
             at juice/src/solver/mod.rs:76
  17: juice_examples::run_fashion
             at src/main.rs:524

[drahnr]

It's still running with cuda.

I am gonna look deeper into this hopefully this weekend.

[subversive-owl]

that's strange, i just installed CUDA 9.0 and ran into the same error:

cargo run --features cuda -- fashion conv --batch-size 20 --learning-rate 0.002
    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
     Running `target/debug/juice-examples fashion conv --batch-size 20 --learning-rate 0.002`
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Plugin(Plugin("Unable to create CuDNN TensorDescriptor."))', /checkout/src/libcore/result.rs:906:4
note: Run with `RUST_BACKTRACE=1` for a backtrace.

nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2017 NVIDIA Corporation
Built on Fri_Sep__1_21:08:03_CDT_2017
Cuda compilation tools, release 9.0, V9.0.176

nvidia-smi
Sun Nov 19 10:32:49 2017       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 384.90                 Driver Version: 384.90                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GTX 106...  Off  | 00000000:01:00.0  On |                  N/A |
|  0%   37C    P8     7W / 120W |    134MiB /  6064MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+