Deep Learning on Rescale

Deep Learning is a sub-field of machine learning that focuses on predictive models that have large numbers of parameters, typically organized as a layered computational graph. It is fast becoming the preferred model choice for large datasets with samples that have many features.

Rescale provides GPU-based HPC nodes and clusters for training deep learning models in the cloud. Rescale supports batch training of models as well as interactive data analysis through Rescale Desktops. A wide variety of GPU configurations are available from lower cost previous-generation K80s to the latest multi-GPU P100s with NVLink interconnect. Clusters can be preconfigured with your choice from the most popular deep learning frameworks.

In this page, we will present to you different Rescale job examples for four different applications. Click on the Import Job Setup button to clone an example job into your account, which you can then submit. Click on the Get Job Results button to review the full setup and results of a completed example.

For more information on how to set up and submit a Basic Job, please refer to the tutorial here.

For more information on how to set up and launch a Desktop Session, please refer to the tutorial here.

Supported Frameworks and Applications

Keras is a high-level neural network Python framework built on top of TensorFlow, CNTK, and Theano. It supports higher-order primitives specifically for convolutional and recurrent neural networks.

Here is an example of training a classification model on the classic MNIST handwritten digit dataset. We will train a simple multi-layer perceptron model using this input training script.

PyTorch is the Python port of the Torch deep learning framework. PyTorch is known for great support for building dynamic neural networks and doing reinforcement learning.

Super Resolution Example

The first example is training and then using a model to perform “super-resolution” to scale up an image while minimizing noise.

Original image

pytorch super res unscaled.ca84109e

Super Resolution image
Scaled super resolution image

LSTM DOE Example

So far examples have focused on training a single model for a task with a set of parameters selected by the user building the model. The example here is now a Design of Experiments (DOE) which is a sensitivity analysis for one or more parameters. Here is an example using the Rescale DOE framework to build many models, randomly sampling hyper-parameters that define the model. This case builds a LSTM model to perform word-level modeling.

In this case, we are doing a Monte Carlo sampling of the following LSTM model parameters:

LSTM DOE Parallel Settings

The embed _size and n_hidden parameters impact how many nodes are in the network. The dropout parameter is used to control overfitting to input data. Finally, batch_size determines how many examples we train one at a time.

LSTM DOE Chart Results