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###### New project Quick Start
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To start a new project you define two files, a LightningModule and a Trainer file.
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A separate trainer file allows to run many LightningModules. Each LightningModule has the core
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logic to a particular research project.
For example, one lightningModule could be an image classifier, the other
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one could be a seq-2-seq model, both (optionally) ran by the same trainer file.
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1. [MNIST LightningModule ](https://williamfalcon.github.io/pytorch-lightning/LightningModule/RequiredTrainerInterface/#minimal-example )
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2. [Trainer ](https://williamfalcon.github.io/pytorch-lightning/Trainer/ )
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- [Basic CPU Trainer Template ](https://github.com/williamFalcon/pytorch-lightning/blob/master/pytorch_lightning/examples/new_project_templates/single_cpu_template.py )
- [Multi-GPU Trainer Template ](https://github.com/williamFalcon/pytorch-lightning/blob/master/pytorch_lightning/examples/new_project_templates/single_gpu_node_template.py )
- [GPU cluster Trainer Template ](https://github.com/williamFalcon/pytorch-lightning/blob/master/pytorch_lightning/examples/new_project_templates/multi_node_cluster_template.py )
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###### Docs shortcuts
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- [LightningModule ](LightningModule/RequiredTrainerInterface/ )
- [Trainer ](Trainer/ )
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###### Quick start examples
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- [CPU example ](examples/Examples/#cpu-hyperparameter-search )
- [Hyperparameter search on single GPU ](examples/Examples/#hyperparameter-search-on-a-single-or-multiple-gpus )
- [Hyperparameter search on multiple GPUs on same node ](examples/Examples/#hyperparameter-search-on-a-single-or-multiple-gpus )
- [Hyperparameter search on a SLURM HPC cluster ](examples/Examples/#Hyperparameter search on a SLURM HPC cluster )
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###### Checkpointing
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- [Model saving ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Checkpointing/#model-saving )
- [Model loading ](https://williamfalcon.github.io/pytorch-lightning/LightningModule/methods/#load-from-metrics )
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###### Computing cluster (SLURM)
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- [Running grid search on a cluster ](https://williamfalcon.github.io/pytorch-lightning/Trainer/SLURM%20Managed%20Cluster#running-grid-search-on-a-cluster )
- [Walltime auto-resubmit ](https://williamfalcon.github.io/pytorch-lightning/Trainer/SLURM%20Managed%20Cluster#walltime-auto-resubmit )
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###### Debugging
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- [Fast dev run ](https://williamfalcon.github.io/pytorch-lightning/Trainer/debugging/#fast-dev-run )
- [Inspect gradient norms ](https://williamfalcon.github.io/pytorch-lightning/Trainer/debugging/#inspect-gradient-norms )
- [Log GPU usage ](https://williamfalcon.github.io/pytorch-lightning/Trainer/debugging/#Log-gpu-usage )
- [Make model overfit on subset of data ](https://williamfalcon.github.io/pytorch-lightning/Trainer/debugging/#make-model-overfit-on-subset-of-data )
- [Print the parameter count by layer ](https://williamfalcon.github.io/pytorch-lightning/Trainer/debugging/#print-the-parameter-count-by-layer )
- [Pring which gradients are nan ](https://williamfalcon.github.io/pytorch-lightning/Trainer/debugging/#print-which-gradients-are-nan )
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###### Distributed training
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- [16-bit mixed precision ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Distributed%20training/#16-bit-mixed-precision )
- [Multi-GPU ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Distributed%20training/#Multi-GPU )
- [Multi-node ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Distributed%20training/#Multi-node )
- [Single GPU ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Distributed%20training/#single-gpu )
- [Self-balancing architecture ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Distributed%20training/#self-balancing-architecture )
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###### Experiment Logging
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- [Display metrics in progress bar ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#display-metrics-in-progress-bar )
- [Log metric row every k batches ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#log-metric-row-every-k-batches )
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- [Process position ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#process-position )
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- [Tensorboard support ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#tensorboard-support )
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- [Save a snapshot of all hyperparameters ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#save-a-snapshot-of-all-hyperparameters )
- [Snapshot code for a training run ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#snapshot-code-for-a-training-run )
- [Write logs file to csv every k batches ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Logging/#write-logs-file-to-csv-every-k-batches )
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###### Training loop
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- [Accumulate gradients ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Training%20Loop/#accumulated-gradients )
- [Force training for min or max epochs ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Training%20Loop/#force-training-for-min-or-max-epochs )
- [Force disable early stop ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Training%20Loop/#force-disable-early-stop )
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- [Gradient Clipping ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Training%20Loop/#gradient-clipping )
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- [Hooks ](https://williamfalcon.github.io/pytorch-lightning/Trainer/hooks/ )
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- [Learning rate scheduling ](https://williamfalcon.github.io/pytorch-lightning/LightningModule/RequiredTrainerInterface/#configure_optimizers )
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- [Use multiple optimizers (like GANs) ](https://williamfalcon.github.io/pytorch-lightning/LightningModule/RequiredTrainerInterface/#configure_optimizers )
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- [Set how much of the training set to check (1-100%) ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Training%20Loop/#set-how-much-of-the-training-set-to-check )
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###### Validation loop
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- [Check validation every n epochs ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Validation%20loop/#check-validation-every-n-epochs )
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- [Hooks ](https://williamfalcon.github.io/pytorch-lightning/Trainer/hooks/ )
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- [Set how much of the validation set to check ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Validation%20loop/#set-how-much-of-the-validation-set-to-check )
- [Set how much of the test set to check ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Validation%20loop/#set-how-much-of-the-test-set-to-check )
- [Set validation check frequency within 1 training epoch ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Validation%20loop/#set-validation-check-frequency-within-1-training-epoch )
- [Set the number of validation sanity steps ](https://williamfalcon.github.io/pytorch-lightning/Trainer/Validation%20loop/#set-the-number-of-validation-sanity-steps )
