public void Run(ref Model model)
{
if (!model.layout.Contains("NCHW"))
{
return;
}
// This is a necessary pass for NCHW models that have the layout built into the model itself (e.g. SSD)
// It's necessary to contract this into a single layer, so that the Gather pass doesn't get converted
var shapeContractionPass = new ShapeContractionPass();
shapeContractionPass.Run(ref model);
// Remove shape-gather-reshape pattern when they map a transpose to NHWC operation
var shapeGatherReshapeToNHWCRemovePass = new ShapeGatherReshapeToNHWCRemovePass();
shapeGatherReshapeToNHWCRemovePass.Run(ref model);
Rewrite(ref model);
// Preserve any new layers that must be preserved (e.g. new LSTM outputs)
// TODO: outputs are preserved, adjust optimization passes to properly merge outputs by renaming layers
var preserveLayersPass = new PreserveLayersPass();
preserveLayersPass.Run(ref model);
// cleanup
var removeUnusedPass = new Cleanup.RemoveUnusedLayersPass();
removeUnusedPass.Run(ref model);
var removeNoOpPass = new Cleanup.RemoveNoOpsPass();
removeNoOpPass.Run(ref model);
}
public void Run(ref Model model)
{
var warnings = new List <Model.ImporterWarning>();
var shapeInferencePass = new IRShapeInferenceAndConstantFusing();
shapeInferencePass.Run(ref model, warnings);
if (Optimize)
{
// Optimization
var linearLayerFusingPass = new Optimization.FuseLinearLayersPass();
linearLayerFusingPass.Run(ref model);
var activationFusingPass = new Optimization.FuseActivationPass();
activationFusingPass.Run(ref model);
// Cleanup
var removeUnusedPass = new Cleanup.RemoveUnusedLayersPass();
removeUnusedPass.Run(ref model);
var removeNoOpPass = new Cleanup.RemoveNoOpsPass();
removeNoOpPass.Run(ref model);
}
// TODO, put asserts in ImporterWarning?
var validateNCHWPass = new ValidateNCHWPass();
validateNCHWPass.Run(model, ref warnings);
// to runnable NHWC
var nhwcPass = new NCHWToNHWCPass();
nhwcPass.Run(ref model);
// optimizations
if (Optimize)
{
var contractToSimplerLayerPass = new Optimization.ContractToSimplerLayerPass();
contractToSimplerLayerPass.Run(ref model);
var concatenateTransposesPass = new Optimization.ConcatenateTransposesPass();
concatenateTransposesPass.Run(ref model);
var dense3FusingPass = new Optimization.FuseDense3Pass();
dense3FusingPass.Run(ref model);
}
var validateNHWCPass = new ValidateNHWCPass();
validateNHWCPass.Run(model, ref warnings);
model.Warnings.AddRange(warnings);
}