Code cleanup

utils/shared_grad.py

@@ -1,17 +0,0 @@
-# adapted from https://github.com/alexis-jacq/Pytorch-DPPO/blob/master/model.py
-
-import torch
-
-class SharedGrad():
-    def __init__(self, model):
-        self.grads = {}
-        for name, p in model.named_parameters():
-            self.grads[name+'_grad'] = torch.ones(p.size()).share_memory_()
-
-    def add_gradient(self, model):
-        for name, p in model.named_parameters():
-            self.grads[name+'_grad'] += p.grad.data
-
-    def reset(self):
-        for name,grad in self.grads.items():
-            self.grads[name].fill_(0)