Method _assertNoGrad

loss/utils.py:250–253

(self, variable)

        print('self.sum_by_non_zero_weights', self.sum_by_non_zero_weights)

    def _assertNoGrad(self, variable):
        assert not variable.requires_grad, \
            "nn criterions don't compute the gradient w.r.t. targets - please " \
            "mark these variables as volatile or not requiring gradients"

    def forward_simple(self, input, target, return_raw_cost=False):
        self._assertNoGrad(target)