def backward(ctx, gradgrad_input, gradgrad_bias):
out, = ctx.saved_tensors
gradgrad_out = fused.fused_bias_act(gradgrad_input, gradgrad_bias, out,
3, 1, ctx.negative_slope,
ctx.scale)
return gradgrad_out, None, None, None, None
def forward(ctx, input, bias, negative_slope, scale):
empty = input.new_empty(0)
out = fused.fused_bias_act(input, bias, empty, 3, 0, negative_slope, scale)
ctx.save_for_backward(out)
ctx.negative_slope = negative_slope
ctx.scale = scale
return out
def forward(ctx, grad_output, out, negative_slope, scale):
ctx.save_for_backward(out)
ctx.negative_slope = negative_slope
ctx.scale = scale
empty = grad_output.new_empty(0)
grad_input = fused.fused_bias_act(grad_output, empty, out, 3, 1,
negative_slope, scale)
dim = [0]
if grad_input.ndim > 2:
dim += list(range(2, grad_input.ndim))
grad_bias = grad_input.sum(dim).detach()
return grad_input, grad_bias
