def _capture_activations(layer: nn.Module, inputs: Tuple[torch.Tensor],
outputs: Tuple[torch.Tensor]):
r"""Forward hook handler captures and saves activations flowing into the
``layer`` in ``layer.activations`` during forward pass.
Args:
layer: Layer to capture the activations in.
inputs: Inputs to the ``layer``.
outputs: Outputs of the ``layer``.
"""
layer_type = get_layer_type(layer)
if (not requires_grad(layer)
or layer_type not in _supported_layers_grad_samplers.keys()
or not layer.training):
return
if _hooks_disabled:
return
if get_layer_type(layer) not in _supported_layers_grad_samplers.keys():
raise ValueError("Hook installed on unsupported layer")
if not hasattr(layer, "activations"):
layer.activations = []
layer.activations.append(inputs[0].detach())
def _layer_activations(layer: nn.Module, layer_args: List[Any],
out: Any) -> int:
"""
Computes the number of activations produced by a single layer.
Activations are counted only for convolutional layers. To override this behavior, a
layer can define a method to compute activations with the signature below, which
will be used to compute the activations instead.
Class MyModule(nn.Module):
def activations(self, out, *layer_args):
...
"""
typestr = layer.__repr__()
if hasattr(layer, "activations"):
activations = layer.activations(out, *layer_args)
elif isinstance(layer, (nn.Conv1d, nn.Conv2d, nn.Conv3d)):
activations = out.numel()
else:
return 0
message = [f"module: {typestr}", f"activations: {activations}"]
logging.debug("\t".join(message))
return int(activations)
def _capture_activations(layer: nn.Module, input: List[torch.Tensor],
output: torch.Tensor):
"""Save activations into layer.activations in forward pass"""
if _hooks_disabled:
return
if get_layer_type(layer) not in _supported_layers_grad_samplers.keys():
raise ValueError("Hook installed on unsupported layer")
layer.activations = input[0].detach()
def capture_activations_hook(
self,
module: nn.Module,
forward_input: List[torch.Tensor],
_forward_output: torch.Tensor,
):
if not requires_grad(module) or not module.training:
return
if not self.hooks_enabled:
return
if not hasattr(module, "activations"):
module.activations = []
module.activations.append(forward_input[0].detach()) # pyre-ignore
def _capture_activations(
layer: nn.Module, inputs: Tuple[torch.Tensor], outputs: Tuple[torch.Tensor]
):
r"""Forward hook handler captures and saves activations flowing into the
``layer`` in ``layer.activations`` during forward pass.
Args:
layer: Layer to capture the activations in.
inputs: Inputs to the ``layer``.
outputs: Outputs of the ``layer``.
"""
if _hooks_disabled:
return
if get_layer_type(layer) not in _supported_layers_grad_samplers.keys():
raise ValueError("Hook installed on unsupported layer")
# pyre-fixme[16]: `Module` has no attribute `activations`.
layer.activations = inputs[0].detach()
