DL-Art-School/codes/utils/numeric_stability.py

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import torch
from torch import nn
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import models.archs.SRG1_arch as srg1
import models.archs.SwitchedResidualGenerator_arch as srg
import models.archs.NestedSwitchGenerator as nsg
import functools
blacklisted_modules = [nn.Conv2d, nn.ReLU, nn.LeakyReLU, nn.BatchNorm2d, nn.Softmax]
def install_forward_trace_hooks(module, id="base"):
if type(module) in blacklisted_modules:
return
module.register_forward_hook(functools.partial(inject_input_shapes, mod_id=id))
for name, m in module.named_children():
cid = "%s:%s" % (id, name)
install_forward_trace_hooks(m, cid)
def inject_input_shapes(module: nn.Module, inputs, outputs, mod_id: str):
if len(inputs) == 1 and isinstance(inputs[0], torch.Tensor):
# Only single tensor inputs currently supported. TODO: fix.
module._input_shape = inputs[0].shape
def extract_input_shapes(module, id="base"):
shapes = {}
if hasattr(module, "_input_shape"):
shapes[id] = module._input_shape
for n, m in module.named_children():
cid = "%s:%s" % (id, n)
shapes.update(extract_input_shapes(m, cid))
return shapes
def test_stability(mod_fn, dummy_inputs, device='cuda'):
base_module = mod_fn().to(device)
dummy_inputs = dummy_inputs.to(device)
install_forward_trace_hooks(base_module)
base_module(dummy_inputs)
input_shapes = extract_input_shapes(base_module)
means = {}
stds = {}
for i in range(20):
mod = mod_fn().to(device)
t_means, t_stds = test_stability_per_module(mod, input_shapes, device)
for k in t_means.keys():
if k not in means.keys():
means[k] = []
stds[k] = []
means[k].extend(t_means[k])
stds[k].extend(t_stds[k])
for k in means.keys():
print("%s - mean: %f std: %f" % (k, torch.mean(torch.stack(means[k])),
torch.mean(torch.stack(stds[k]))))
def test_stability_per_module(mod: nn.Module, input_shapes: dict, device='cuda', id="base"):
means = {}
stds = {}
if id in input_shapes.keys():
format = input_shapes[id]
mean, std = test_numeric_stability(mod, format, 1, device)
means[id] = mean
stds[id] = std
for name, child in mod.named_children():
cid = "%s:%s" % (id, name)
m, s = test_stability_per_module(child, input_shapes, device=device, id=cid)
means.update(m)
stds.update(s)
return means, stds
def test_numeric_stability(mod: nn.Module, format, iterations=50, device='cuda'):
x = torch.randn(format).to(device)
means = []
stds = []
with torch.no_grad():
for i in range(iterations):
x = mod(x)[0]
measure = x
means.append(torch.mean(measure).detach())
stds.append(torch.std(measure).detach())
return torch.stack(means), torch.stack(stds)
'''
def __init__(self, switch_filters, switch_reductions, switch_processing_layers, trans_counts, trans_kernel_sizes,
trans_layers, transformation_filters, initial_temp=20, final_temperature_step=50000, heightened_temp_min=1,
heightened_final_step=50000, upsample_factor=1, add_scalable_noise_to_transforms=False):
'''
if __name__ == "__main__":
'''
test_stability(functools.partial(nsg.NestedSwitchedGenerator,
switch_filters=64,
switch_reductions=[3,3,3,3,3],
switch_processing_layers=[1,1,1,1,1],
trans_counts=[3,3,3,3,3],
trans_kernel_sizes=[3,3,3,3,3],
trans_layers=[3,3,3,3,3],
transformation_filters=64,
initial_temp=10),
torch.randn(1, 3, 64, 64),
device='cuda')
'''
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test_stability(functools.partial(srg1.ConfigurableSwitchedResidualGenerator,
switch_filters=[32,32,32,32],
switch_growths=[16,16,16,16],
switch_reductions=[4,3,2,1],
switch_processing_layers=[3,3,4,5],
trans_counts=[16,16,16,16,16],
trans_kernel_sizes=[3,3,3,3,3],
trans_layers=[3,3,3,3,3],
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trans_filters_mid=[24,24,24,24,24],
initial_temp=10),
torch.randn(1, 3, 64, 64),
device='cuda')