def main(args):
result_dir = setup_run(args.run_name,
create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
seq_length = 32
dataset = ByteLevelTextDataset(args.dataset, seq_length)
depth = math.log2(seq_length)
assert int(depth) == depth
depth = int(depth)
vocab_size = dataset.vocab_size
batches = DataLoader(dataset,
args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=args.num_workers)
inter_dim = 8
embedding = nn.Embedding(vocab_size, inter_dim, max_norm=1.0).to(device)
embedding.weight.requires_grad = False
G = Generator(args.latent_size, [256, 128, 64, 32],
out_dim=inter_dim).to(device)
D = UnetDiscriminator(32, depth=4, in_dim=inter_dim).to(device)
# G.apply(apply_spectral_norm)
# D.apply(apply_spectral_norm)
G.apply(init_weights)
D.apply(init_weights)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.0, 0.999))
D_opt = torch.optim.Adam(D.parameters(), lr=args.d_lr, betas=(0.0, 0.999))
z_sample = torch.randn(args.n_sample, args.latent_size, 1).to(device)
#loss_f = RelativisticAverageHingeLoss(D)
loss_f = WGAN_GP(D)
def decode(embeds):
flatten = embeds.transpose(1, 2)
flatten = flatten.reshape(-1, flatten.size(-1))
dist = (flatten.pow(2).sum(1, keepdim=True) -
2 * flatten @ embedding.weight.T +
embedding.weight.T.pow(2).sum(0, keepdim=True))
_, samples = (-dist).max(1)
return samples.view(samples_embeds.size(0), -1)
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
p_fake_g_sum = 0
p_fake_l_sum = 0
p_real_g_sum = 0
p_real_l_sum = 0
start_time = time.time()
cur_step = 0
for step, reals in enumerate(batches):
reals = reals.to(device)
reals_embed = embedding(reals).transpose(1, 2)
reals_embed += torch.randn_like(reals_embed) * 0.01
batch_size = reals.size(0)
z = torch.randn(batch_size, args.latent_size, 1).to(device)
# Optimize the discriminator
fake_out = G(z)
D_opt.zero_grad()
d_loss, p_real_g, p_real_l, p_fake_g, p_fake_l = loss_d(
D, reals_embed, fake_out.detach())
d_loss.backward()
D_opt.step()
# Optimize generator
fake_out = G(z)
G_opt.zero_grad()
g_loss = loss_g(D, reals_embed, fake_out)
g_loss.backward()
G_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(g_loss)
d_loss_sum += float(d_loss)
p_fake_g_sum += float(p_fake_g)
p_fake_l_sum += float(p_fake_l)
p_real_g_sum += float(p_real_g)
p_real_l_sum += float(p_real_l)
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
logging.info(
f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] '
+
#f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, '
+
f'p_fake_g: {p_fake_g_sum / cur_step:.5f}, p_fake_l: {p_fake_l_sum / cur_step:.5f}, '
+
f'p_real_g: {p_real_g_sum / cur_step:.5f}, p_real_l: {p_real_l_sum / cur_step:.5f}, '
+ f'batches/s: {batches_per_sec:02.2f}')
g_loss_sum = d_loss_sum = 0
p_fake_sum = p_real_sum = 0
p_fake_g_sum = 0
p_fake_l_sum = 0
p_real_g_sum = 0
p_real_l_sum = 0
start_time = time.time()
if global_step % args.sample_every == 0:
samples_embeds = G_sample(z_sample)
samples = decode(samples_embeds)
reals_decode = decode(reals_embed)
(sample_dir / f'fakes_{global_step:06d}.txt').write_text(
'\n'.join(dataset.seq_to_text(samples)))
(sample_dir / f'reals_{global_step:06d}.txt').write_text(
'\n'.join(dataset.seq_to_text(reals_decode)))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass
def main(args):
result_dir = setup_run(args.run_name,
create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
seq_length = 32
from bpemb import BPEmb
lines = Path(args.dataset).read_text().split('\n')[:2_500_000]
bpe = BPEmb(lang='de', vs=50000, dim=100, add_pad_emb=True)
data = torch.full((len(lines), seq_length),
bpe.vocab_size,
dtype=torch.long)
for i, encoded_sample in enumerate(bpe.encode_ids_with_bos_eos(lines)):
l = min(seq_length, len(encoded_sample))
data[i, :l] = torch.tensor(encoded_sample, dtype=torch.long)[:l]
#dataset = ByteLevelTextDataset(args.dataset, seq_length)
depth = math.log2(seq_length)
assert int(depth) == depth
depth = int(depth)
vocab_size = bpe.vocab_size + 1
batches = DataLoader(data,
args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=args.num_workers)
inter_dim = bpe.dim
embedding = nn.Embedding(vocab_size,
inter_dim,
_weight=torch.tensor(
bpe.vectors, dtype=torch.float)).to(device)
embedding.weight.requires_grad = False
# embedding = nn.Embedding(vocab_size, inter_dim, max_norm=1.0).to(device)
# spiegel model
G = Generator(args.latent_size, [256, 256, 128, 64, 64],
out_dim=inter_dim).to(device)
D = UnetDiscriminator(64, max_channel=256, depth=5,
in_dim=inter_dim).to(device)
# G = Generator(args.latent_size, inter_dim, 256).to(device)
# D = Discriminator(inter_dim, 256).to(device)
G.apply(apply_spectral_norm)
D.apply(apply_spectral_norm)
G.apply(init_weights)
D.apply(init_weights)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
D_orig = D
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
D_params = list(D.parameters())
#D_params += list(embedding.parameters())
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.5, 0.999))
D_opt = torch.optim.Adam(D_params, lr=args.d_lr, betas=(0.5, 0.999))
z_sample = torch.randn(seq_length, args.batch_size,
args.latent_size).to(device)
#loss_f = RelativisticAverageHingeLoss(D)
#loss_f = GANLoss(D)
loss_f = WGAN_GP(D)
def decode(embeds):
flatten = embeds.transpose(1, 2)
flatten = flatten.reshape(-1, flatten.size(-1))
dist = (flatten.pow(2).sum(1, keepdim=True) -
2 * flatten @ embedding.weight.T +
embedding.weight.T.pow(2).sum(0, keepdim=True))
_, ids = (-dist).max(1)
ids = ids.view(embeds.size(0), -1)
decoded = []
for seq in ids:
seq = list(seq.detach().cpu().numpy())
seq = list(filter(lambda x: x != vocab_size - 1, seq))
dec = bpe.decode_ids(np.array(seq))
decoded.append(dec or '')
return decoded
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
p_fake_sum = 0
p_real_sum = 0
start_time = time.time()
cur_step = 0
for step, reals in enumerate(batches):
reals = reals.to(device)
reals_embed = embedding(reals).permute(1, 0, 2)
#reals_embed += torch.normal(0, 0.05, size=reals_embed.shape, device=device)
batch_size = reals.size(0)
z = torch.randn(seq_length, batch_size,
args.latent_size).to(device)
# Optimize the discriminator
fake_out = G(z)
D_opt.zero_grad()
d_loss, p_real, p_fake = loss_f.loss_d(reals_embed,
fake_out.detach())
d_loss.backward()
D_opt.step()
# Optimize generator
fake_out = G(z)
G_opt.zero_grad()
g_loss = loss_f.loss_g(reals_embed, fake_out)
g_loss.backward()
G_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(g_loss)
d_loss_sum += float(d_loss)
p_fake_sum += float(p_fake)
p_real_sum += float(p_real)
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
logging.info(
f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] '
+
#f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, '
+
f'p_fake_g: {p_fake_sum / cur_step:.5f}, p_fake_l: {p_real_sum / cur_step:.5f}, '
+
#f'G_attn_gamma: {G_attn_sum / cur_step:.2f}, D_attn_gamma: {D_attn_sum / cur_step:.2f}, '
f'batches/s: {batches_per_sec:02.2f}')
g_loss_sum = d_loss_sum = 0
p_fake_sum = 0
p_real_sum = 0
start_time = time.time()
if global_step % args.sample_every == 0:
samples_embeds = G_sample(z_sample).permute(1, 2, 0)
samples = decode(samples_embeds)
reals_decode = decode(reals_embed.permute(1, 2, 0))
(sample_dir / f'fakes_{global_step:06d}.txt').write_text(
'\n'.join(samples))
(sample_dir / f'reals_{global_step:06d}.txt').write_text(
'\n'.join(reals_decode))
# (sample_dir / f'fakes_{global_step:06d}.txt').write_text('\n'.join(dataset.seq_to_text(samples)))
# (sample_dir / f'reals_{global_step:06d}.txt').write_text('\n'.join(dataset.seq_to_text(reals_decode)))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass
def main(args):
result_dir = setup_run(args.run_name,
create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
decode = BPEDataset(args.original_dataset).seq_to_text
vq_model = torch.load(args.vq_model).to(device)
depth = vq_model.depth
num_classes = vq_model.quantize[0].n_embed
dataset = LMDBDataset(args.vq_dataset)
batches = DataLoader(dataset,
args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=args.num_workers)
G = Generator(args.latent_size, [128, 128, 128, 128],
num_classes,
attn=args.attn).to(device)
D = Discriminator([128, 128, 128, 128], num_classes,
attn=args.attn).to(device)
if args.attn:
D_gammas = list(
map(attrgetter('gamma'),
filter(lambda m: isinstance(m, SelfAttention), D.modules())))
G_gammas = list(
map(attrgetter('gamma'),
filter(lambda m: isinstance(m, SelfAttention), G.modules())))
#G.apply(init_weights)
#G.apply(apply_spectral_norm)
#D.apply(init_weights)
#D.apply(apply_spectral_norm)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.5, 0.9))
D_opt = torch.optim.Adam(D.parameters(), lr=args.d_lr, betas=(0.5, 0.9))
z_sample = torch.randn(args.n_sample, args.latent_size, 1).to(device)
#loss_f = RelativisticAverageHingeLoss(D)
loss_f = WGAN_GP(D)
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
cur_step = 0
for step, codes in enumerate(batches):
codes = [code.to(device) for code in codes]
codes_one_hot = [
F.one_hot(code, num_classes=num_classes).transpose(
1, 2).type(torch.float) for code in codes
]
batch_size = codes[0].size(0)
# code_noise.p = 0.3 * (1.0 - min(1.0, interpol * 2))
# code = code_noise(code)
z = torch.randn(batch_size, args.latent_size, 1).to(device)
# Optimize the discriminator
fake_logits = G(z)
fake_probs = [
torch.softmax(logits, dim=1).detach()
for logits in fake_logits
]
D_opt.zero_grad()
loss_d = loss_f.d_loss(codes_one_hot, fake_probs[::-1])
loss_d.backward()
D_opt.step()
# Optimize generator
fake_logits = G(z)
fake_probs = [
torch.softmax(logits, dim=1) for logits in fake_logits
]
G_opt.zero_grad()
loss_g = loss_f.g_loss(codes_one_hot, fake_probs[::-1])
loss_g.backward()
G_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(loss_g)
d_loss_sum += float(loss_d)
# p_fake_sum += float(p_fake)
# p_real_sum += float(p_real)
if args.attn:
for i, (d_gamma,
g_gamma) in enumerate(zip(D_gammas, G_gammas)):
D_gammas_sum[i] = D_gammas_sum.get(i, 0) + d_gamma
G_gammas_sum[i] = G_gammas_sum.get(i, 0) + g_gamma
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
if args.attn:
D_gammas_avg = repr_list([
gamma / cur_step
for gamma in D_gammas_sum.values()
])
G_gammas_avg = repr_list([
gamma / cur_step
for gamma in G_gammas_sum.values()
])
logging.info(
f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] '
+
#f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, '
+
#f'p_fake: {p_fake_sum / cur_step:.5f}, p_real: {p_real_sum / cur_step:.5f}, ' +
(f'd_attn_gammas: [{D_gammas_avg}], g_attn_gammas: [{G_gammas_avg}], '
if args.attn else '') +
f'batches/s: {batches_per_sec:02.2f}')
g_loss_sum = d_loss_sum = 0
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
if global_step % args.sample_every == 0:
sample_codes = [
logits.argmax(1) for logits in G_sample(z_sample)
]
sample_logits = [
vq_model.decode_code(sample_code, depth - 1 - i)
for i, sample_code in enumerate(sample_codes)
]
samples_decoded = [
decode(logits.argmax(-1)) for logits in sample_logits
]
reals_logits = [
vq_model.decode_code(code[:args.n_sample], i)
for i, code in enumerate(codes)
]
reals_decoded = [
decode(logits.argmax(-1)) for logits in reals_logits
]
(sample_dir /
f'fakes_{global_step:06d}.txt').write_text('\n\n'.join(
map(lambda g: '\n'.join(g), zip(*samples_decoded))))
(sample_dir / f'reals_{global_step:06d}.txt').write_text(
'\n\n'.join(
map(lambda g: '\n'.join(g), zip(*reals_decoded))))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass
def main(args):
result_dir = setup_run(args.run_name, create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
decode = BPEDataset(args.original_dataset).seq_to_text
vq_model = torch.load(args.vq_model).to(device)
quantizers = vq_model.quantize
for q in quantizers:
q.eval()
depth = vq_model.depth
num_classes = vq_model.quantize[0].n_embed
quant_dim = vq_model.quantize[0].dim
dataset = LMDBDataset(args.vq_dataset)
batches = DataLoader(dataset, args.batch_size, shuffle=True, pin_memory=True, num_workers=args.num_workers)
if args.attn:
G_attn = [False, False, True, False]
D_attn = [False, True, False, False]
else:
G_attn = False
D_attn = False
G = Generator(args.latent_size, [512, 512, 256, 128], quant_dim, attn=G_attn).to(device)
D = Discriminator([128, 256, 512, 512], quant_dim, attn=D_attn).to(device)
if args.attn:
D_gammas = list(map(attrgetter('gamma'), filter(lambda m: isinstance(m, SelfAttention), D.modules())))
G_gammas = list(map(attrgetter('gamma'), filter(lambda m: isinstance(m, SelfAttention), G.modules())))
#G.apply(init_weights)
#G.apply(apply_spectral_norm)
#D.apply(init_weights)
#D.apply(apply_spectral_norm)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.5, 0.999))
D_opt = torch.optim.Adam(D.parameters(), lr=args.d_lr, betas=(0.5, 0.999))
z_sample = torch.randn(args.n_sample, args.latent_size, 1).to(device)
loss_f = WGAN_GP(D)
#loss_f = RelativisticAverageHingeLoss(D)
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
p_fake_sum = 0
p_real_sum = 0
vq_diffs_sum = [0] * depth
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
cur_step = 0
for step, reals in enumerate(batches):
#reals_code = [code.to(device) for code in reals_code]
#reals_embed = [q.embed_code(c).transpose(1, 2) for q, c in zip(quantizers, reals_code)]
reals = [real.to(device) for real in reals]
batch_size = reals[0].size(0)
z = torch.randn(batch_size, args.latent_size, 1).to(device)
# Optimize the discriminator
fake_out = G(z)
fake_out = [t.detach() for t in fake_out]
# fake_embeds = [q(
# o.transpose(1, 2)
# )[0].transpose(1, 2).detach() for q, o in zip(quantizers, fake_out)]
D_opt.zero_grad()
loss_d, p_fake, p_real = loss_f.d_loss(reals, fake_out[::-1])
loss_d.backward()
D_opt.step()
# Optimize generator
fake_out = G(z)
_, vq_diffs, fake_codes = list(zip(*[q(
o.transpose(1, 2))
for q, o in zip(quantizers, fake_out)
]))
#fake_out = [t.transpose(1, 2) for t in fake_out]
G_opt.zero_grad()
loss_g = loss_f.g_loss(reals, fake_out[::-1])
#loss_g += 0.01 * sum(vq_diffs)
loss_g.backward()
G_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(loss_g)
d_loss_sum += float(loss_d)
p_fake_sum += float(p_fake)
p_real_sum += float(p_real)
vq_diffs_sum = [v_old + float(v_new) for v_old, v_new in zip(vq_diffs_sum, vq_diffs)]
if args.attn:
for i, (d_gamma, g_gamma) in enumerate(zip(D_gammas, G_gammas)):
D_gammas_sum[i] = D_gammas_sum.get(i, 0) + d_gamma
G_gammas_sum[i] = G_gammas_sum.get(i, 0) + g_gamma
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
if args.attn:
D_gammas_avg = repr_list([gamma / cur_step for gamma in D_gammas_sum.values()])
G_gammas_avg = repr_list([gamma / cur_step for gamma in G_gammas_sum.values()])
vq_diffs_avg = repr_list([diff / cur_step for diff in vq_diffs_sum])
logging.info(f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] ' +
# f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, ' +
f'p_fake: {p_fake_sum / cur_step:.5f}, p_real: {p_real_sum / cur_step:.5f}, ' +
(
f'd_attn_gammas: [{D_gammas_avg}], g_attn_gammas: [{G_gammas_avg}], ' if args.attn else '') +
f'vq_diffs: [{vq_diffs_avg}], ' +
f'batches/s: {batches_per_sec:02.2f}')
g_loss_sum = d_loss_sum = 0
p_fake_sum = p_real_sum = 0
vq_diffs_sum = [0] * depth
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
if global_step % args.sample_every == 0:
sample_out = G_sample(z_sample)
sample_codes= [q(
o.transpose(1, 2)
)[2] for q, o in zip(quantizers, sample_out)]
sample_logits = [vq_model.decode_code(sample_code, depth - 1 - i) for i, sample_code in
enumerate(sample_codes)]
samples_decoded = [decode(logits.argmax(-1)) for logits in sample_logits]
real_codes = [q(
o.transpose(1, 2)
)[2] for q, o in zip(quantizers, reals)]
reals_logits = [vq_model.decode_code(code[:args.n_sample], i) for i, code in enumerate(real_codes)]
reals_decoded = [decode(logits.argmax(-1)) for logits in reals_logits]
(sample_dir / f'fakes_{global_step:06d}.txt').write_text(
'\n\n'.join(map(lambda g: '\n'.join(g), zip(*samples_decoded))))
(sample_dir / f'reals_{global_step:06d}.txt').write_text(
'\n\n'.join(map(lambda g: '\n'.join(g), zip(*reals_decoded))))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass
def main(args):
result_dir = setup_run(args.run_name,
create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
dataset = BPEDataset(args.original_dataset)
depth = math.log2(dataset.seq_length)
assert int(depth) == depth
depth = int(depth)
vocab_size = dataset.vocab_size
batches = DataLoader(dataset,
args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=args.num_workers)
inter_dim = 32
extract_dims = [inter_dim] * 4 + [vocab_size]
inject_dims = [vocab_size] + [inter_dim] * 4
G = Generator(args.latent_size, [128, 128, 128, 128, 128],
extract_dims,
attn=args.attn).to(device)
D = Discriminator([128, 128, 128, 128, 128], inject_dims,
attn=args.attn).to(device)
T = TransformNetwork(vocab_size, [64, 64, 64, 64], inter_dim).to(device)
if args.attn:
D_gammas = list(
map(attrgetter('gamma'),
filter(lambda m: isinstance(m, SelfAttention), D.modules())))
G_gammas = list(
map(attrgetter('gamma'),
filter(lambda m: isinstance(m, SelfAttention), G.modules())))
#G.apply(init_weights)
#G.apply(apply_spectral_norm)
#D.apply(init_weights)
#D.apply(apply_spectral_norm)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.5, 0.9))
D_opt = torch.optim.Adam(list(D.parameters()) + list(T.parameters()),
lr=args.d_lr,
betas=(0.5, 0.9))
z_sample = torch.randn(args.n_sample, args.latent_size, 1).to(device)
#loss_f = RelativisticAverageHingeLoss(D)
loss_f = WGAN_GP(D)
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
p_fake_sum = 0
p_real_sum = 0
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
cur_step = 0
for step, reals in enumerate(batches):
reals = reals.to(device)
reals_one_hot = F.one_hot(reals,
num_classes=vocab_size).transpose(
1, 2).type(torch.float)
batch_size = reals.size(0)
reals_t = T(reals_one_hot)
reals_input = [reals_one_hot] + reals_t
z = torch.randn(batch_size, args.latent_size, 1).to(device)
# Optimize the discriminator
fake_out = G(z)
fake_probs = torch.softmax(fake_out[-1], dim=1)
fake_input = (fake_out[:-1] + [fake_probs])[::-1]
fake_input = [t.detach() for t in fake_input]
D_opt.zero_grad()
loss_d, p_fake, p_real = loss_f.d_loss(reals_input, fake_input)
loss_d.backward()
D_opt.step()
# Optimize generator
fake_out = G(z)
fake_probs = torch.softmax(fake_out[-1], dim=1)
fake_input = (fake_out[:-1] + [fake_probs])[::-1]
G_opt.zero_grad()
reals_input = [t.detach() for t in reals_input]
loss_g = loss_f.g_loss(reals_input, fake_input)
loss_g.backward()
G_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(loss_g)
d_loss_sum += float(loss_d)
p_fake_sum += float(p_fake)
p_real_sum += float(p_real)
if args.attn:
for i, (d_gamma,
g_gamma) in enumerate(zip(D_gammas, G_gammas)):
D_gammas_sum[i] = D_gammas_sum.get(i, 0) + d_gamma
G_gammas_sum[i] = G_gammas_sum.get(i, 0) + g_gamma
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
if args.attn:
D_gammas_avg = repr_list([
gamma / cur_step
for gamma in D_gammas_sum.values()
])
G_gammas_avg = repr_list([
gamma / cur_step
for gamma in G_gammas_sum.values()
])
logging.info(
f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] '
+
#f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, '
+
f'p_fake: {p_fake_sum / cur_step:.5f}, p_real: {p_real_sum / cur_step:.5f}, '
+
(f'd_attn_gammas: [{D_gammas_avg}], g_attn_gammas: [{G_gammas_avg}], '
if args.attn else '') +
f'batches/s: {batches_per_sec:02.2f}')
g_loss_sum = d_loss_sum = 0
p_fake_sum = p_real_sum = 0
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
if global_step % args.sample_every == 0:
samples_decoded = dataset.seq_to_text(
G_sample(z_sample)[-1].argmax(1))
reals_decoded = dataset.seq_to_text(reals[:args.n_sample])
(sample_dir / f'fakes_{global_step:06d}.txt').write_text(
'\n'.join(samples_decoded))
(sample_dir / f'reals_{global_step:06d}.txt').write_text(
'\n'.join(reals_decoded))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass
def main(args):
result_dir = setup_run(args.run_name,
create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
seq_length = 32
dataset = ByteLevelTextDataset(args.dataset, seq_len=seq_length)
vocab_size = dataset.vocab_size
batches = DataLoader(dataset,
args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=args.num_workers)
inter_dim = vocab_size
# spiegel model
# G = Generator(args.latent_size, [256, 256, 128, 64, 64], out_dim=inter_dim).to(device)
# D = UnetDiscriminator(64, max_channel=256, depth=5, in_dim=inter_dim).to(device)
G = Generator(args.latent_size, [512, 512, 512, 512],
out_dim=vocab_size).to(device)
D = UnetDiscriminator(512, max_channel=512, depth=4,
in_dim=vocab_size).to(device)
G.apply(apply_spectral_norm)
D.apply(apply_spectral_norm)
G.apply(init_weights)
D.apply(init_weights)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
D_orig = D
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.5, 0.999))
D_opt = torch.optim.Adam(D.parameters(), lr=args.d_lr, betas=(0.5, 0.999))
z_sample = torch.randn(args.n_sample, args.latent_size, 1).to(device)
#loss_f = RelativisticAverageHingeLoss(D)
#loss_f = GANLoss(D)
loss_f = WGAN_GP(D)
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
p_fake_g_sum = 0
p_fake_l_sum = 0
p_real_g_sum = 0
p_real_l_sum = 0
G_attn_sum = 0
D_attn_sum = 0
start_time = time.time()
cur_step = 0
for step, reals in enumerate(batches):
reals = reals.to(device)
reals_one_hot = F.one_hot(reals,
num_classes=vocab_size).transpose(
1, 2).to(torch.float)
batch_size = reals.size(0)
z = torch.randn(batch_size, args.latent_size, 1).to(device)
tau = 0.1
# Optimize the discriminator
fake_out = G(z)
fake_out = torch.softmax(fake_out / tau, dim=1)
D_opt.zero_grad()
d_loss, p_real_g, p_real_l, p_fake_g, p_fake_l = loss_f.loss_d(
reals_one_hot, fake_out.detach())
d_loss.backward()
D_opt.step()
# Optimize generator
fake_out = G(z)
fake_out = torch.softmax(fake_out / tau, dim=1)
G_opt.zero_grad()
g_loss = loss_f.loss_g(reals_one_hot, fake_out)
g_loss.backward()
G_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(g_loss)
d_loss_sum += float(d_loss)
p_fake_g_sum += float(p_fake_g)
p_fake_l_sum += float(p_fake_l)
p_real_g_sum += float(p_real_g)
p_real_l_sum += float(p_real_l)
#G_attn_sum += float(G_orig.attn.gamma)
#D_attn_sum += float(D_orig.attn.gamma)
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
logging.info(
f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] '
+
#f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, '
+
f'p_fake_g: {p_fake_g_sum / cur_step:.5f}, p_fake_l: {p_fake_l_sum / cur_step:.5f}, '
+
f'p_real_g: {p_real_g_sum / cur_step:.5f}, p_real_l: {p_real_l_sum / cur_step:.5f}, '
+
#f'G_attn_gamma: {G_attn_sum / cur_step:.2f}, D_attn_gamma: {D_attn_sum / cur_step:.2f}, '
f'batches/s: {batches_per_sec:02.2f}')
g_loss_sum = d_loss_sum = 0
p_fake_g_sum = 0
p_fake_l_sum = 0
p_real_g_sum = 0
p_real_l_sum = 0
G_attn_sum = 0
D_attn_sum = 0
start_time = time.time()
if global_step % args.sample_every == 0:
samples = G_sample(z_sample).argmax(1)
(sample_dir / f'fakes_{global_step:06d}.txt').write_text(
'\n'.join(dataset.seq_to_text(samples)))
(sample_dir / f'reals_{global_step:06d}.txt').write_text(
'\n'.join(dataset.seq_to_text(reals[:args.n_sample])))
# (sample_dir / f'fakes_{global_step:06d}.txt').write_text('\n'.join(dataset.seq_to_text(samples)))
# (sample_dir / f'reals_{global_step:06d}.txt').write_text('\n'.join(dataset.seq_to_text(reals_decode)))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass
def main(args):
result_dir = setup_run(args.run_name,
create_dirs=['checkpoints', 'samples'])
setup_logging(result_dir / 'log.txt')
logging.info(args)
device = get_default_device(args.device)
sample_dir = result_dir / 'samples'
checkpoint_dir = result_dir / 'checkpoints'
decode = BPEDataset(args.original_dataset).seq_to_text
vq_model = torch.load(args.vq_model).to(device)
depth = vq_model.depth
num_classes = vq_model.quantize[0].n_embed
dataset = LMDBDataset(args.vq_dataset)
batches = DataLoader(dataset,
args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=args.num_workers)
G = Generator(args.latent_size, [256, 256, 256, 256],
num_classes,
attn=args.attn).to(device)
D = Discriminator([256, 256, 256, 256],
num_classes,
use_embeddings=False,
attn=args.attn).to(device)
if args.attn:
D_gammas = list(
map(attrgetter('gamma'),
filter(lambda m: isinstance(m, SelfAttention), D.modules())))
G_gammas = list(
map(attrgetter('gamma'),
filter(lambda m: isinstance(m, SelfAttention), G.modules())))
G.apply(init_weights)
G.apply(apply_spectral_norm)
D.apply(init_weights)
D.apply(apply_spectral_norm)
G.train()
D.train()
(result_dir / 'G.txt').write_text(str(G))
(result_dir / 'D.txt').write_text(str(D))
if args.use_ema:
G_shadow = copy.deepcopy(G)
G_sample = G_shadow
update_average(G_shadow, G, beta=0.0)
else:
G_sample = G
G_orig = G
if args.data_parallel:
G = nn.DataParallel(G)
D = nn.DataParallel(D)
G_opt = torch.optim.Adam(G.parameters(), lr=args.g_lr, betas=(0.5, 0.999))
D_opt = torch.optim.Adam(D.parameters(), lr=args.d_lr, betas=(0.5, 0.999))
z_sample = torch.randn(args.n_sample, args.latent_size, 1).to(device)
code_noise = CategoricalNoise(num_classes, 0.0)
try:
global_step = 0
for epoch in range(args.epochs):
g_loss_sum = 0
d_loss_sum = 0
p_fake_sum = 0
p_real_sum = 0
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
cur_step = 0
for step, codes in enumerate(batches):
#current_grow_index = min(global_step // args.steps_per_stage, depth - 1)
current_grow_index = 3
interpol = (global_step %
args.steps_per_stage) / args.steps_per_stage
code = codes[-(current_grow_index + 1)]
code = code.to(device)
code_noise.p = 0.3 * (1.0 - min(1.0, interpol * 2))
#code = code_noise(code)
z = torch.randn(code.size(0), args.latent_size, 1).to(device)
fake_logits = G(z, extract_at_grow_index=current_grow_index)
G_opt.zero_grad()
D_opt.zero_grad()
loss_d, loss_g, p_fake, p_real = multinomial_bgan_loss(
D,
fake_logits,
code,
n_samples=args.n_mc_samples,
tau=args.mc_sample_tau)
torch.autograd.backward([loss_d, loss_g])
G_opt.step()
D_opt.step()
if args.use_ema:
update_average(G_shadow, G_orig, beta=0.999)
g_loss_sum += float(loss_g)
d_loss_sum += float(loss_d)
p_fake_sum += float(p_fake)
p_real_sum += float(p_real)
if args.attn:
for i, (d_gamma,
g_gamma) in enumerate(zip(D_gammas, G_gammas)):
D_gammas_sum[i] = D_gammas_sum.get(i, 0) + d_gamma
G_gammas_sum[i] = G_gammas_sum.get(i, 0) + g_gamma
if global_step % args.log_every == 0:
cur_step = min(step + 1, args.log_every)
batches_per_sec = cur_step / (time.time() - start_time)
if args.attn:
D_gammas_avg = repr_list([
gamma / cur_step
for gamma in D_gammas_sum.values()
])
G_gammas_avg = repr_list([
gamma / cur_step
for gamma in G_gammas_sum.values()
])
logging.info(
f'[EPOCH {epoch + 1:03d}] [{step:05d} / {len(batches):05d}] '
+ f'grow_index: {current_grow_index}/{depth - 1}, ' +
f'loss_d: {d_loss_sum / cur_step:.5f}, loss_g: {g_loss_sum / cur_step:.5f}, '
+
f'p_fake: {p_fake_sum / cur_step:.5f}, p_real: {p_real_sum / cur_step:.5f}, '
+
(f'd_attn_gammas: [{D_gammas_avg}], g_attn_gammas: [{G_gammas_avg}], '
if args.attn else '') +
f'batches/s: {batches_per_sec:02.2f}, code_noise_p: {code_noise.p:.2f}'
)
g_loss_sum = d_loss_sum = 0
p_fake_sum = p_real_sum = 0
D_gammas_sum = OrderedDict()
G_gammas_sum = OrderedDict()
start_time = time.time()
if global_step % args.sample_every == 0:
current_depth = depth - 1 - current_grow_index
samples_codes = G_sample(
z_sample,
extract_at_grow_index=current_grow_index).argmax(1)
samples_logits = vq_model.decode_code(
samples_codes, current_depth)
samples_decoded = decode(samples_logits.argmax(-1))
reals_logits = vq_model.decode_code(
code[:args.n_sample], current_depth)
reals_decoded = decode(reals_logits.argmax(-1))
(sample_dir /
f'fakes_{current_grow_index}_{global_step:06d}.txt'
).write_text('\n'.join(samples_decoded))
(sample_dir /
f'reals_{current_grow_index}_{global_step:06d}.txt'
).write_text('\n'.join(reals_decoded))
cur_step += 1
global_step += 1
torch.save(G, str(checkpoint_dir / f'G_{global_step:06d}.pth'))
torch.save(D, str(checkpoint_dir / f'D_{global_step:06d}.pth'))
except KeyboardInterrupt:
pass