# --------------------------------------------------------------- # Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved. # # This work is licensed under the NVIDIA Source Code License # for Denoising Diffusion GAN. To view a copy of this license, see the LICENSE file. # --------------------------------------------------------------- import torch from glob import glob import argparse import numpy as np import json import os import time import torch.nn as nn import torch.nn.functional as F import torch.optim as optim import torchvision import torchvision.transforms as transforms from torchvision.datasets import CIFAR10, ImageFolder from datasets_prep.lsun import LSUN from datasets_prep.stackmnist_data import StackedMNIST, _data_transforms_stacked_mnist from datasets_prep.lmdb_datasets import LMDBDataset from torch.multiprocessing import Process import torch.distributed as dist import shutil import logging from encoder import build_encoder from utils import ResampledShards2 from torch.utils.tensorboard import SummaryWriter def log_and_continue(exn): logging.warning(f'Handling webdataset error ({repr(exn)}). Ignoring.') return True def copy_source(file, output_dir): shutil.copyfile(file, os.path.join(output_dir, os.path.basename(file))) def broadcast_params(params): for param in params: dist.broadcast(param.data, src=0) #%% Diffusion coefficients def var_func_vp(t, beta_min, beta_max): log_mean_coeff = -0.25 * t ** 2 * (beta_max - beta_min) - 0.5 * t * beta_min var = 1. - torch.exp(2. * log_mean_coeff) return var def var_func_geometric(t, beta_min, beta_max): return beta_min * ((beta_max / beta_min) ** t) def extract(input, t, shape): out = torch.gather(input, 0, t) reshape = [shape[0]] + [1] * (len(shape) - 1) out = out.reshape(*reshape) return out def get_time_schedule(args, device): n_timestep = args.num_timesteps eps_small = 1e-3 t = np.arange(0, n_timestep + 1, dtype=np.float64) t = t / n_timestep t = torch.from_numpy(t) * (1. - eps_small) + eps_small return t.to(device) def get_sigma_schedule(args, device): n_timestep = args.num_timesteps beta_min = args.beta_min beta_max = args.beta_max eps_small = 1e-3 t = np.arange(0, n_timestep + 1, dtype=np.float64) t = t / n_timestep t = torch.from_numpy(t) * (1. - eps_small) + eps_small if args.use_geometric: var = var_func_geometric(t, beta_min, beta_max) else: var = var_func_vp(t, beta_min, beta_max) alpha_bars = 1.0 - var betas = 1 - alpha_bars[1:] / alpha_bars[:-1] first = torch.tensor(1e-8) betas = torch.cat((first[None], betas)).to(device) betas = betas.type(torch.float32) sigmas = betas**0.5 a_s = torch.sqrt(1-betas) return sigmas, a_s, betas class Diffusion_Coefficients(): def __init__(self, args, device): self.sigmas, self.a_s, _ = get_sigma_schedule(args, device=device) self.a_s_cum = np.cumprod(self.a_s.cpu()) self.sigmas_cum = np.sqrt(1 - self.a_s_cum ** 2) self.a_s_prev = self.a_s.clone() self.a_s_prev[-1] = 1 self.a_s_cum = self.a_s_cum.to(device) self.sigmas_cum = self.sigmas_cum.to(device) self.a_s_prev = self.a_s_prev.to(device) def q_sample(coeff, x_start, t, *, noise=None): """ Diffuse the data (t == 0 means diffused for t step) """ if noise is None: noise = torch.randn_like(x_start) x_t = extract(coeff.a_s_cum, t, x_start.shape) * x_start + \ extract(coeff.sigmas_cum, t, x_start.shape) * noise return x_t def q_sample_pairs(coeff, x_start, t): """ Generate a pair of disturbed images for training :param x_start: x_0 :param t: time step t :return: x_t, x_{t+1} """ noise = torch.randn_like(x_start) x_t = q_sample(coeff, x_start, t) x_t_plus_one = extract(coeff.a_s, t+1, x_start.shape) * x_t + \ extract(coeff.sigmas, t+1, x_start.shape) * noise return x_t, x_t_plus_one #%% posterior sampling class Posterior_Coefficients(): def __init__(self, args, device): _, _, self.betas = get_sigma_schedule(args, device=device) #we don't need the zeros self.betas = self.betas.type(torch.float32)[1:] self.alphas = 1 - self.betas self.alphas_cumprod = torch.cumprod(self.alphas, 0) self.alphas_cumprod_prev = torch.cat( (torch.tensor([1.], dtype=torch.float32,device=device), self.alphas_cumprod[:-1]), 0 ) self.posterior_variance = self.betas * (1 - self.alphas_cumprod_prev) / (1 - self.alphas_cumprod) self.sqrt_alphas_cumprod = torch.sqrt(self.alphas_cumprod) self.sqrt_recip_alphas_cumprod = torch.rsqrt(self.alphas_cumprod) self.sqrt_recipm1_alphas_cumprod = torch.sqrt(1 / self.alphas_cumprod - 1) self.posterior_mean_coef1 = (self.betas * torch.sqrt(self.alphas_cumprod_prev) / (1 - self.alphas_cumprod)) self.posterior_mean_coef2 = ((1 - self.alphas_cumprod_prev) * torch.sqrt(self.alphas) / (1 - self.alphas_cumprod)) self.posterior_log_variance_clipped = torch.log(self.posterior_variance.clamp(min=1e-20)) def sample_posterior(coefficients, x_0,x_t, t): def q_posterior(x_0, x_t, t): mean = ( extract(coefficients.posterior_mean_coef1, t, x_t.shape) * x_0 + extract(coefficients.posterior_mean_coef2, t, x_t.shape) * x_t ) var = extract(coefficients.posterior_variance, t, x_t.shape) log_var_clipped = extract(coefficients.posterior_log_variance_clipped, t, x_t.shape) return mean, var, log_var_clipped def p_sample(x_0, x_t, t): mean, _, log_var = q_posterior(x_0, x_t, t) noise = torch.randn_like(x_t) nonzero_mask = (1 - (t == 0).type(torch.float32)) return mean + nonzero_mask[:,None,None,None] * torch.exp(0.5 * log_var) * noise sample_x_pos = p_sample(x_0, x_t, t) return sample_x_pos def sample_from_model(coefficients, generator, n_time, x_init, T, opt, cond=None): x = x_init with torch.no_grad(): for i in reversed(range(n_time)): t = torch.full((x.size(0),), i, dtype=torch.int64).to(x.device) t_time = t latent_z = torch.randn(x.size(0), opt.nz, device=x.device) x_0 = generator(x, t_time, latent_z, cond=cond) x_new = sample_posterior(coefficients, x_0, x, t) x = x_new.detach() return x from contextlib import suppress def filter_no_caption(sample): return 'txt' in sample def get_autocast(precision): if precision == 'amp': return torch.cuda.amp.autocast elif precision == 'amp_bfloat16': return lambda: torch.cuda.amp.autocast(dtype=torch.bfloat16) else: return suppress def train(rank, gpu, args): from score_sde.models.discriminator import Discriminator_small, Discriminator_large, CondAttnDiscriminator, SmallCondAttnDiscriminator from score_sde.models.projected_discriminator import ProjectedDiscriminator from score_sde.models.ncsnpp_generator_adagn import NCSNpp from EMA import EMA #torch.manual_seed(args.seed + rank) #torch.cuda.manual_seed(args.seed + rank) #torch.cuda.manual_seed_all(args.seed + rank) device = "cuda" autocast = get_autocast(args.precision) batch_size = args.batch_size nz = args.nz #latent dimension if args.dataset == 'cifar10': dataset = CIFAR10('./data', train=True, transform=transforms.Compose([ transforms.Resize(32), transforms.RandomHorizontalFlip(), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5))]), download=True) elif args.dataset == 'stackmnist': train_transform, valid_transform = _data_transforms_stacked_mnist() dataset = StackedMNIST(root='./data', train=True, download=False, transform=train_transform) elif args.dataset == 'lsun': train_transform = transforms.Compose([ transforms.Resize(args.image_size), transforms.CenterCrop(args.image_size), transforms.RandomHorizontalFlip(), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) train_data = LSUN(root='/datasets/LSUN/', classes=['church_outdoor_train'], transform=train_transform) subset = list(range(0, 120000)) dataset = torch.utils.data.Subset(train_data, subset) elif args.dataset == 'celeba_256': train_transform = transforms.Compose([ transforms.Resize(args.image_size), transforms.RandomHorizontalFlip(), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) dataset = LMDBDataset(root='/datasets/celeba-lmdb/', name='celeba', train=True, transform=train_transform) elif args.dataset == "image_folder": train_transform = transforms.Compose([ transforms.Resize(args.image_size), transforms.CenterCrop(args.image_size), # transforms.RandomHorizontalFlip(), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) dataset = ImageFolder(root=args.dataset_root, transform=train_transform) elif args.dataset == 'wds': import webdataset as wds if args.preprocessing == "resize": train_transform = transforms.Compose([ transforms.Resize(args.image_size), transforms.CenterCrop(args.image_size), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) elif args.preprocessing == "random_resized_crop_v1": train_transform = transforms.Compose([ transforms.RandomResizedCrop(args.image_size, scale=(0.95, 1.0), interpolation=3), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) elif args.preprocessing == "simple_random_crop": train_transform = transforms.Compose([ transforms.RandomCrop(args.image_size, interpolation=3), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) elif args.preprocessing == "simple_random_crop_v2": train_transform = transforms.Compose([ transforms.Resize(args.image_size), transforms.RandomCrop(args.image_size, interpolation=3), transforms.ToTensor(), transforms.Normalize((0.5,0.5,0.5), (0.5,0.5,0.5)) ]) else: raise ValueError(args.preprocessing) shards = glob(os.path.join(args.dataset_root, "*.tar")) if os.path.isdir(args.dataset_root) else args.dataset_root pipeline = [ResampledShards2(shards)] pipeline.extend([ wds.split_by_node, wds.split_by_worker, wds.tarfile_to_samples(handler=log_and_continue), wds.shuffle( bufsize=5000, initial=1000, ), ]) pipeline.extend([ wds.select(filter_no_caption), wds.decode("pilrgb", handler=log_and_continue), wds.rename(image="jpg;png;webp"), wds.map_dict(image=train_transform), wds.to_tuple("image","txt"), wds.batched(batch_size, partial=False), ]) dataset = wds.DataPipeline(*pipeline) data_loader = wds.WebLoader( dataset, batch_size=None, shuffle=False, num_workers=1, ) if args.dataset != "wds": train_sampler = torch.utils.data.distributed.DistributedSampler( dataset, num_replicas=args.world_size, rank=rank ) data_loader = torch.utils.data.DataLoader( dataset, batch_size=batch_size, shuffle=False, num_workers=4, drop_last=True, pin_memory=True, sampler=train_sampler, ) text_encoder = build_encoder(name=args.text_encoder, masked_mean=args.masked_mean).to(device) args.cond_size = text_encoder.output_size netG = NCSNpp(args).to(device) nb_params = 0 for param in netG.parameters(): nb_params += param.flatten().shape[0] print("Number of generator parameters:", nb_params) if args.discr_type == "small": netD = Discriminator_small(nc = 2*args.num_channels, ngf = args.ngf, t_emb_dim = args.t_emb_dim, cond_size=text_encoder.output_size, act=nn.LeakyReLU(0.2)).to(device) elif args.discr_type == "small_cond_attn": netD = SmallCondAttnDiscriminator(nc = 2*args.num_channels, ngf = args.ngf, t_emb_dim = args.t_emb_dim, cond_size=text_encoder.output_size, act=nn.LeakyReLU(0.2)).to(device) elif args.discr_type == "large": netD = Discriminator_large(nc = 2*args.num_channels, ngf = args.ngf, t_emb_dim = args.t_emb_dim, cond_size=text_encoder.output_size, act=nn.LeakyReLU(0.2)).to(device) elif args.discr_type == "large_attn_pool": # Discriminator with Attention Pool based discriminator for text conditioning netD = Discriminator_large(nc = 2*args.num_channels, ngf = args.ngf, t_emb_dim = args.t_emb_dim, cond_size=text_encoder.output_size, attn_pool=True, act=nn.LeakyReLU(0.2)).to(device) elif args.discr_type == "large_cond_attn": # Discriminator with Cross-Attention based discriminator for text conditioning netD = CondAttnDiscriminator( nc = 2*args.num_channels, ngf = args.ngf, t_emb_dim = args.t_emb_dim, cond_size=text_encoder.output_size, act=nn.LeakyReLU(0.2)).to(device) elif args.discr_type == "projected_gan": netD = ProjectedDiscriminator( num_discs=4, backbone_kwargs={"cond_size": text_encoder.output_size} ) netD = netD.to(device) if args.world_size > 1: broadcast_params(netG.parameters()) broadcast_params(netD.parameters()) if args.fsdp: from fairscale.nn.checkpoint.checkpoint_activations import checkpoint_wrapper from fairscale.nn.data_parallel import FullyShardedDataParallel as FSDP netG = FSDP( netG, flatten_parameters=True, verbose=True, ) optimizerD = optim.Adam(netD.parameters(), lr=args.lr_d, betas = (args.beta1, args.beta2)) optimizerG = optim.Adam(netG.parameters(), lr=args.lr_g, betas = (args.beta1, args.beta2)) if args.use_ema: optimizerG = EMA(optimizerG, ema_decay=args.ema_decay, memory_efficient=args.grad_checkpointing) schedulerG = torch.optim.lr_scheduler.CosineAnnealingLR(optimizerG, args.num_epoch, eta_min=1e-5) schedulerD = torch.optim.lr_scheduler.CosineAnnealingLR(optimizerD, args.num_epoch, eta_min=1e-5) if args.fsdp: netD = nn.parallel.DistributedDataParallel(netD, device_ids=[gpu]) else: if args.world_size > 1: netG = nn.parallel.DistributedDataParallel(netG, device_ids=[gpu]) netD = nn.parallel.DistributedDataParallel(netD, device_ids=[gpu], find_unused_parameters=args.discr_type=="projected_gan") #if args.discr_type == "projected_gan": # netD._set_static_graph() #if args.grad_checkpointing: #from fairscale.nn.checkpoint.checkpoint_activations import checkpoint_wrapper #netG = checkpoint_wrapper(netG) exp = args.exp parent_dir = "./saved_info/dd_gan/{}".format(args.dataset) exp_path = os.path.join(parent_dir,exp) if rank == 0: if not os.path.exists(exp_path): os.makedirs(exp_path) copy_source(__file__, exp_path) shutil.copytree('score_sde/models', os.path.join(exp_path, 'score_sde/models')) coeff = Diffusion_Coefficients(args, device) pos_coeff = Posterior_Coefficients(args, device) T = get_time_schedule(args, device) checkpoint_file = os.path.join(exp_path, 'content.pth') if rank == 0: log_writer = SummaryWriter(exp_path) if args.resume and os.path.exists(checkpoint_file): checkpoint = torch.load(checkpoint_file, map_location="cpu") init_epoch = checkpoint['epoch'] epoch = init_epoch netG.load_state_dict(checkpoint['netG_dict']) # load G optimizerG.load_state_dict(checkpoint['optimizerG']) schedulerG.load_state_dict(checkpoint['schedulerG']) # load D netD.load_state_dict(checkpoint['netD_dict']) optimizerD.load_state_dict(checkpoint['optimizerD']) schedulerD.load_state_dict(checkpoint['schedulerD']) global_step = checkpoint['global_step'] if rank == 0: print("=> loaded checkpoint (epoch {})" .format(checkpoint['epoch'])) else: global_step, epoch, init_epoch = 0, 0, 0 use_cond_attn_discr = args.discr_type in ("large_cond_attn", "small_cond_attn", "large_attn_pool", "projected_gan") for epoch in range(init_epoch, args.num_epoch+1): if args.dataset == "wds": os.environ["WDS_EPOCH"] = str(epoch) else: train_sampler.set_epoch(epoch) for iteration, (x, y) in enumerate(data_loader): t0 = time.time() #print(x.shape) if args.dataset != "wds": y = [str(yi) for yi in y.tolist()] if args.classifier_free_guidance_proba: u = (np.random.uniform(size=len(y)) <= args.classifier_free_guidance_proba).tolist() y = ["" if ui else yi for yi,ui in zip(y, u)] with torch.no_grad(): cond_pooled, cond, cond_mask = text_encoder(y, return_only_pooled=False) for p in netD.parameters(): p.requires_grad = True netD.zero_grad() #sample from p(x_0) real_data = x.to(device, non_blocking=True) #sample t t = torch.randint(0, args.num_timesteps, (real_data.size(0),), device=device) x_t, x_tp1 = q_sample_pairs(coeff, real_data, t) x_t.requires_grad = True cond_for_discr = (cond_pooled, cond, cond_mask) if use_cond_attn_discr else cond_pooled if args.grad_penalty_cond: if use_cond_attn_discr: #cond_pooled.requires_grad = True cond.requires_grad = True #cond_mask.requires_grad = True else: cond_for_discr.requires_grad = True # train with real with autocast(): D_real = netD(x_t, t, x_tp1.detach(), cond=cond_for_discr).view(-1) errD_real = F.softplus(-D_real) errD_real = errD_real.mean() errD_real.backward(retain_graph=True) grad_penalty = None if args.lazy_reg is None: if args.grad_penalty_cond: inputs = (x_t,) + (cond,) if use_cond_attn_discr else (cond_for_discr,) grad_real = torch.autograd.grad( outputs=D_real.sum(), inputs=inputs, create_graph=True )[0] grad_real = torch.cat([g.view(g.size(0), -1) for g in grad_real]) grad_penalty = (grad_real.norm(2, dim=1) ** 2).mean() grad_penalty = args.r1_gamma / 2 * grad_penalty grad_penalty.backward() else: grad_real = torch.autograd.grad( outputs=D_real.sum(), inputs=x_t, create_graph=True )[0] grad_penalty = ( grad_real.view(grad_real.size(0), -1).norm(2, dim=1) ** 2 ).mean() grad_penalty = args.r1_gamma / 2 * grad_penalty grad_penalty.backward() else: if global_step % args.lazy_reg == 0: if args.grad_penalty_cond: inputs = (x_t,) + (cond,) if use_cond_attn_discr else (cond_for_discr,) grad_real = torch.autograd.grad( outputs=D_real.sum(), inputs=inputs, create_graph=True )[0] grad_real = torch.cat([g.view(g.size(0), -1) for g in grad_real]) grad_penalty = (grad_real.norm(2, dim=1) ** 2).mean() grad_penalty = args.r1_gamma / 2 * grad_penalty grad_penalty.backward() else: grad_real = torch.autograd.grad( outputs=D_real.sum(), inputs=x_t, create_graph=True )[0] grad_penalty = ( grad_real.view(grad_real.size(0), -1).norm(2, dim=1) ** 2 ).mean() grad_penalty = args.r1_gamma / 2 * grad_penalty grad_penalty.backward() # train with fake latent_z = torch.randn(batch_size, nz, device=device) with autocast(): if args.grad_checkpointing: ginp = x_tp1.detach() ginp.requires_grad = True latent_z.requires_grad = True cond_pooled.requires_grad = True cond.requires_grad = True #cond_mask.requires_grad = True x_0_predict = netG(ginp, t, latent_z, cond=(cond_pooled, cond, cond_mask)) else: x_0_predict = netG(x_tp1.detach(), t, latent_z, cond=(cond_pooled, cond, cond_mask)) x_pos_sample = sample_posterior(pos_coeff, x_0_predict, x_tp1, t) output = netD(x_pos_sample, t, x_tp1.detach(), cond=cond_for_discr).view(-1) errD_fake = F.softplus(output) errD_fake = errD_fake.mean() if args.mismatch_loss: # following https://github.com/tobran/DF-GAN/blob/bc38a4f795c294b09b4ef5579cd4ff78807e5b96/code/lib/modules.py, # we add a discr loss for (real image, non matching text) #inds = torch.flip(torch.arange(len(x_t)), dims=(0,)) with autocast(): inds = torch.cat([torch.arange(1,len(x_t)),torch.arange(1)]) cond_for_discr_mis = (cond_pooled[inds], cond[inds], cond_mask[inds]) if use_cond_attn_discr else cond_pooled[inds] D_real_mis = netD(x_t, t, x_tp1.detach(), cond=cond_for_discr_mis).view(-1) errD_real_mis = F.softplus(D_real_mis) errD_real_mis = errD_real_mis.mean() errD_fake = errD_fake * 0.5 + errD_real_mis * 0.5 errD_fake.backward() errD = errD_real + errD_fake # Update D optimizerD.step() #update G for p in netD.parameters(): p.requires_grad = False netG.zero_grad() t = torch.randint(0, args.num_timesteps, (real_data.size(0),), device=device) x_t, x_tp1 = q_sample_pairs(coeff, real_data, t) latent_z = torch.randn(batch_size, nz,device=device) with autocast(): if args.grad_checkpointing: ginp = x_tp1.detach() ginp.requires_grad = True latent_z.requires_grad = True cond_pooled.requires_grad = True cond.requires_grad = True #cond_mask.requires_grad = True x_0_predict = netG(ginp, t, latent_z, cond=(cond_pooled, cond, cond_mask)) else: x_0_predict = netG(x_tp1.detach(), t, latent_z, cond=(cond_pooled, cond, cond_mask)) x_pos_sample = sample_posterior(pos_coeff, x_0_predict, x_tp1, t) output = netD(x_pos_sample, t, x_tp1.detach(), cond=cond_for_discr).view(-1) errG = F.softplus(-output) errG = errG.mean() errG.backward() optimizerG.step() if (iteration % 10 == 0) and (rank == 0): log_writer.add_scalar('g_loss', errG.item(), global_step) log_writer.add_scalar('d_loss', errD.item(), global_step) if grad_penalty is not None: log_writer.add_scalar('grad_penalty', grad_penalty.item(), global_step) global_step += 1 if iteration % 100 == 0: if rank == 0: print('epoch {} iteration{}, G Loss: {}, D Loss: {}'.format(epoch,iteration, errG.item(), errD.item())) print('Global step:', global_step) dt = time.time() - t0 print('Time per iteration: ', dt) if iteration % 1000 == 0: x_t_1 = torch.randn_like(real_data) with autocast(): fake_sample = sample_from_model(pos_coeff, netG, args.num_timesteps, x_t_1, T, args, cond=(cond_pooled, cond, cond_mask)) if rank == 0: torchvision.utils.save_image(fake_sample, os.path.join(exp_path, 'sample_discrete_epoch_{}_iteration_{}.png'.format(epoch, iteration)), normalize=True) if args.save_content: if args.world_size > 1: dist.barrier() if rank == 0: print('Saving content.') def to_cpu(d): for k, v in d.items(): d[k] = v.cpu() return d if args.fsdp: netG_state_dict = to_cpu(netG.state_dict()) netD_state_dict = to_cpu(netD.state_dict()) #netG_optim_state_dict = (netG.gather_full_optim_state_dict(optimizerG)) netG_optim_state_dict = optimizerG.state_dict() #print(netG_optim_state_dict) netD_optim_state_dict = (optimizerD.state_dict()) content = {'epoch': epoch + 1, 'global_step': global_step, 'args': args, 'netG_dict': netG_state_dict, 'optimizerG': netG_optim_state_dict, 'schedulerG': schedulerG.state_dict(), 'netD_dict': netD_state_dict, 'optimizerD': netD_optim_state_dict, 'schedulerD': schedulerD.state_dict()} if rank == 0: torch.save(content, os.path.join(exp_path, 'content.pth')) torch.save(content, os.path.join(exp_path, 'content_backup.pth')) if args.use_ema: optimizerG.swap_parameters_with_ema(store_params_in_ema=True) if args.use_ema and rank == 0: torch.save(netG.state_dict(), os.path.join(exp_path, 'netG_{}.pth'.format(epoch))) if args.use_ema: optimizerG.swap_parameters_with_ema(store_params_in_ema=True) #if args.use_ema: # dist.barrier() print("Saved content") else: if rank == 0: content = {'epoch': epoch + 1, 'global_step': global_step, 'args': args, 'netG_dict': netG.state_dict(), 'optimizerG': optimizerG.state_dict(), 'schedulerG': schedulerG.state_dict(), 'netD_dict': netD.state_dict(), 'optimizerD': optimizerD.state_dict(), 'schedulerD': schedulerD.state_dict()} torch.save(content, os.path.join(exp_path, 'content.pth')) torch.save(content, os.path.join(exp_path, 'content_backup.pth')) state_content = {'epoch': epoch + 1, 'global_step': global_step} with open(os.path.join(exp_path, 'netG_{}.json'.format(epoch)), "w") as fd: fd.write(json.dumps(state_content)) if args.use_ema: optimizerG.swap_parameters_with_ema(store_params_in_ema=True) torch.save(netG.state_dict(), os.path.join(exp_path, 'netG_{}.pth'.format(epoch))) if args.use_ema: optimizerG.swap_parameters_with_ema(store_params_in_ema=True) if not args.no_lr_decay: schedulerG.step() schedulerD.step() def init_processes(rank, size, fn, args): """ Initialize the distributed environment. """ import os if size == 1: args.rank = 0 args.world_size = 1 args.local_rank = 0 fn(rank,args.local_rank, args) else: args.rank = int(os.environ['SLURM_PROCID']) args.world_size = int(os.getenv("SLURM_NTASKS")) args.local_rank = int(os.environ['SLURM_LOCALID']) print(args.rank, args.world_size) args.master_address = os.getenv("SLURM_LAUNCH_NODE_IPADDR") os.environ['MASTER_ADDR'] = args.master_address os.environ['MASTER_PORT'] = "12345" torch.cuda.set_device(args.local_rank) gpu = args.local_rank dist.init_process_group(backend='nccl', init_method='env://', rank=rank, world_size=args.world_size) fn(rank, gpu, args) dist.barrier() cleanup() def cleanup(): dist.destroy_process_group() #%% if __name__ == '__main__': parser = argparse.ArgumentParser('ddgan parameters') parser.add_argument('--seed', type=int, default=1024, help='seed used for initialization') parser.add_argument('--resume', action='store_true',default=False) parser.add_argument('--masked_mean', action='store_true',default=False, help="use masked mean to pool from t5-based text encoder") parser.add_argument('--mismatch_loss', action='store_true',default=False, help="use mismatch loss") parser.add_argument('--text_encoder', type=str, default="google/t5-v1_1-base") parser.add_argument('--cross_attention', action='store_true',default=False, help="use cross attention in generator") parser.add_argument('--cross_attention_block', default="basic", help="cross attention block type") parser.add_argument('--fsdp', action='store_true',default=False, help='use FSDP') parser.add_argument('--grad_checkpointing', action='store_true',default=False, help='use grad checkpointing') parser.add_argument('--image_size', type=int, default=32, help='size of image') parser.add_argument('--num_channels', type=int, default=3, help='channel of image') parser.add_argument('--centered', action='store_false', default=True, help='-1,1 scale') parser.add_argument('--use_geometric', action='store_true',default=False) parser.add_argument('--beta_min', type=float, default= 0.1, help='beta_min for diffusion') parser.add_argument('--beta_max', type=float, default=20., help='beta_max for diffusion') parser.add_argument('--classifier_free_guidance_proba', type=float, default=0.0) parser.add_argument('--num_channels_dae', type=int, default=128, help='number of initial channels in denosing model generator') parser.add_argument('--n_mlp', type=int, default=3, help='number of mlp layers for z') parser.add_argument('--ch_mult', nargs='+', type=int, help='channel multiplier') parser.add_argument('--num_res_blocks', type=int, default=2, help='number of resnet blocks per scale') parser.add_argument('--attn_resolutions', default=(16,), nargs='+', type=int, help='resolution of applying attention') parser.add_argument('--dropout', type=float, default=0., help='drop-out rate') parser.add_argument('--resamp_with_conv', action='store_false', default=True, help='always up/down sampling with conv') parser.add_argument('--conditional', action='store_false', default=True, help='noise conditional') parser.add_argument('--fir', action='store_false', default=True, help='FIR') parser.add_argument('--fir_kernel', default=[1, 3, 3, 1], help='FIR kernel') parser.add_argument('--skip_rescale', action='store_false', default=True, help='skip rescale') parser.add_argument('--resblock_type', default='biggan', help='tyle of resnet block, choice in biggan and ddpm') parser.add_argument('--progressive', type=str, default='none', choices=['none', 'output_skip', 'residual'], help='progressive type for output') parser.add_argument('--progressive_input', type=str, default='residual', choices=['none', 'input_skip', 'residual'], help='progressive type for input') parser.add_argument('--progressive_combine', type=str, default='sum', choices=['sum', 'cat'], help='progressive combine method.') parser.add_argument('--embedding_type', type=str, default='positional', choices=['positional', 'fourier'], help='type of time embedding') parser.add_argument('--fourier_scale', type=float, default=16., help='scale of fourier transform') parser.add_argument('--not_use_tanh', action='store_true',default=False) #geenrator and training parser.add_argument('--exp', default='experiment_cifar_default', help='name of experiment') parser.add_argument('--dataset', default='cifar10', help='name of dataset') parser.add_argument('--dataset_root', default='', help='name of dataset') parser.add_argument('--nz', type=int, default=100) parser.add_argument('--num_timesteps', type=int, default=4) parser.add_argument('--z_emb_dim', type=int, default=256) parser.add_argument('--t_emb_dim', type=int, default=256) parser.add_argument('--batch_size', type=int, default=128, help='input batch size') parser.add_argument('--num_epoch', type=int, default=1200) parser.add_argument('--ngf', type=int, default=64) parser.add_argument('--lr_g', type=float, default=1.5e-4, help='learning rate g') parser.add_argument('--lr_d', type=float, default=1e-4, help='learning rate d') parser.add_argument('--beta1', type=float, default=0.5, help='beta1 for adam') parser.add_argument('--beta2', type=float, default=0.9, help='beta2 for adam') parser.add_argument('--no_lr_decay',action='store_true', default=False) parser.add_argument('--grad_penalty_cond', action='store_true',default=False, help="cond based grad") parser.add_argument('--use_ema', action='store_true', default=False, help='use EMA or not') parser.add_argument('--ema_decay', type=float, default=0.9999, help='decay rate for EMA') parser.add_argument('--r1_gamma', type=float, default=0.05, help='coef for r1 reg') parser.add_argument('--lazy_reg', type=int, default=None, help='lazy regulariation.') parser.add_argument('--save_content', action='store_true',default=False) parser.add_argument('--save_content_every', type=int, default=50, help='save content for resuming every x epochs') parser.add_argument('--save_ckpt_every', type=int, default=25, help='save ckpt every x epochs') parser.add_argument('--discr_type', type=str, default="large") parser.add_argument('--preprocessing', type=str, default="resize") parser.add_argument('--precision', type=str, default="fp32") ###ddp parser.add_argument('--num_proc_node', type=int, default=1, help='The number of nodes in multi node env.') parser.add_argument('--num_process_per_node', type=int, default=1, help='number of gpus') parser.add_argument('--node_rank', type=int, default=0, help='The index of node.') parser.add_argument('--local_rank', type=int, default=0, help='rank of process in the node') parser.add_argument('--master_address', type=str, default='127.0.0.1', help='address for master') args = parser.parse_args() if 'SLURM_NTASKS' in os.environ: args.world_size = int(os.getenv("SLURM_NTASKS")) args.rank = int(os.environ['SLURM_PROCID']) else: args.world_size = 1 args.rank = 0 init_processes(args.rank, args.world_size, train, args)