# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from __future__ import absolute_import from __future__ import division from __future__ import print_function import os import sys import numpy as np __dir__ = os.path.dirname(os.path.abspath(__file__)) sys.path.append(os.path.abspath(os.path.join(__dir__, '../../'))) import time import platform import datetime import argparse import paddle import paddle.nn as nn import paddle.distributed as dist from visualdl import LogWriter from ppcls.utils.check import check_gpu from ppcls.utils.misc import AverageMeter from ppcls.utils import logger from ppcls.utils.logger import init_logger from ppcls.utils.config import print_config from ppcls.data import build_dataloader from ppcls.arch import build_model from ppcls.arch import apply_to_static from ppcls.loss import build_loss from ppcls.metric import build_metrics from ppcls.optimizer import build_optimizer from ppcls.utils.save_load import load_dygraph_pretrain, load_dygraph_pretrain_from_url from ppcls.utils.save_load import init_model from ppcls.utils import save_load from ppcls.data.utils.get_image_list import get_image_list from ppcls.data.postprocess import build_postprocess from ppcls.data import create_operators class Trainer(object): def __init__(self, config, mode="train"): self.mode = mode self.config = config self.output_dir = self.config['Global']['output_dir'] log_file = os.path.join(self.output_dir, self.config["Arch"]["name"], f"{mode}.log") init_logger(name='root', log_file=log_file) print_config(config) # set device assert self.config["Global"]["device"] in ["cpu", "gpu", "xpu"] self.device = paddle.set_device(self.config["Global"]["device"]) # set dist self.config["Global"][ "distributed"] = paddle.distributed.get_world_size() != 1 if self.config["Global"]["distributed"]: dist.init_parallel_env() if "Head" in self.config["Arch"]: self.is_rec = True else: self.is_rec = False self.model = build_model(self.config["Arch"]) # set @to_static for benchmark, skip this by default. apply_to_static(self.config, self.model) if self.config["Global"]["pretrained_model"] is not None: if self.config["Global"]["pretrained_model"].startswith("http"): load_dygraph_pretrain_from_url( self.model, self.config["Global"]["pretrained_model"]) else: load_dygraph_pretrain( self.model, self.config["Global"]["pretrained_model"]) if self.config["Global"]["distributed"]: self.model = paddle.DataParallel(self.model) self.vdl_writer = None if self.config['Global']['use_visualdl'] and mode == "train": vdl_writer_path = os.path.join(self.output_dir, "vdl") if not os.path.exists(vdl_writer_path): os.makedirs(vdl_writer_path) self.vdl_writer = LogWriter(logdir=vdl_writer_path) logger.info('train with paddle {} and device {}'.format( paddle.__version__, self.device)) # init members self.train_dataloader = None self.eval_dataloader = None self.gallery_dataloader = None self.query_dataloader = None self.eval_mode = self.config["Global"].get("eval_mode", "classification") self.amp = True if "AMP" in self.config else False if self.amp and self.config["AMP"] is not None: self.scale_loss = self.config["AMP"].get("scale_loss", 1.0) self.use_dynamic_loss_scaling = self.config["AMP"].get( "use_dynamic_loss_scaling", False) else: self.scale_loss = 1.0 self.use_dynamic_loss_scaling = False if self.amp: AMP_RELATED_FLAGS_SETTING = { 'FLAGS_cudnn_batchnorm_spatial_persistent': 1, 'FLAGS_max_inplace_grad_add': 8, } paddle.fluid.set_flags(AMP_RELATED_FLAGS_SETTING) self.train_loss_func = None self.eval_loss_func = None self.train_metric_func = None self.eval_metric_func = None self.use_dali = self.config['Global'].get("use_dali", False) def train(self): # build train loss and metric info if self.train_loss_func is None: loss_info = self.config["Loss"]["Train"] self.train_loss_func = build_loss(loss_info) if self.train_metric_func is None: metric_config = self.config.get("Metric") if metric_config is not None: metric_config = metric_config.get("Train") if metric_config is not None: self.train_metric_func = build_metrics(metric_config) if self.train_dataloader is None: self.train_dataloader = build_dataloader( self.config["DataLoader"], "Train", self.device, self.use_dali) step_each_epoch = len(self.train_dataloader) optimizer, lr_sch = build_optimizer(self.config["Optimizer"], self.config["Global"]["epochs"], step_each_epoch, self.model.parameters()) print_batch_step = self.config['Global']['print_batch_step'] save_interval = self.config["Global"]["save_interval"] best_metric = { "metric": 0.0, "epoch": 0, } # key: # val: metrics list word output_info = dict() time_info = { "batch_cost": AverageMeter( "batch_cost", '.5f', postfix=" s,"), "reader_cost": AverageMeter( "reader_cost", ".5f", postfix=" s,"), } # global iter counter global_step = 0 if self.config["Global"]["checkpoints"] is not None: metric_info = init_model(self.config["Global"], self.model, optimizer) if metric_info is not None: best_metric.update(metric_info) # for amp training if self.amp: scaler = paddle.amp.GradScaler( init_loss_scaling=self.scale_loss, use_dynamic_loss_scaling=self.use_dynamic_loss_scaling) tic = time.time() max_iter = len(self.train_dataloader) - 1 if platform.system( ) == "Windows" else len(self.train_dataloader) for epoch_id in range(best_metric["epoch"] + 1, self.config["Global"]["epochs"] + 1): acc = 0.0 train_dataloader = self.train_dataloader if self.use_dali else self.train_dataloader( ) for iter_id, batch in enumerate(train_dataloader): if iter_id >= max_iter: break if iter_id == 5: for key in time_info: time_info[key].reset() time_info["reader_cost"].update(time.time() - tic) if self.use_dali: batch = [ paddle.to_tensor(batch[0]['data']), paddle.to_tensor(batch[0]['label']) ] batch_size = batch[0].shape[0] batch[1] = batch[1].reshape([-1, 1]).astype("int64") global_step += 1 # image input if self.amp: with paddle.amp.auto_cast(custom_black_list={ "flatten_contiguous_range", "greater_than" }): out = self.forward(batch) loss_dict = self.train_loss_func(out, batch[1]) else: out = self.forward(batch) # calc loss if self.config["DataLoader"]["Train"]["dataset"].get( "batch_transform_ops", None): loss_dict = self.train_loss_func(out, batch[1:]) else: loss_dict = self.train_loss_func(out, batch[1]) for key in loss_dict: if not key in output_info: output_info[key] = AverageMeter(key, '7.5f') output_info[key].update(loss_dict[key].numpy()[0], batch_size) # calc metric if self.train_metric_func is not None: metric_dict = self.train_metric_func(out, batch[-1]) for key in metric_dict: if not key in output_info: output_info[key] = AverageMeter(key, '7.5f') output_info[key].update(metric_dict[key].numpy()[0], batch_size) # step opt and lr if self.amp: scaled = scaler.scale(loss_dict["loss"]) scaled.backward() scaler.minimize(optimizer, scaled) else: loss_dict["loss"].backward() optimizer.step() optimizer.clear_grad() lr_sch.step() time_info["batch_cost"].update(time.time() - tic) if iter_id % print_batch_step == 0: lr_msg = "lr: {:.5f}".format(lr_sch.get_lr()) metric_msg = ", ".join([ "{}: {:.5f}".format(key, output_info[key].avg) for key in output_info ]) time_msg = "s, ".join([ "{}: {:.5f}".format(key, time_info[key].avg) for key in time_info ]) ips_msg = "ips: {:.5f} images/sec".format( batch_size / time_info["batch_cost"].avg) eta_sec = ((self.config["Global"]["epochs"] - epoch_id + 1 ) * len(self.train_dataloader) - iter_id ) * time_info["batch_cost"].avg eta_msg = "eta: {:s}".format( str(datetime.timedelta(seconds=int(eta_sec)))) logger.info( "[Train][Epoch {}/{}][Iter: {}/{}]{}, {}, {}, {}, {}". format(epoch_id, self.config["Global"][ "epochs"], iter_id, len(self.train_dataloader), lr_msg, metric_msg, time_msg, ips_msg, eta_msg)) logger.scaler( name="lr", value=lr_sch.get_lr(), step=global_step, writer=self.vdl_writer) for key in output_info: logger.scaler( name="train_{}".format(key), value=output_info[key].avg, step=global_step, writer=self.vdl_writer) tic = time.time() if self.use_dali: self.train_dataloader.reset() metric_msg = ", ".join([ "{}: {:.5f}".format(key, output_info[key].avg) for key in output_info ]) logger.info("[Train][Epoch {}/{}][Avg]{}".format( epoch_id, self.config["Global"]["epochs"], metric_msg)) output_info.clear() # eval model and save model if possible if self.config["Global"][ "eval_during_train"] and epoch_id % self.config["Global"][ "eval_interval"] == 0: acc = self.eval(epoch_id) if acc > best_metric["metric"]: best_metric["metric"] = acc best_metric["epoch"] = epoch_id save_load.save_model( self.model, optimizer, best_metric, self.output_dir, model_name=self.config["Arch"]["name"], prefix="best_model") logger.info("[Eval][Epoch {}][best metric: {}]".format( epoch_id, best_metric["metric"])) logger.scaler( name="eval_acc", value=acc, step=epoch_id, writer=self.vdl_writer) self.model.train() # save model if epoch_id % save_interval == 0: save_load.save_model( self.model, optimizer, {"metric": acc, "epoch": epoch_id}, self.output_dir, model_name=self.config["Arch"]["name"], prefix="epoch_{}".format(epoch_id)) # save the latest model save_load.save_model( self.model, optimizer, {"metric": acc, "epoch": epoch_id}, self.output_dir, model_name=self.config["Arch"]["name"], prefix="latest") if self.vdl_writer is not None: self.vdl_writer.close() def build_avg_metrics(self, info_dict): return {key: AverageMeter(key, '7.5f') for key in info_dict} @paddle.no_grad() def eval(self, epoch_id=0): self.model.eval() if self.eval_loss_func is None: loss_config = self.config.get("Loss", None) if loss_config is not None: loss_config = loss_config.get("Eval") if loss_config is not None: self.eval_loss_func = build_loss(loss_config) if self.eval_mode == "classification": if self.eval_dataloader is None: self.eval_dataloader = build_dataloader( self.config["DataLoader"], "Eval", self.device, self.use_dali) if self.eval_metric_func is None: metric_config = self.config.get("Metric") if metric_config is not None: metric_config = metric_config.get("Eval") if metric_config is not None: self.eval_metric_func = build_metrics(metric_config) eval_result = self.eval_cls(epoch_id) elif self.eval_mode == "retrieval": if self.gallery_dataloader is None: self.gallery_dataloader = build_dataloader( self.config["DataLoader"]["Eval"], "Gallery", self.device, self.use_dali) if self.query_dataloader is None: self.query_dataloader = build_dataloader( self.config["DataLoader"]["Eval"], "Query", self.device, self.use_dali) # build metric info if self.eval_metric_func is None: metric_config = self.config.get("Metric", None) if metric_config is None: metric_config = [{"name": "Recallk", "topk": (1, 5)}] else: metric_config = metric_config["Eval"] self.eval_metric_func = build_metrics(metric_config) eval_result = self.eval_retrieval(epoch_id) else: logger.warning("Invalid eval mode: {}".format(self.eval_mode)) eval_result = None self.model.train() return eval_result def forward(self, batch): if not self.is_rec: out = self.model(batch[0]) else: out = self.model(batch[0], batch[1]) return out @paddle.no_grad() def eval_cls(self, epoch_id=0): output_info = dict() time_info = { "batch_cost": AverageMeter( "batch_cost", '.5f', postfix=" s,"), "reader_cost": AverageMeter( "reader_cost", ".5f", postfix=" s,"), } print_batch_step = self.config["Global"]["print_batch_step"] metric_key = None tic = time.time() eval_dataloader = self.eval_dataloader if self.use_dali else self.eval_dataloader( ) max_iter = len(self.eval_dataloader) - 1 if platform.system( ) == "Windows" else len(self.eval_dataloader) for iter_id, batch in enumerate(eval_dataloader): if iter_id >= max_iter: break if iter_id == 5: for key in time_info: time_info[key].reset() if self.use_dali: batch = [ paddle.to_tensor(batch[0]['data']), paddle.to_tensor(batch[0]['label']) ] time_info["reader_cost"].update(time.time() - tic) batch_size = batch[0].shape[0] batch[0] = paddle.to_tensor(batch[0]).astype("float32") batch[1] = batch[1].reshape([-1, 1]).astype("int64") # image input out = self.forward(batch) # calc loss if self.eval_loss_func is not None: loss_dict = self.eval_loss_func(out, batch[-1]) for key in loss_dict: if not key in output_info: output_info[key] = AverageMeter(key, '7.5f') output_info[key].update(loss_dict[key].numpy()[0], batch_size) # calc metric if self.eval_metric_func is not None: metric_dict = self.eval_metric_func(out, batch[-1]) if paddle.distributed.get_world_size() > 1: for key in metric_dict: paddle.distributed.all_reduce( metric_dict[key], op=paddle.distributed.ReduceOp.SUM) metric_dict[key] = metric_dict[ key] / paddle.distributed.get_world_size() for key in metric_dict: if metric_key is None: metric_key = key if not key in output_info: output_info[key] = AverageMeter(key, '7.5f') output_info[key].update(metric_dict[key].numpy()[0], batch_size) time_info["batch_cost"].update(time.time() - tic) if iter_id % print_batch_step == 0: time_msg = "s, ".join([ "{}: {:.5f}".format(key, time_info[key].avg) for key in time_info ]) ips_msg = "ips: {:.5f} images/sec".format( batch_size / time_info["batch_cost"].avg) metric_msg = ", ".join([ "{}: {:.5f}".format(key, output_info[key].val) for key in output_info ]) logger.info("[Eval][Epoch {}][Iter: {}/{}]{}, {}, {}".format( epoch_id, iter_id, len(self.eval_dataloader), metric_msg, time_msg, ips_msg)) tic = time.time() if self.use_dali: self.eval_dataloader.reset() metric_msg = ", ".join([ "{}: {:.5f}".format(key, output_info[key].avg) for key in output_info ]) logger.info("[Eval][Epoch {}][Avg]{}".format(epoch_id, metric_msg)) # do not try to save best model if self.eval_metric_func is None: return -1 # return 1st metric in the dict return output_info[metric_key].avg def eval_retrieval(self, epoch_id=0): self.model.eval() # step1. build gallery gallery_feas, gallery_img_id, gallery_unique_id = self._cal_feature( name='gallery') query_feas, query_img_id, query_query_id = self._cal_feature( name='query') # step2. do evaluation sim_block_size = self.config["Global"].get("sim_block_size", 64) sections = [sim_block_size] * (len(query_feas) // sim_block_size) if len(query_feas) % sim_block_size: sections.append(len(query_feas) % sim_block_size) fea_blocks = paddle.split(query_feas, num_or_sections=sections) if query_query_id is not None: query_id_blocks = paddle.split( query_query_id, num_or_sections=sections) image_id_blocks = paddle.split(query_img_id, num_or_sections=sections) metric_key = None if self.eval_metric_func is None: metric_dict = {metric_key: 0.} else: metric_dict = dict() for block_idx, block_fea in enumerate(fea_blocks): similarity_matrix = paddle.matmul( block_fea, gallery_feas, transpose_y=True) if query_query_id is not None: query_id_block = query_id_blocks[block_idx] query_id_mask = (query_id_block != gallery_unique_id.t()) image_id_block = image_id_blocks[block_idx] image_id_mask = (image_id_block != gallery_img_id.t()) keep_mask = paddle.logical_or(query_id_mask, image_id_mask) similarity_matrix = similarity_matrix * keep_mask.astype( "float32") else: keep_mask = None metric_tmp = self.eval_metric_func(similarity_matrix, image_id_blocks[block_idx], gallery_img_id, keep_mask) for key in metric_tmp: if key not in metric_dict: metric_dict[key] = metric_tmp[key] * block_fea.shape[ 0] / len(query_feas) else: metric_dict[key] += metric_tmp[key] * block_fea.shape[ 0] / len(query_feas) metric_info_list = [] for key in metric_dict: if metric_key is None: metric_key = key metric_info_list.append("{}: {:.5f}".format(key, metric_dict[key])) metric_msg = ", ".join(metric_info_list) logger.info("[Eval][Epoch {}][Avg]{}".format(epoch_id, metric_msg)) return metric_dict[metric_key] def _cal_feature(self, name='gallery'): all_feas = None all_image_id = None all_unique_id = None if name == 'gallery': dataloader = self.gallery_dataloader elif name == 'query': dataloader = self.query_dataloader else: raise RuntimeError("Only support gallery or query dataset") has_unique_id = False max_iter = len(dataloader) - 1 if platform.system( ) == "Windows" else len(dataloader) dataloader_tmp = dataloader if self.use_dali else dataloader() for idx, batch in enumerate( dataloader_tmp): # load is very time-consuming if idx >= max_iter: break if idx % self.config["Global"]["print_batch_step"] == 0: logger.info( f"{name} feature calculation process: [{idx}/{len(dataloader)}]" ) if self.use_dali: batch = [ paddle.to_tensor(batch[0]['data']), paddle.to_tensor(batch[0]['label']) ] batch = [paddle.to_tensor(x) for x in batch] batch[1] = batch[1].reshape([-1, 1]).astype("int64") if len(batch) == 3: has_unique_id = True batch[2] = batch[2].reshape([-1, 1]).astype("int64") out = self.model(batch[0], batch[1]) batch_feas = out["features"] # do norm if self.config["Global"].get("feature_normalize", True): feas_norm = paddle.sqrt( paddle.sum(paddle.square(batch_feas), axis=1, keepdim=True)) batch_feas = paddle.divide(batch_feas, feas_norm) if all_feas is None: all_feas = batch_feas if has_unique_id: all_unique_id = batch[2] all_image_id = batch[1] else: all_feas = paddle.concat([all_feas, batch_feas]) all_image_id = paddle.concat([all_image_id, batch[1]]) if has_unique_id: all_unique_id = paddle.concat([all_unique_id, batch[2]]) if self.use_dali: dataloader_tmp.reset() if paddle.distributed.get_world_size() > 1: feat_list = [] img_id_list = [] unique_id_list = [] paddle.distributed.all_gather(feat_list, all_feas) paddle.distributed.all_gather(img_id_list, all_image_id) all_feas = paddle.concat(feat_list, axis=0) all_image_id = paddle.concat(img_id_list, axis=0) if has_unique_id: paddle.distributed.all_gather(unique_id_list, all_unique_id) all_unique_id = paddle.concat(unique_id_list, axis=0) logger.info("Build {} done, all feat shape: {}, begin to eval..". format(name, all_feas.shape)) return all_feas, all_image_id, all_unique_id @paddle.no_grad() def infer(self, ): total_trainer = paddle.distributed.get_world_size() local_rank = paddle.distributed.get_rank() image_list = get_image_list(self.config["Infer"]["infer_imgs"]) # data split image_list = image_list[local_rank::total_trainer] preprocess_func = create_operators(self.config["Infer"]["transforms"]) postprocess_func = build_postprocess(self.config["Infer"][ "PostProcess"]) batch_size = self.config["Infer"]["batch_size"] self.model.eval() batch_data = [] image_file_list = [] for idx, image_file in enumerate(image_list): with open(image_file, 'rb') as f: x = f.read() for process in preprocess_func: x = process(x) batch_data.append(x) image_file_list.append(image_file) if len(batch_data) >= batch_size or idx == len(image_list) - 1: batch_tensor = paddle.to_tensor(batch_data) out = self.model(batch_tensor) if isinstance(out, list): out = out[0] result = postprocess_func(out, image_file_list) print(result) batch_data.clear() image_file_list.clear()