def test_resetnet50_build(): X = me.tensor() Y = me.tensor() X.set_dtype(dtype.float32) Y.set_dtype(dtype.float32) network = resnet50() model = Model(network=network, loss_fn=loss_func, optimizer=optimizer)
def test_amp_resnet50_loss(): inputs = Tensor(np.ones([2, 3, 224, 224]).astype(np.float32)) label = Tensor(np.zeros([2, 10]).astype(np.float32)) net = resnet50() loss = nn.SoftmaxCrossEntropyWithLogits(reduction='mean') optimizer = nn.Momentum(net.trainable_params(), learning_rate=0.1, momentum=0.9) train_network = amp.build_train_network(net, optimizer, loss, level="O2") train_network(inputs, label)
def resnet50_train(args_opt): epoch_size = args_opt.epoch_size batch_size = 32 class_num = 10 loss_scale_num = 1024 local_data_path = '/cache/data' # set graph mode and parallel mode context.set_context(mode=context.GRAPH_MODE, device_target="Ascend", save_graphs=False) context.set_context(enable_task_sink=True, device_id=device_id) context.set_context(enable_loop_sink=True) context.set_context(enable_mem_reuse=True) if device_num > 1: context.set_auto_parallel_context(device_num=device_num, parallel_mode=ParallelMode.DATA_PARALLEL, mirror_mean=True) local_data_path = os.path.join(local_data_path, str(device_id)) # data download print('Download data.') mox.file.copy_parallel(src_url=args_opt.data_url, dst_url=local_data_path) # create dataset print('Create train and evaluate dataset.') train_dataset = create_dataset(dataset_path=local_data_path, do_train=True, repeat_num=epoch_size, batch_size=batch_size) eval_dataset = create_dataset(dataset_path=local_data_path, do_train=False, repeat_num=1, batch_size=batch_size) train_step_size = train_dataset.get_dataset_size() print('Create dataset success.') # create model net = resnet50(class_num = class_num) loss = SoftmaxCrossEntropyWithLogits(sparse=True) lr = Tensor(get_lr(global_step=0, total_epochs=epoch_size, steps_per_epoch=train_step_size)) opt = Momentum(net.trainable_params(), lr, momentum=0.9, weight_decay=1e-4, loss_scale=loss_scale_num) loss_scale = FixedLossScaleManager(loss_scale_num, False) model = Model(net, loss_fn=loss, optimizer=opt, loss_scale_manager=loss_scale, metrics={'acc'}) # define performance callback to show ips and loss callback to show loss for every epoch performance_cb = PerformanceCallback(batch_size) loss_cb = LossMonitor() cb = [performance_cb, loss_cb] print(f'Start run training, total epoch: {epoch_size}.') model.train(epoch_size, train_dataset, callbacks=cb) if device_num == 1 or device_id == 0: print(f'Start run evaluation.') output = model.eval(eval_dataset) print(f'Evaluation result: {output}.')
save_graphs=False) context.set_context(enable_task_sink=True, device_id=device_id) context.set_context(enable_loop_sink=True) context.set_context(enable_mem_reuse=True) if __name__ == '__main__': if not args_opt.do_eval and args_opt.run_distribute: context.set_auto_parallel_context( device_num=args_opt.device_num, parallel_mode=ParallelMode.DATA_PARALLEL, mirror_mean=True) auto_parallel_context().set_all_reduce_fusion_split_indices([140]) init() epoch_size = config.epoch_size net = resnet50(class_num=config.class_num) loss = SoftmaxCrossEntropyWithLogits(sparse=True) if args_opt.do_train: dataset = create_dataset(dataset_path=args_opt.dataset_path, do_train=True, repeat_num=epoch_size, batch_size=config.batch_size) step_size = dataset.get_dataset_size() loss_scale = FixedLossScaleManager(config.loss_scale, drop_overflow_update=False) lr = Tensor( get_lr(global_step=0, lr_init=config.lr_init, lr_end=config.lr_end,
def train_process(q, device_id, epoch_size, device_num, enable_hccl): os.system("mkdir " + str(device_id)) os.chdir(str(device_id)) context.set_context(mode=context.GRAPH_MODE, device_target="Ascend", save_graphs=False) context.set_context(device_id=device_id) os.environ['MINDSPORE_HCCL_CONFIG_PATH'] = MINDSPORE_HCCL_CONFIG_PATH os.environ['RANK_ID'] = str(device_id) os.environ['RANK_SIZE'] = str(device_num) if enable_hccl: context.set_auto_parallel_context( device_num=device_num, parallel_mode=ParallelMode.DATA_PARALLEL, mirror_mean=True, parameter_broadcast=True) auto_parallel_context().set_all_reduce_fusion_split_indices([107, 160]) init() # network net = resnet50(class_num=config.class_num) # evaluation network dist_eval_network = ClassifyCorrectCell(net) if not config.use_label_smooth: config.label_smooth_factor = 0.0 # loss loss = nn.SoftmaxCrossEntropyWithLogits( sparse=True, reduction="mean", smooth_factor=config.label_smooth_factor, num_classes=config.class_num) # train dataset dataset = create_dataset(dataset_path=dataset_path, do_train=True, repeat_num=epoch_size, batch_size=config.batch_size) step_size = dataset.get_dataset_size() eval_interval = config.eval_interval dataset.__loop_size__ = step_size * eval_interval # evalutation dataset eval_dataset = create_dataset(dataset_path=eval_path, do_train=False, repeat_num=epoch_size, batch_size=config.eval_batch_size) # loss scale loss_scale = FixedLossScaleManager(config.loss_scale, drop_overflow_update=False) # learning rate lr = Tensor( get_learning_rate(lr_init=config.lr_init, lr_end=0.0, lr_max=config.lr_max, warmup_epochs=config.warmup_epochs, total_epochs=config.epoch_size, steps_per_epoch=step_size, lr_decay_mode=config.lr_decay_mode)) # optimizer decayed_params = list( filter( lambda x: 'beta' not in x.name and 'gamma' not in x.name and 'bias' not in x.name, net.trainable_params())) no_decayed_params = [ param for param in net.trainable_params() if param not in decayed_params ] group_params = [{ 'params': decayed_params, 'weight_decay': config.weight_decay }, { 'params': no_decayed_params, 'weight_decay': 0.0 }, { 'order_params': net.trainable_params() }] if config.use_lars: momentum = nn.Momentum(group_params, lr, config.momentum, loss_scale=config.loss_scale, use_nesterov=config.use_nesterov) opt = nn.LARS(momentum, epsilon=config.lars_epsilon, coefficient=config.lars_coefficient, lars_filter=lambda x: 'beta' not in x.name and 'gamma' not in x.name and 'bias' not in x.name) else: opt = nn.Momentum(group_params, lr, config.momentum, loss_scale=config.loss_scale, use_nesterov=config.use_nesterov) # model model = Model(net, loss_fn=loss, optimizer=opt, loss_scale_manager=loss_scale, amp_level="O2", keep_batchnorm_fp32=False, metrics={ 'acc': DistAccuracy(batch_size=config.eval_batch_size, device_num=device_num) }, eval_network=dist_eval_network) # model init print("init_start", device_id) model.init(dataset, eval_dataset) print("init_stop", device_id) # callbacks loss_cb = LossGet(1, step_size) # train and eval print("run_start", device_id) acc = 0.0 time_cost = 0.0 for epoch_idx in range(0, int(epoch_size / eval_interval)): model.train(1, dataset, callbacks=loss_cb) eval_start = time.time() output = model.eval(eval_dataset) eval_cost = (time.time() - eval_start) * 1000 acc = float(output["acc"]) time_cost = loss_cb.get_per_step_time() loss = loss_cb.get_loss() print( "the {} epoch's resnet result:\n " "device{}, training loss {}, acc {}, " "training per step cost {:.2f} ms, eval cost {:.2f} ms, total_cost {:.2f} ms" .format(epoch_idx, device_id, loss, acc, time_cost, eval_cost, time_cost * step_size + eval_cost)) q.put({'acc': acc, 'cost': time_cost})
def test_resnet_construct(x): # not right model to import network = resnet50() return network.construct(x)