diff --git a/examples/opensora_pku/opensora/models/causalvideovae/model/__init__.py b/examples/opensora_pku/opensora/models/causalvideovae/model/__init__.py
index c3fac22450..5d3351be6e 100644
--- a/examples/opensora_pku/opensora/models/causalvideovae/model/__init__.py
+++ b/examples/opensora_pku/opensora/models/causalvideovae/model/__init__.py
@@ -11,6 +11,7 @@
 # )
 from .causal_vae import CausalVAEModelWrapper
 from .causal_vae.modeling_causalvae import CausalVAEModel
+from .ema_model import EMA
 
 videobase_ae_stride = {
     "CausalVAEModel_4x8x8": [4, 8, 8],
diff --git a/examples/opensora_pku/opensora/models/causalvideovae/model/ema_model.py b/examples/opensora_pku/opensora/models/causalvideovae/model/ema_model.py
new file mode 100644
index 0000000000..6f62a6043e
--- /dev/null
+++ b/examples/opensora_pku/opensora/models/causalvideovae/model/ema_model.py
@@ -0,0 +1,38 @@
+from mindspore.ops import composite as C
+from mindspore.ops import functional as F
+
+from mindone.trainers.ema import EMA as EMA_
+
+_ema_op = C.MultitypeFuncGraph("grad_ema_op")
+
+
+@_ema_op.register("Number", "Tensor", "Tensor")
+def _ema_weights(factor, ema_weight, weight):
+    return F.assign(ema_weight, ema_weight * factor + weight * (1 - factor))
+
+
+class EMA(EMA_):
+    def ema_update(self):
+        """Update EMA parameters."""
+        self.updates += 1
+        # update trainable parameters
+        success = self.hyper_map(F.partial(_ema_op, self.ema_decay), self.ema_weight, self.net_weight)
+        self.updates = F.depend(self.updates, success)
+
+        return self.updates
+
+
+def save_ema_ckpts(net, ema, ckpt_manager, ckpt_name):
+    if ema is not None:
+        ema.swap_before_eval()
+
+    ckpt_manager.save(net, None, ckpt_name=ckpt_name, append_dict=None)
+
+    if ema is not None:
+        ema.swap_after_eval()
+        ckpt_manager.save(
+            net,
+            None,
+            ckpt_name=ckpt_name.replace(".ckpt", "_nonema.ckpt"),
+            append_dict=None,
+        )
diff --git a/examples/opensora_pku/opensora/models/causalvideovae/model/losses/net_with_loss.py b/examples/opensora_pku/opensora/models/causalvideovae/model/losses/net_with_loss.py
index ef148ebe73..c2e07bbb32 100644
--- a/examples/opensora_pku/opensora/models/causalvideovae/model/losses/net_with_loss.py
+++ b/examples/opensora_pku/opensora/models/causalvideovae/model/losses/net_with_loss.py
@@ -46,7 +46,8 @@ def __init__(
         self.perceptual_loss = perceptual_loss
 
         l1 = nn.L1Loss(reduction="none")
-        l2 = nn.L2Loss(reduction="none")
+        # l2 = nn.L2Loss(reduction="none")
+        l2 = ops.L2Loss()
         self.loss_func = l1 if loss_type == "l1" else l2
         # TODO: is self.logvar trainable?
         self.logvar = ms.Parameter(ms.Tensor([logvar_init], dtype=dtype))
diff --git a/examples/opensora_pku/opensora/train/train_causalvae.py b/examples/opensora_pku/opensora/train/train_causalvae.py
index ac45fa19f5..44e3617fce 100644
--- a/examples/opensora_pku/opensora/train/train_causalvae.py
+++ b/examples/opensora_pku/opensora/train/train_causalvae.py
@@ -18,13 +18,12 @@
 sys.path.append(".")
 mindone_lib_path = os.path.abspath("../../")
 sys.path.insert(0, mindone_lib_path)
-from opensora.models.causalvideovae.model import CausalVAEModel
+from opensora.models.causalvideovae.model import EMA, CausalVAEModel
 from opensora.models.causalvideovae.model.dataset_videobase import VideoDataset, create_dataloader
 from opensora.models.causalvideovae.model.losses.net_with_loss import DiscriminatorWithLoss, GeneratorWithLoss
 from opensora.models.causalvideovae.model.modules.updownsample import TrilinearInterpolate
 from opensora.models.causalvideovae.model.utils.model_utils import resolve_str_to_obj
 from opensora.train.commons import create_loss_scaler, parse_args
-from opensora.utils.ema import EMA
 from opensora.utils.ms_utils import init_env
 from opensora.utils.utils import get_precision
 
@@ -448,10 +447,13 @@ def main(args):
                 step_time = time.time() - start_time_s
                 if step % args.log_interval == 0:
                     loss_ae = float(loss_ae_t.asnumpy())
-                    logger.info(f"E: {epoch+1}, S: {step+1}, Loss ae: {loss_ae:.4f}, Step time: {step_time*1000:.2f}ms")
+                    logger.info(
+                        f"E: {epoch+1}, S: {step+1}, Loss ae: {loss_ae:.4f}, ae loss scaler {loss_scaler_ae.loss_scale_value},\
+                              Step time: {step_time*1000:.2f}ms"
+                    )
                     if global_step >= disc_start:
                         loss_disc = float(loss_disc_t.asnumpy())
-                        logger.info(f"Loss disc: {loss_disc:.4f}")
+                        logger.info(f"Loss disc: {loss_disc:.4f}, disc loss scaler {loss_scaler_disc.loss_scale_value}")
                         loss_log_file.write(f"{cur_global_step}\t{loss_ae:.7f}\t{loss_disc:.7f}\t{step_time:.2f}\n")
                     else:
                         loss_log_file.write(f"{cur_global_step}\t{loss_ae:.7f}\t{0.0}\t{step_time:.2f}\n")
diff --git a/examples/opensora_pku/scripts/causalvae/train_with_gan_loss.sh b/examples/opensora_pku/scripts/causalvae/train_with_gan_loss.sh
index 8e5f17f49a..b28c4bb136 100644
--- a/examples/opensora_pku/scripts/causalvae/train_with_gan_loss.sh
+++ b/examples/opensora_pku/scripts/causalvae/train_with_gan_loss.sh
@@ -1,20 +1,20 @@
 python opensora/train/train_causalvae.py \
-    --exp_name "9x256x256" \
+    --exp_name "25x256x256" \
     --batch_size 1 \
-    --precision fp32 \
+    --precision bf16 \
     --max_steps 100000 \
     --save_steps 2000 \
     --output_dir results/causalvae \
     --video_path /remote-home1/dataset/data_split_tt \
     --video_num_frames 25 \
     --resolution 256 \
-    --sample_rate 1 \
+    --sample_rate 2 \
     --dataloader_num_workers 8 \
     --load_from_checkpoint pretrained/causal_vae_488_init.ckpt \
     --start_learning_rate 1e-5 \
     --lr_scheduler constant \
     --optim adam \
-    --betas 0.5 0.9 \
+    --betas 0.9 0.999 \
     --clip_grad True \
     --weight_decay 0.0 \
     --mode 0 \
diff --git a/examples/opensora_pku/scripts/causalvae/train_with_gan_loss_multi_device.sh b/examples/opensora_pku/scripts/causalvae/train_with_gan_loss_multi_device.sh
index e23bf8f6cf..979b7922f7 100644
--- a/examples/opensora_pku/scripts/causalvae/train_with_gan_loss_multi_device.sh
+++ b/examples/opensora_pku/scripts/causalvae/train_with_gan_loss_multi_device.sh
@@ -3,25 +3,25 @@ export MS_ENABLE_NUMA=0
 export MS_MEMORY_STATISTIC=1
 export GLOG_v=2
 output_dir="results/causalvae"
-exp_name="9x256x256"
+exp_name="25x256x256"
 
 msrun --bind_core=True --worker_num=8 --local_worker_num=8 --master_port=9000 --log_dir=$output_dir/$exp_name/parallel_logs opensora/train/train_causalvae.py \
     --exp_name $exp_name \
     --batch_size 1 \
-    --precision fp32 \
+    --precision bf16 \
     --max_steps 100000 \
     --save_steps 2000 \
     --output_dir $output_dir \
     --video_path /remote-home1/dataset/data_split_tt \
     --video_num_frames 25 \
     --resolution 256 \
-    --sample_rate 1 \
+    --sample_rate 2 \
     --dataloader_num_workers 8 \
     --load_from_checkpoint pretrained/causal_vae_488_init.ckpt \
     --start_learning_rate 1e-5 \
     --lr_scheduler constant \
     --optim adam \
-    --betas 0.5 0.9 \
+    --betas 0.9 0.999 \
     --clip_grad True \
     --weight_decay 0.0 \
     --mode 0 \