Merge pull request #697 from PaddlePaddle/ckpt

fix ckpt load

deepspeech/models/u2.py

@@ -599,26 +599,26 @@ class U2BaseModel(nn.Module):
                 best_index = i
         return hyps[best_index][0]
 
-    @jit.export
+    #@jit.export
     def subsampling_rate(self) -> int:
         """ Export interface for c++ call, return subsampling_rate of the
             model
         """
         return self.encoder.embed.subsampling_rate
 
-    @jit.export
+    #@jit.export
     def right_context(self) -> int:
         """ Export interface for c++ call, return right_context of the model
         """
         return self.encoder.embed.right_context
 
-    @jit.export
+    #@jit.export
     def sos_symbol(self) -> int:
         """ Export interface for c++ call, return sos symbol id of the model
         """
         return self.sos
 
-    @jit.export
+    #@jit.export
     def eos_symbol(self) -> int:
         """ Export interface for c++ call, return eos symbol id of the model
         """
@@ -654,12 +654,14 @@ class U2BaseModel(nn.Module):
             xs, offset, required_cache_size, subsampling_cache,
             elayers_output_cache, conformer_cnn_cache)
 
-    @jit.export
+    # @jit.export([
+    #         paddle.static.InputSpec(shape=[1, None, feat_dim],dtype='float32'),  # audio feat, [B,T,D]
+    #     ])
     def ctc_activation(self, xs: paddle.Tensor) -> paddle.Tensor:
         """ Export interface for c++ call, apply linear transform and log
             softmax before ctc
         Args:
-            xs (paddle.Tensor): encoder output
+            xs (paddle.Tensor): encoder output, (B, T, D)
         Returns:
             paddle.Tensor: activation before ctc
         """
@@ -894,7 +896,7 @@ class U2Model(U2BaseModel):
         model = cls.from_config(config)
 
         if checkpoint_path:
-            infos = checkpoint.load_parameters(
+            infos = checkpoint.Checkpoint().load_parameters(
                 model, checkpoint_path=checkpoint_path)
             logger.info(f"checkpoint info: {infos}")
         layer_tools.summary(model)

deepspeech/utils/checkpoint.py

@@ -17,6 +17,7 @@ import os
 import re
 from pathlib import Path
 from typing import Union
+from typing import Text
 
 import paddle
 from paddle import distributed as dist
@@ -30,7 +31,7 @@ logger = Log(__name__).getlog()
 __all__ = ["Checkpoint"]
 
 
-class Checkpoint(object):
+class Checkpoint():
     def __init__(self, kbest_n: int=5, latest_n: int=1):
         self.best_records: Mapping[Path, float] = {}
         self.latest_records = []
@@ -40,11 +41,21 @@ class Checkpoint(object):
 
     def add_checkpoint(self,
                        checkpoint_dir,
-                       tag_or_iteration,
-                       model,
-                       optimizer,
-                       infos,
+                       tag_or_iteration: Union[int, Text],
+                       model: paddle.nn.Layer,
+                       optimizer: Optimizer=None,
+                       infos: dict=None,
                        metric_type="val_loss"):
+        """Save checkpoint in best_n and latest_n.
+
+        Args:
+            checkpoint_dir (str): the directory where checkpoint is saved.
+            tag_or_iteration (int or str): the latest iteration(step or epoch) number or tag.
+            model (Layer):  model to be checkpointed. 
+            optimizer (Optimizer, optional): optimizer to be checkpointed.
+            infos (dict or None)):  any info you want to save.
+            metric_type (str, optional): metric type. Defaults to "val_loss".
+        """
         if (metric_type not in infos.keys()):
             self._save_parameters(checkpoint_dir, tag_or_iteration, model,
                                   optimizer, infos)
@@ -62,6 +73,62 @@ class Checkpoint(object):
         if isinstance(tag_or_iteration, int):
             self._save_checkpoint_record(checkpoint_dir, tag_or_iteration)
             
+    def load_parameters(self,
+                         model,
+                         optimizer=None,
+                         checkpoint_dir=None,
+                         checkpoint_path=None,
+                         record_file="checkpoint_latest"):
+        """Load a last model checkpoint from disk. 
+        Args:
+            model (Layer): model to load parameters.
+            optimizer (Optimizer, optional): optimizer to load states if needed.
+                Defaults to None.
+            checkpoint_dir (str, optional): the directory where checkpoint is saved.
+            checkpoint_path (str, optional): if specified, load the checkpoint
+                stored in the checkpoint_path(prefix) and the argument 'checkpoint_dir' will 
+                be ignored. Defaults to None. 
+            record_file "checkpoint_latest" or "checkpoint_best"
+        Returns:
+            configs (dict): epoch or step, lr and other meta info should be saved.
+        """
+        configs = {}
+
+        if checkpoint_path is not None:
+            pass
+        elif checkpoint_dir is not None and record_file is not None:
+            # load checkpint from record file
+            checkpoint_record = os.path.join(checkpoint_dir, record_file)
+            iteration = self._load_checkpoint_idx(checkpoint_record)
+            if iteration == -1:
+                return configs
+            checkpoint_path = os.path.join(checkpoint_dir,
+                                           "{}".format(iteration))
+        else:
+            raise ValueError(
+                "At least one of 'checkpoint_path' or 'checkpoint_dir' should be specified!"
+            )
+
+        rank = dist.get_rank()
+
+        params_path = checkpoint_path + ".pdparams"
+        model_dict = paddle.load(params_path)
+        model.set_state_dict(model_dict)
+        logger.info("Rank {}: loaded model from {}".format(rank, params_path))
+
+        optimizer_path = checkpoint_path + ".pdopt"
+        if optimizer and os.path.isfile(optimizer_path):
+            optimizer_dict = paddle.load(optimizer_path)
+            optimizer.set_state_dict(optimizer_dict)
+            logger.info("Rank {}: loaded optimizer state from {}".format(
+                rank, optimizer_path))
+
+        info_path = re.sub('.pdparams$', '.json', params_path)
+        if os.path.exists(info_path):
+            with open(info_path, 'r') as fin:
+                configs = json.load(fin)
+        return configs
+
     def load_latest_parameters(self,
                                model,
                                optimizer=None,
@@ -192,61 +259,6 @@ class Checkpoint(object):
             for i in self.latest_records:
                 handle.write("model_checkpoint_path:{}\n".format(i))
 
-    def _load_parameters(self,
-                         model,
-                         optimizer=None,
-                         checkpoint_dir=None,
-                         checkpoint_path=None,
-                         checkpoint_file=None):
-        """Load a last model checkpoint from disk. 
-        Args:
-            model (Layer): model to load parameters.
-            optimizer (Optimizer, optional): optimizer to load states if needed.
-                Defaults to None.
-            checkpoint_dir (str, optional): the directory where checkpoint is saved.
-            checkpoint_path (str, optional): if specified, load the checkpoint
-                stored in the checkpoint_path(prefix) and the argument 'checkpoint_dir' will 
-                be ignored. Defaults to None. 
-            checkpoint_file "checkpoint_latest" or "checkpoint_best"
-        Returns:
-            configs (dict): epoch or step, lr and other meta info should be saved.
-        """
-        configs = {}
-
-        if checkpoint_path is not None:
-            tag = os.path.basename(checkpoint_path).split(":")[-1]
-        elif checkpoint_dir is not None and checkpoint_file is not None:
-            checkpoint_record = os.path.join(checkpoint_dir, checkpoint_file)
-            iteration = self._load_checkpoint_idx(checkpoint_record)
-            if iteration == -1:
-                return configs
-            checkpoint_path = os.path.join(checkpoint_dir,
-                                           "{}".format(iteration))
-        else:
-            raise ValueError(
-                "At least one of 'checkpoint_dir' and 'checkpoint_file' and 'checkpoint_path' should be specified!"
-            )
-
-        rank = dist.get_rank()
-
-        params_path = checkpoint_path + ".pdparams"
-        model_dict = paddle.load(params_path)
-        model.set_state_dict(model_dict)
-        logger.info("Rank {}: loaded model from {}".format(rank, params_path))
-
-        optimizer_path = checkpoint_path + ".pdopt"
-        if optimizer and os.path.isfile(optimizer_path):
-            optimizer_dict = paddle.load(optimizer_path)
-            optimizer.set_state_dict(optimizer_dict)
-            logger.info("Rank {}: loaded optimizer state from {}".format(
-                rank, optimizer_path))
-
-        info_path = re.sub('.pdparams$', '.json', params_path)
-        if os.path.exists(info_path):
-            with open(info_path, 'r') as fin:
-                configs = json.load(fin)
-        return configs
-
     @mp_tools.rank_zero_only
     def _save_parameters(self,
                          checkpoint_dir: str,

examples/aishell/s1/run.sh

@@ -40,5 +40,5 @@ fi
 
 if [ ${stage} -le 5 ] && [ ${stop_stage} -ge 5 ]; then
     # export ckpt avg_n
-    CUDA_VISIBLE_DEVICES= ./local/export.sh ${conf_path} exp/${ckpt}/checkpoints/${avg_ckpt} exp/${ckpt}/checkpoints/${avg_ckpt}.jit
+    CUDA_VISIBLE_DEVICES=0 ./local/export.sh ${conf_path} exp/${ckpt}/checkpoints/${avg_ckpt} exp/${ckpt}/checkpoints/${avg_ckpt}.jit
 fi