Add verbose to dde.model.train and dde.model.compile (#1879)

deepxde/model.py

@@ -65,6 +65,7 @@ def compile(
         decay=None,
         loss_weights=None,
         external_trainable_variables=None,
+        verbose=1,
     ):
         """Configures the model for training.
 
@@ -114,8 +115,9 @@ def compile(
                 physics systems that need to be recovered. If the backend is
                 tensorflow.compat.v1, `external_trainable_variables` is ignored, and all
                 trainable ``dde.Variable`` objects are automatically collected.
+            verbose (Integer): Controls the verbosity of the compile process.
         """
-        if config.rank == 0:
+        if verbose > 0 and config.rank == 0:
             print("Compiling model...")
         self.opt_name = optimizer
         loss_fn = losses_module.get(loss)
@@ -585,6 +587,7 @@ def train(
         model_restore_path=None,
         model_save_path=None,
         epochs=None,
+        verbose=1,
     ):
         """Trains the model.
 
@@ -610,6 +613,7 @@ def train(
             model_save_path (String): Prefix of filenames created for the checkpoint.
             epochs (Integer): Deprecated alias to `iterations`. This will be removed in
                 a future version.
+            verbose (Integer): Controls the verbosity of the train process.
         """
         if iterations is None and epochs is not None:
             print(
@@ -635,36 +639,36 @@ def train(
         if model_restore_path is not None:
             self.restore(model_restore_path, verbose=1)
 
-        if config.rank == 0:
+        if verbose > 0 and config.rank == 0:
             print("Training model...\n")
         self.stop_training = False
         self.train_state.set_data_train(*self.data.train_next_batch(self.batch_size))
         self.train_state.set_data_test(*self.data.test())
-        self._test()
+        self._test(verbose=verbose)
         self.callbacks.on_train_begin()
         if optimizers.is_external_optimizer(self.opt_name):
             if backend_name == "tensorflow.compat.v1":
-                self._train_tensorflow_compat_v1_scipy(display_every)
+                self._train_tensorflow_compat_v1_scipy(display_every, verbose=verbose)
             elif backend_name == "tensorflow":
-                self._train_tensorflow_tfp()
+                self._train_tensorflow_tfp(verbose=verbose)
             elif backend_name == "pytorch":
-                self._train_pytorch_lbfgs()
+                self._train_pytorch_lbfgs(verbose=verbose)
             elif backend_name == "paddle":
-                self._train_paddle_lbfgs()
+                self._train_paddle_lbfgs(verbose=verbose)
         else:
             if iterations is None:
                 raise ValueError("No iterations for {}.".format(self.opt_name))
-            self._train_sgd(iterations, display_every)
+            self._train_sgd(iterations, display_every, verbose=verbose)
         self.callbacks.on_train_end()
 
-        if config.rank == 0:
+        if verbose > 0 and config.rank == 0:
             print("")
             display.training_display.summary(self.train_state)
         if model_save_path is not None:
             self.save(model_save_path, verbose=1)
         return self.losshistory, self.train_state
 
-    def _train_sgd(self, iterations, display_every):
+    def _train_sgd(self, iterations, display_every, verbose=1):
         for i in range(iterations):
             self.callbacks.on_epoch_begin()
             self.callbacks.on_batch_begin()
@@ -681,15 +685,15 @@ def _train_sgd(self, iterations, display_every):
             self.train_state.epoch += 1
             self.train_state.step += 1
             if self.train_state.step % display_every == 0 or i + 1 == iterations:
-                self._test()
+                self._test(verbose=verbose)
 
             self.callbacks.on_batch_end()
             self.callbacks.on_epoch_end()
 
             if self.stop_training:
                 break
 
-    def _train_tensorflow_compat_v1_scipy(self, display_every):
+    def _train_tensorflow_compat_v1_scipy(self, display_every, verbose=1):
         def loss_callback(loss_train, loss_test, *args):
             self.train_state.epoch += 1
             self.train_state.step += 1
@@ -703,7 +707,8 @@ def loss_callback(loss_train, loss_test, *args):
                     self.train_state.loss_test,
                     None,
                 )
-                display.training_display(self.train_state)
+                if verbose > 0:
+                    display.training_display(self.train_state)
             for cb in self.callbacks.callbacks:
                 if type(cb).__name__ == "VariableValue":
                     cb.epochs_since_last += 1
@@ -736,9 +741,9 @@ def loss_callback(loss_train, loss_test, *args):
             fetches=fetches,
             loss_callback=loss_callback,
         )
-        self._test()
+        self._test(verbose=verbose)
 
-    def _train_tensorflow_tfp(self):
+    def _train_tensorflow_tfp(self, verbose=1):
         # There is only one optimization step. If using multiple steps with/without
         # previous_optimizer_results, L-BFGS failed to reach a small error. The reason
         # could be that tfp.optimizer.lbfgs_minimize will start from scratch for each
@@ -756,12 +761,12 @@ def _train_tensorflow_tfp(self):
             n_iter += results.num_iterations.numpy()
             self.train_state.epoch += results.num_iterations.numpy()
             self.train_state.step += results.num_iterations.numpy()
-            self._test()
+            self._test(verbose=verbose)
 
             if results.converged or results.failed:
                 break
 
-    def _train_pytorch_lbfgs(self):
+    def _train_pytorch_lbfgs(self, verbose=1):
         prev_n_iter = 0
         while prev_n_iter < optimizers.LBFGS_options["maxiter"]:
             self.callbacks.on_epoch_begin()
@@ -784,15 +789,15 @@ def _train_pytorch_lbfgs(self):
             self.train_state.epoch += n_iter - prev_n_iter
             self.train_state.step += n_iter - prev_n_iter
             prev_n_iter = n_iter
-            self._test()
+            self._test(verbose=verbose)
 
             self.callbacks.on_batch_end()
             self.callbacks.on_epoch_end()
 
             if self.stop_training:
                 break
 
-    def _train_paddle_lbfgs(self):
+    def _train_paddle_lbfgs(self, verbose=1):
         prev_n_iter = 0
 
         while prev_n_iter < optimizers.LBFGS_options["maxiter"]:
@@ -816,15 +821,15 @@ def _train_paddle_lbfgs(self):
             self.train_state.epoch += n_iter - prev_n_iter
             self.train_state.step += n_iter - prev_n_iter
             prev_n_iter = n_iter
-            self._test()
+            self._test(verbose=verbose)
 
             self.callbacks.on_batch_end()
             self.callbacks.on_epoch_end()
 
             if self.stop_training:
                 break
 
-    def _test(self):
+    def _test(self, verbose=1):
         # TODO Now only print the training loss in rank 0. The correct way is to print the average training loss of all ranks.
         (
             self.train_state.y_pred_train,
@@ -867,7 +872,7 @@ def _test(self):
             or np.isnan(self.train_state.loss_test).any()
         ):
             self.stop_training = True
-        if config.rank == 0:
+        if verbose > 0 and config.rank == 0:
             display.training_display(self.train_state)
 
     def predict(self, x, operator=None, callbacks=None):

deepxde/utils/internal.py

@@ -21,7 +21,8 @@ def wrapper(*args, **kwargs):
         ts = timeit.default_timer()
         result = f(*args, **kwargs)
         te = timeit.default_timer()
-        if config.rank == 0:
+        verbose = kwargs.get('verbose', 1)
+        if verbose > 0 and config.rank == 0:
             print("%r took %f s\n" % (f.__name__, te - ts))
             sys.stdout.flush()
         return result