Don't shut down TPU chips if compilation fails in TF2.

PiperOrigin-RevId: 276630160
Change-Id: I02c477e7fcd7a936821affa953a9801deaf7a6ec

tensorflow/core/ops/tpu_configuration_ops.cc

@@ -205,6 +205,7 @@ REGISTER_OP("ConfigureDistributedTPU")
     .Attr("tpu_embedding_config: string = ''")
     .Attr("is_global_init: bool = false")
     .Attr("enable_whole_mesh_compilations: bool = false")
+    .Attr("compilation_failure_closes_chips: bool = true")
     .SetIsStateful()
     .SetShapeFn(shape_inference::UnknownShape);
 

tensorflow/python/tpu/tpu.py

@@ -92,7 +92,9 @@ def _tpu_system_device_name(job):
 
 
 @tf_export(v1=["tpu.initialize_system"])
-def initialize_system(embedding_config=None, job=None):
+def initialize_system(embedding_config=None,
+                      job=None,
+                      compilation_failure_closes_chips=True):
   """Initializes a distributed TPU system for use with TensorFlow.
 
   Args:
@@ -103,14 +105,18 @@ def initialize_system(embedding_config=None, job=None):
       contains the TPU devices that will be initialized. If job=None it is
       assumed there is only one job in the TensorFlow flock, and an error will
       be returned if this assumption does not hold.
+    compilation_failure_closes_chips: Set the configuration whether
+      we want to close TPU chips when there is a compilation failure.
   Returns:
     A serialized `TopologyProto` that describes the TPU system. Note:
       the topology must be evaluated using `Session.run` before it can be used.
   """
   config_string = ("" if embedding_config is None else
                    embedding_config.SerializeToString())
   with ops.device(_tpu_system_device_name(job)):
-    return tpu_ops.configure_distributed_tpu(embedding_config=config_string)
+    return tpu_ops.configure_distributed_tpu(
+        embedding_config=config_string,
+        compilation_failure_closes_chips=compilation_failure_closes_chips)
 
 
 def initialize_system_for_tpu_embedding(embedding_config, job=None):

tensorflow/python/tpu/tpu_strategy_util.py

@@ -84,7 +84,11 @@ def initialize_tpu_system(cluster_resolver=None):
 
     @function.defun
     def _tpu_init_fn():
-      return tpu.initialize_system(job=job)
+      # In TF1, we usually close chips when compilation fails to clear the data
+      # in infeed. In TF2, we don't need to do this because infeed is no longer
+      # used, so user can recover from TPU compilation failures more smoothly.
+      return tpu.initialize_system(
+          job=job, compilation_failure_closes_chips=False)
 
     # The TPU_SYSTEM device must match the device used in tpu.initialize_system
     # exactly, otherwise you can get errors if there are multiple TPU_SYSTEM

tensorflow/tools/api/golden/v1/tensorflow.raw_ops.pbtxt

@@ -730,7 +730,7 @@ tf_module {
   }
   member_method {
     name: "ConfigureDistributedTPU"
-    argspec: "args=[\'embedding_config\', \'tpu_embedding_config\', \'is_global_init\', \'enable_whole_mesh_compilations\', \'name\'], varargs=None, keywords=None, defaults=[\'\', \'\', \'False\', \'False\', \'None\'], "
+    argspec: "args=[\'embedding_config\', \'tpu_embedding_config\', \'is_global_init\', \'enable_whole_mesh_compilations\', \'compilation_failure_closes_chips\', \'name\'], varargs=None, keywords=None, defaults=[\'\', \'\', \'False\', \'False\', \'True\', \'None\'], "
   }
   member_method {
     name: "ConfigureTPUEmbedding"

tensorflow/tools/api/golden/v1/tensorflow.tpu.pbtxt

@@ -26,7 +26,7 @@ tf_module {
   }
   member_method {
     name: "initialize_system"
-    argspec: "args=[\'embedding_config\', \'job\'], varargs=None, keywords=None, defaults=[\'None\', \'None\'], "
+    argspec: "args=[\'embedding_config\', \'job\', \'compilation_failure_closes_chips\'], varargs=None, keywords=None, defaults=[\'None\', \'None\', \'True\'], "
   }
   member_method {
     name: "outside_compilation"

tensorflow/tools/api/golden/v2/tensorflow.raw_ops.pbtxt

@@ -730,7 +730,7 @@ tf_module {
   }
   member_method {
     name: "ConfigureDistributedTPU"
-    argspec: "args=[\'embedding_config\', \'tpu_embedding_config\', \'is_global_init\', \'enable_whole_mesh_compilations\', \'name\'], varargs=None, keywords=None, defaults=[\'\', \'\', \'False\', \'False\', \'None\'], "
+    argspec: "args=[\'embedding_config\', \'tpu_embedding_config\', \'is_global_init\', \'enable_whole_mesh_compilations\', \'compilation_failure_closes_chips\', \'name\'], varargs=None, keywords=None, defaults=[\'\', \'\', \'False\', \'False\', \'True\', \'None\'], "
   }
   member_method {
     name: "ConfigureTPUEmbedding"