make enable_program_desc_tracing_ thread_local (#39776)

paddle/fluid/imperative/tracer.cc

@@ -32,6 +32,8 @@ DECLARE_string(tracer_mkldnn_ops_off);
 namespace paddle {
 namespace imperative {
 
+thread_local bool Tracer::enable_program_desc_tracing_ = false;
+
 thread_local bool Tracer::has_grad_ = true;
 
 thread_local AmpLevel Tracer::amp_level_ = AmpLevel::O0;

paddle/fluid/imperative/tracer.h

@@ -160,10 +160,11 @@ class Tracer {
  private:
   std::unique_ptr<BasicEngine> basic_engine_;
   std::unique_ptr<jit::ProgramDescTracer> program_desc_tracer_;
-  bool enable_program_desc_tracing_{false};
   std::unique_ptr<UniqueNameGenerator> generator_;
   platform::Place expected_place_;
   GarbageCollectorMap gcs_;
+
+  static thread_local bool enable_program_desc_tracing_;
   static thread_local bool has_grad_;
   static thread_local AmpLevel amp_level_;
   static thread_local phi::DataType amp_dtype_;