message: Disable tuning for now. Re-enable when measurement-based estimator is ready.
diff: @@ -1623,20 +1623,13 @@ Status LayoutOptimizer::Optimize(Cluster* cluster, const GrapplerItem& item,
  }
  TuningConfig config;
  - config.no_gemm = false;
  - status = Tune(item, graph_properties, config, output);
  - // This is based on an empirical observation that if the introduced Transpose
  - // nodes is more than 30, not using GEMM implementation would result in better
  - // performance.
  - if (status.ok() && GetNumTranspose(*output) > 30) {
  config.no_gemm = true;
  + // TODO(yaozhang): Enable tuning with various TuningConfig choices wtih
  + // the measurement-based estimator.
  status = Tune(item, graph_properties, config, output);
  - }
  -
  if (!status.ok()) {
  *output = item.graph;
  }
  -
  return status;
  }
  