message: Disbale PopopsSparseSoftmaxXentWithLogitsOp as it can cause everything to be copied to tile 0
  Summary: T10175
  Test Plan: all tests pass
  Reviewers: #tensorflow, jakeh
diff: @@ -171,9 +171,10 @@ class PopopsSparseSoftmaxXentWithLogitsOp : public XlaOpKernel, IpuOpKernel {
  TF_DISALLOW_COPY_AND_ASSIGN(PopopsSparseSoftmaxXentWithLogitsOp);
  };
  -REGISTER_XLA_OP(
  - Name("SparseSoftmaxCrossEntropyWithLogits").Device(DEVICE_IPU_XLA_JIT),
  - PopopsSparseSoftmaxXentWithLogitsOp);
  +// TODO(T10195)
  +// REGISTER_XLA_OP(
  +// Name("SparseSoftmaxCrossEntropyWithLogits").Device(DEVICE_IPU_XLA_JIT),
  +// PopopsSparseSoftmaxXentWithLogitsOp);
  } // namespace
  } // namespace tensorflow
  