message: Change the block size used in the triangular system solve step of the Cholesky decomposition algorithm to be the same block size as the Cholesky blocks.  Dramatically speeds up compilation time with negligible affect on runtime.
diff: @@ -214,7 +214,7 @@ xla::StatusOr<xla::XlaOp> Cholesky(xla::XlaBuilder* builder, xla::XlaOp a,
  /*lower=*/true,
  /*transpose_a=*/true,
  /*conjugate_a=*/false,
  - /*block_size=*/8));
  + /*block_size=*/block_size));
  TF_ASSIGN_OR_RETURN(
  l, UpdateSliceInMinorDims(builder, l, update, {i + k, i}));
  }
  