return syscall.WSASendto(o.fd.Sysfd, &o.buf, 1, &o.qty, 0, o.sa, &o.o, nil)
		})
		return n, err
	}

	ntotal := 0
	for len(buf) > 0 {
		b := buf
		if len(b) > maxRW {
			b = b[:maxRW]
		}
		o := &fd.wop
		o.InitBuf(b)
		o.sa = sa
		n, err := execIO(o, func(o *operation) error {
			return syscall.WSASendto(o.fd.Sysfd, &o.buf, 1, &o.qty, 0, o.sa, &o.o, nil)
		})

  // iterate on graph->op_nodes().
  std::vector<Node*> xla_compiled_kernels;
  absl::c_copy_if(graph->op_nodes(), std::back_inserter(xla_compiled_kernels),
                  [](const Node* n) {
                    if (n->IsSend() || n->IsRecv() || n->IsControlFlow()) {
                      return false;
                    }

                    // Only compile nodes that are marked for compilation by the

                                         "XlaScatter",
                                         "XlaSelectAndScatter",
                                         "XlaSelfAdjointEig",
                                         "XlaSend",
                                         "XlaSharding",
                                         "XlaSort",
                                         "XlaSpmdFullToShardShape",