在设备进行循环推理，开始一段时间执行正常。 但是运行一段时间后，rknn_output_get 获取输出失败。 返回值为 RKNN_ERR_DEVICE_UNAVAILABLE (-3).
具体错误log如下：
E RKNNAPI: __pthread_recv_msg, recv(MsgHeader) fail, -9(ERROR_PIPE) < 108!
E RKNNAPI: rknn_outputs_get, p_ctx->queue_output.size() = 0!
rknn get outputs failed, ret = -3
从开始运行，到出问题，推理进程内存使用情况：
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 111972K writeable/private: 39372K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K
mapped: 112864K writeable/private: 40264K shared: 0K