Abstract:
PURPOSE: A protocol header compression method for simultaneously supporting a network based portability protocol for dynamically supporting a node-based mobility protocol and 6LoWPAN network is provided to support the mobility support protocol of 6LoWPAN by efficiently compressing a binding message. CONSTITUTION: A gateway(110) decodes 6LoWPAN packet going out from 6 LoWPAN(300) to an internet. The gateway encodes the packet from internet into 6LoWPAN. An MPC(Mobile PAN Coordinator) has two network interfaces. The interfaces connect internal and external networks of a mobile PAN network.
Abstract:
PURPOSE: A method and apparatus for multi-hop time synchronization for wireless sensor networks are provided to flexibly change a network configuration. CONSTITUTION: A gateway(110) receives a request message. The gateway creates a response message including a reference time. The gateway transmits the created response message to an intermediate node. The gateway creates a response follow up message including a process time from the reference time to the response message receiving time. The gateway outputs the created response follow up message to an intermediate node.
Abstract:
PURPOSE: A system, a method, and storing medium storing the method capable of detecting a material race in an OpenMP program are provided to exactly determine whether access events are parallel. CONSTITUTION: A preprocessor(20) generates a transformed target code. An on-the-fly analyzer(30) classifies access events about a plurality of concurrent threads. The on-the-fly analyzer detects a previous access event and access event having a parallel relation as a race. The on-the-fly analyzer generates a race detecting result.
Abstract:
병렬 프로그램에서의 공유 변수에 대한 접근을 3차원 원추 상에 시각화하기 위한 방법, 장치, 및 저장 매체가 개시된다. 시각화 방법은 프로그램에 대한 경합 탐지 결과를 수신하는 단계, 경합 탐지 결과를 분석하여 프로그램의 내포 깊이를 획득하고, 3차원 원추를 시각화한 뒤 내포 깊이에 상응하도록 3차원 원추의 높이를 등분하는 원추 시각화 단계, 프로그램의 실행 중 생성되는 복수 개의 병행 스레드 중 동일한 내포 수준의 스레드를 원추의 동일한 높이에 위치한 원주 상에 시각화하는 스레드 시각화 단계 및 경합 탐지 결과를 분석하여 스레드들 중 공유 변수에 대한 접근 사건들이 발생한 스레드들을 읽기 및 쓰기 접근 사건의 발생 유무 및 발생 선후에 따라 분류하고, 분류된 스레드들을 서로 구별되도록 시각화하는 접근 사건 시각화 단계를 포함한다. OpenMP 병렬 프로그램, 경합 검증, 3차원 확장적 시각화, 병행성 관계
Abstract:
PURPOSE: A method and device for visualizing an access of an openMP program at an expanded type 3d circular cone, and storing medium storing the method are provided to shorten a development time of a program by clearly graphing a competition sensing result of a parallel program. CONSTITUTION: A user interface receives a competition detection result about a program. A cone visualization module(910) analyzes the competition detection result to obtain connotation depth of the program an visualize a 3D cone. The cone visualization module equally divides the height of a 3D cone in order to correspond to the connotation depth. A thread visualization module(920) visualizes the same thread of the level among parallel threads which is generated during execution of the program on a circumference located on same height of the circumference.