gem5는 SoC(System on Chip) 시뮬레이션에 널리 쓰이는 도구이며, 여기에 GUI를 추가한 gem5-GUI는 아키텍처를 GUI로 설계할 수 있는 장점이 있다. 하지만 각 기능 블록의 포트를 잇는 연결을 직선으로 그려서 배선 수가 많아지면 배선이 다양한 각도로 교차하고 얽혀 연결 관계를 파악하기 어려운 문제가 있었다. 본 논문에서는 이를 해결하기 위해 직각 배선 라우팅을 적용하여 개선하였다. 25pt 간격의 도트 격자로 모듈을 정규화하고, 모듈의 포트 간 A* 최단 경로 탐색 알고리즘을 적용하였다. 이동은 격자의 네 방향으로 제한하여 맨해튼 거리를 휴리스틱으로 사용하며, 꺾임과 겹침에 페널티를 부여하여 배선의 얽힘을 줄이고 정돈된 배선을 생성할 수 있도록 하였다.
KSP Keywords
System-On-Chip(SoC)
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