{"type":"ScholarlyArticle","title":"Minimizing Writes in Parallel External Memory Search","authors":[{"name":"Nathan R. Sturtevant","slug":"nathan-r-sturtevant","given":"Nathan R.","family":"Sturtevant","affiliation":""},{"name":"Matthew J. Rutherford","slug":"matthew-j-rutherford","given":"Matthew J.","family":"Rutherford","affiliation":""}],"abstract":"Recent research on external-memory search has shown that disks can be effectively used as secondary storage when performing large breadth-first searches. We introduce the Write-Minimizing Breadth-First Search (WMBFS) algorithm which is designed to minimizethe number of writes performed in an external-memory BFS. WMBFS is also designed to store the results of the BFS for later use.We present the results of a BFS on a single-agent version of Chinese Checkers and the Rubik's Cube edge cubes, state spaces with about 1 trillion states each. In evaluating against a comparable approach, WMBFS reduces the I/O for the Chinese Checkers domain by over an order of magnitude. In Rubik's cube, in addition to reducing I/O, the search is also 3.5 times faster. Analysis of the results suggests the machine and state-space properties necessary for WMBFS to perform well.","doi":null,"url":"https://ijcai.org/proceedings/2013/105","pdf":"https://ijcai.org/proceedings/2013/0105.pdf","markdown":"https://ijcai.org/proceedings/2013/105.md","bibtex":"https://ijcai.org/proceedings/2013/bibtex/105","volume":{"slug":"2013","title":"Proceedings of the Twenty-Third International Joint Conference on Artificial Intelligence","short_title":"IJCAI 2013","url":"https://ijcai.org/proceedings/2013/","year":2013,"location":"Beijing, China","dates":"3–9 August 2013","editors":"Francesca Rossi","isbn":"978-1-57735-633-2","publisher":"AAAI Press / International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":null,"track":"","number":105,"pages":{"first":666,"last":672},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}