{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,3,3]],"date-time":"2025-03-03T05:35:49Z","timestamp":1740980149505,"version":"3.38.0"},"reference-count":30,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2007,5,1]],"date-time":"2007-05-01T00:00:00Z","timestamp":1177977600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The International Journal of High Performance Computing Applications"],"published-print":{"date-parts":[[2007,5]]},"abstract":"<jats:p> The grid paradigm for distributed computation provides an interesting framework for the simulation of dense stellar systems, which remains a great challenge for astrophysicists. In this work we apply a distributed simulation model to the astrophysical N-body problem: the High Level Architecture (HLA), using distributed federations on top of grid infrastructures for the communication between simulation and visualization components. To achieve this goal, we use a grid HLA Management system (G-HLAM) for HLA-based simulations running on the grid. We compare this setup with a direct parallelization of the N-body code using MPI on the grid. Our aim is to provide scientists with an interactive environment where, in contrast to traditional MPI-based parallel processing, seamless simulation process migration and rollbacks can be invoked on the fly to improve the overall computational performance. <\/jats:p><jats:p> We found that MPI and HLA are complementary rather than competing technologies, as they can be used simultaneously to improve the performance of complex simulations on different fronts. On one hand, if the communication to computation ratio is small enough, the MPI parallelization proves to be a relatively easy and efficient method for taking advantage of grid technology. On the other hand, HLA provides advanced mechanisms to synchronize simulation and visualization components located on different grid nodes and can be used to add steering mechanisms to improve interaction. Finally, we found that HLA allows migration of running simulations to be easily managed, reducing overall communication times between simulation and the user, effectively improving the overall system performance. <\/jats:p>","DOI":"10.1177\/1094342007074874","type":"journal-article","created":{"date-parts":[[2007,4,26]],"date-time":"2007-04-26T15:03:05Z","timestamp":1177599785000},"page":"210-221","source":"Crossref","is-referenced-by-count":5,"title":["Regular Paper: Interactive N-Body Simulations On the Grid: HLA Versus MPI"],"prefix":"10.1177","volume":"21","author":[{"given":"Katarzyna","family":"Rycerz","sequence":"first","affiliation":[{"name":"INSTITUTE OF COMPUTER SCIENCE, AGH, AL. MICKIEWICZA 30, 30-059\r                        KRAK\u00d3W, POLAND,"}]},{"given":"Alfredo","family":"Tirado-Ramos","sequence":"additional","affiliation":[{"name":"FACULTY OF SCIENCE, SECTION COMPUTATIONAL SCIENCE, UNIVERSITY OF\r                        AMSTERDAM, KRUISLAAN 403, 1098 SJ AMSTERDAM, THE NETHERLANDS"}]},{"given":"Alessia","family":"Gualandris","sequence":"additional","affiliation":[{"name":"FACULTY OF SCIENCE, SECTION COMPUTATIONAL SCIENCE, UNIVERSITY OF\r                        AMSTERDAM, KRUISLAAN 403, 1098 SJ AMSTERDAM, THE NETHERLANDS, ASTRONOMICAL\r                        INSTITUTE \u201cANTON PANNEKOEK\u201d, AMSTERDAM,THE NETHERLANDS"}]},{"given":"Simon F.","family":"Portegies Zwart","sequence":"additional","affiliation":[{"name":"FACULTY OF SCIENCE, SECTION COMPUTATIONAL SCIENCE, UNIVERSITY OF\r                        AMSTERDAM, KRUISLAAN 403, 1098 SJ AMSTERDAM, THE NETHERLANDS, ASTRONOMICAL\r                        INSTITUTE \u201cANTON PANNEKOEK\u201d, AMSTERDAM,THE NETHERLANDS"}]},{"given":"Marian","family":"Bubak","sequence":"additional","affiliation":[{"name":"INSTITUTE OF COMPUTER SCIENCE, AGH, AL. MICKIEWICZA 30, 30-059\r                        KRAK\u00d3W, POLAND, FACULTY OF SCIENCE, SECTION COMPUTATIONAL\r                        SCIENCE, UNIVERSITY OF AMSTERDAM, KRUISLAAN 403, 1098 SJ AMSTERDAM, THE NETHERLANDS"}]},{"given":"Peter M. A.","family":"Sloot","sequence":"additional","affiliation":[{"name":"FACULTY OF SCIENCE, SECTION COMPUTATIONAL SCIENCE, UNIVERSITY OF\r                        AMSTERDAM, KRUISLAAN 403, 1098 SJ AMSTERDAM, THE NETHERLANDS"}]}],"member":"179","published-online":{"date-parts":[[2007,5,1]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1086\/316455"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1023\/A:1011491422534"},{"volume-title":"Proceedings of the SGI Users' Conference 2000","author":"Belleman, R.G.","key":"atypb3"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-739X(02)00055-9"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1016\/j.future.2004.09.023"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1016\/j.future.2006.02.001"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1016\/j.future.2004.09.019"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1086\/158511"},{"volume-title":"Introducing WEDS: a WSRF-based environment for distributed simulation","year":"2004","author":"Coveney, P.","key":"atypb9"},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-8711.1998.01734.x"},{"volume-title":"Performance analysis of direct N-body algorithms for astrophysical simulations on distributed systems, accepted for publication in Parallel Computing","author":"Gualandris, A.","key":"atypb11"},{"volume-title":"The art of computational science","year":"2003","author":"Hut, P.","key":"atypb12"},{"volume-title":"IEEE Standard for Modeling and Simulation (M&S) High Level Architecture (HLA)","year":"2000","author":"Ieee","key":"atypb13"},{"key":"atypb14","doi-asserted-by":"publisher","DOI":"10.1145\/506117.506123"},{"key":"atypb15","doi-asserted-by":"publisher","DOI":"10.1086\/309350"},{"key":"atypb16","first-page":"141","volume":"44","author":"Makino, J.","year":"1992","journal-title":"Publ. of the Astron. 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Danelutt\n                , eds, Proceedings of the CoreGRID Workshop on Integrated Research in\n                    Grid Computing, November 28\u201430, \n                    Pisa\n                , pp. 165\u2014174, Technical Report TR-05-22."},{"volume-title":"A grid service for management of multiple HLA federate processes, submitted to PPAM conference","year":"2005","author":"Rycerz, K.","key":"atypb23"},{"key":"atypb24","doi-asserted-by":"publisher","DOI":"10.1177\/0037549705051970"},{"key":"atypb25","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-739X(99)00106-5"},{"volume-title":"Seventeenth Symposium on Reliable Distributed Systems","author":"Silva, L.M.","key":"atypb26"},{"key":"atypb27","doi-asserted-by":"publisher","DOI":"10.1016\/S0377-0427(99)00166-1"},{"key":"atypb28","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-739X(00)00077-7"},{"key":"atypb29","doi-asserted-by":"publisher","DOI":"10.1007\/11508380_25"},{"volume-title":"Proceedings of the Seventh IEEE International Symposium on Distributed Simulation and Real Time Applications (DS-RT 2003)","author":"Zajac, K.","key":"atypb30"}],"container-title":["The International Journal of High Performance Computing Applications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1094342007074874","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1094342007074874","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,2]],"date-time":"2025-03-02T10:19:16Z","timestamp":1740910756000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/1094342007074874"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,5]]},"references-count":30,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2007,5]]}},"alternative-id":["10.1177\/1094342007074874"],"URL":"https:\/\/doi.org\/10.1177\/1094342007074874","relation":{},"ISSN":["1094-3420","1741-2846"],"issn-type":[{"type":"print","value":"1094-3420"},{"type":"electronic","value":"1741-2846"}],"subject":[],"published":{"date-parts":[[2007,5]]}}}