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MPI-based parallelization of the resulting middle-size numerical problem is implemented and tested on the blade cluster and separate multi-core computers at the Weierstrass Institute in Berlin. It was found that an application of 25\u201330 parallel processes on all considered platforms guaranteed a nearly optimal performance of the algorithm with a speedup of around 20\u201325 and an efficiency of 0.7\u20130.8. It was also shown that simultaneous usage of several in-house available multi-core computers allows for a further increase of the speedup without a significant loss of efficiency. Finally, the importance of the considered problem and efficient numerical simulations of this problem were illustrated via a few examples occurring in real world applications. <\/jats:p>","DOI":"10.1177\/1094342016677086","type":"journal-article","created":{"date-parts":[[2017,12,31]],"date-time":"2017-12-31T15:33:09Z","timestamp":1514734389000},"page":"512-522","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":19,"title":["Modeling and simulations of broad-area edge-emitting semiconductor devices"],"prefix":"10.1177","volume":"32","author":[{"given":"Mindaugas","family":"Radziunas","sequence":"first","affiliation":[{"name":"Weierstrass Institute, Germany"}]}],"member":"179","published-online":{"date-parts":[[2016,12,23]]},"reference":[{"key":"bibr1-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1007\/0-387-27256-9_3"},{"key":"bibr2-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1109\/3.903067"},{"key":"bibr3-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1007\/s00340-009-3591-z"},{"key":"bibr4-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1016\/j.pquantelec.2008.10.002"},{"key":"bibr5-1094342016677086","doi-asserted-by":"crossref","first-page":"845","DOI":"10.1016\/S0960-0779(98)00036-8","volume":"10","author":"Burkhard T","year":"1999","journal-title":"Chaos, Solitons, & Fractals"},{"key":"bibr6-1094342016677086","doi-asserted-by":"publisher","DOI":"10.3846\/1392-6292.2010.15.409-430"},{"key":"bibr7-1094342016677086","doi-asserted-by":"publisher","DOI":"10.3846\/1392-6292.2008.13.327-348"},{"key":"bibr8-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1109\/68.726743"},{"key":"bibr9-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1364\/OE.17.019599"},{"key":"bibr10-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1109\/JSTQE.2008.2011286"},{"key":"bibr11-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1364\/OL.31.000802"},{"key":"bibr12-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1109\/JSTQE.2013.2246772"},{"key":"bibr13-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1109\/50.541229"},{"key":"bibr14-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1364\/JOSAB.30.001606"},{"key":"bibr15-1094342016677086","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-32152-3_25"},{"key":"bibr16-1094342016677086","unstructured":"Radziunas M (2016) BALaser: A software tool for simulation of dynamics in broad area semiconductor lasers. 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