His research interests spans the areas of parallel algorithm design, data mining, applications of bio-informatics, information retrieval, data mining, parallel processing, scientific computing and optimization, sparse matrix computations. His research includes results in the development of software libraries for serial and parallel graph partitioning (METIS and ParMETIS), hypergraph partitioning (hMETIS), and for parallel Cholesky factorization (PSPASES). He has coauthored several journal articles and conference papers on these topics and a book "Introduction to Parallel Computing" (Publ. Benjamin Cummings/Addison Wesley, 1994). He is a member of ACM, IEEE, and SIAM.