Among the early areas of my interest was the performance of BLAS kernels and their usage in single processor and parallel solvers for large dense linear systems. I have also looked into the effects of using Strassen's matrix multiplication algorithm in the blocked algorithms for these problems. This work has been summarized in the following publications:

+ Przemyslaw Stpiczynski, Marcin Paprzycki (2005) Numerical Software for Solving Dense Linear Algebra Problems on High Performance Computers. Proceedings of the 4th International Conference APLIMAT 2005, Slovak University of Technology, Bratislava, 207-218

+ Marcin Paprzycki, Cliff Cyphers (1996) Using Strassen's Matrix Multiplication in High Performance Solution of Linear Systems. Journal of Computers in Mathematics Applications, Vol. 31, No. 4/5, 55-61

+ Marcin Paprzycki (1995) Parallel Gaussian Elimination Algorithms on a Cray Y-MP. Informatica, Vol. 19, No. 2, 235-240

+ Marcin Paprzycki, Cliff Cyphers (1994) Optimizing Performance of Basic Linear Algebraic Subroutines on DEC Computers. In: Proceedings of the 10th Annual CAM, University of Central Oklahoma, Edmond, OK, 162-172

+ Marcin Paprzycki (1992) Comparison of Gaussian Elimination Algorithms on a Cray Y-MP. Linear Algebra and Its Applications, 172, 57-69

+ Cliff Cyphers, Marcin Paprzycki (1992) Parallel Matrix Multiplication-Can We Learn Anything New? CHPC Newsletter, Vol.7, No.4, 55-59

+ Cliff Cyphers, Marcin Paprzycki (1991) Multiplying Matrices on the Cray-Practical Considerations. CHPC Newsletter, Vol. 6, No. 6, 77-82

+ Cliff Cyphers, Marcin Paprzycki (1991) Gaussian Elimination on Cray Y-MP. CHPC Newsletter, Vol. 6, No. 4, 43-47