Parallel transpose of matrix multiplication based on the tiling algorithms
Minwoo Kim, Yong Jang, Won Woo Ro · 2011
This paper introduces a useful technique which can be used in a parallel matrix multiplication with the tiling method. Firstly, we exploit the effect of the matrix transpose for the tiling algorithm compared to the standard tiling algorithm. The experimental results show that the transpose tiling algorithm is more efficient than the standard tiling algorithm in most usable tile sizes. Moreover, we propose a parallel transpose tiling algorithm which is further developed from transpose tiling algorithm. Parallel transpose tiling algorithm reduces the overhead of transpose operation by distributing the matrix over multiple threads. As a result, the parallel transpose tiling algorithm is up to 4.76% and 6.61% faster than the original transpose tiling algorithm on Core2 9400 and Phenom 9550 processors, respectively.