ADDRESS TO THE OPENING CEREMONY OF THE 8th YOUNG ASTRONAUTS INTERNATIONAL CONFERENCE

I’d like to take this opportunity,, on behalf of China National Space Administration and the host organization, the Chinese Society of Astronautics, to extend our best wishes to the opening of the Conference and warmly welcome all delegates here both from home and abroad. The Young Astronauts International is an international organization which devotes itself to the space popular science education among young people.

基于BWDSP1042的复数矩阵向量乘的优化与实现

采用两种方法对复数矩阵向量乘进行优化,提高其在BWDSP1042上的运行效率。一是按列分块与减少二级循环内循环次数相结合的方法(矩阵列非4的倍数);二是模八寻址与减少二级循环内循环次数相结合的方法(矩阵列为4的倍数)。实验结果表明,采用第一种方法可缩短复数矩阵向量乘的运行周期2.8倍以上,第二种方法可缩短其运行周期3.1倍以上。