This paper presents large-scale eigenvalue analysis of structures on parall
el computer using component mode synthesis (CMS). The algorithm of the CMS
used in this paper was previously developed by the authors especially for l
arge-scale eigenvalue analysis on parallel environment. It was implemented
on a parallel computer Hitachi SR2201 and the performance of the analysis s
ystem was examined. Taking full advantage of the independence of the tasks
in the CMS, ideal speed up was achieved by increasing the number of CPUs. T
he computation time for the analysis of 8 million DOFs model with simple co
nfiguration was about 116 minutes using 64 CPUs, whereas the computation ti
me for the analysis of I million DOFs model with general configuration was
about 92 minutes using 241 CPUs.