
216 C. Yang, M. Sun, J. Xia, J. Li, K. Liu, Q. Huang, and Z. Gui
starting and ending time with other process numbers. The last line with
Finish shows the test has been nished successfully.
Through processing the test le output in Figure12.8, the execution time
of a three-hour and 2.3 * 3.5 degree model forecasting by the EC2 cloud
service using two instances and different process numbers can be calcu-
lated and analyzed (Figure12.9a). By combining different test output les,
more complex analysis can be performed (Figure12.9b).
12.6 SUMMARY
Geoscience applications can be data, computing, concurrent, and spa-
tiotemporal intensive (Yang et