1. The Google Cluster Google

2. The Google Floor Plan

3. A Google Rack of PCs

4. One Google PC

5. Google Factoids In 2000 Google served 1000 queries per second Google crawls the entire web every month December 2000 (three years ago) Google used 6000 processors and 12,000 disks totaling 1 petabyte of data Searches have been growing about 90% a year at Google

6. More Google Factoids Software is the weak link – the biggest source of failures in Google is software About 20 machines a day are rebooted Rebooting actually done manually 2-3% of the PCs must be replaced each year Disk and dram failures account for 95% of these

7. How is Pipelining Implemented? Study over section 8.3; know the 5 clock cycle implementation for MIPS shown on page A-27 and 28

8. Events on Pipe Stages Study over figure A-19