Multiprogramming at Each Processor

• In a multi-processor system, CPU utilization is not all that important
  • As long as some computation is being carried out, it is fine.
• Application efficiency are more important
  • Turn around time
  • application-related performance metrics.
• Assigning all threads to different processors may not always yield high performance.

Multiprogramming

• A multi-threaded application may require all its threads be assigned to different processors for good performance.
  • If there are n threads and m processors (m > n), m-n processors may not have any thing to execute.
• If threads are dependent on each other and require heavy synchronization, assigning all to same processor may be beneficial
• Process allocation can be Static or dynamic.