thread parallelism

1. Presented By : Iram
Rafiq(2202CUKmr07)
Sadaf
Mushtaq(2202CUKm09)
Students of M.Tech CSE 1st Semester.
Central University of Kashmir.
Thread Level Parallelism

2. CONTENTS:
 Thread level parallelism
 Multithreading
 Execution model
 SMT

3. Thread Level Parallelism
 Multiple threads of execution
 Exploit ILP in each thread
 Exploit concurrent execution across threads

4. Multithreading
 Multithreading allows multiple concurrent tasks can be
performed within a single process.
 Reason for incorporating threads into an application is to
improve its performance.
 Multithreading also leads to minimization and more
efficient use of computing resources.

5. Execution model:Multithreading
 Fine-grain multithreading
- Switch threads after each cycle
- Interleave instruction execution
 Coarse-grain multithreading
- Only switch on long stall
- Simplifies hardware,but does not
hide short stalls
- If one thread stalls ,others are executed.

6. Simultaneous Multithreading
 Variant on multithreading.
 The ability of a single physical processor to simultaneously
dispatch instructions from more than one hardware thread
context.
 It minimizes the architectural effect on a traditional
superscalar design.
 It has a minimum overall performance effect on a single
thread executing alone.
 It achieves widespread throughput profits while going for
walks a couple of threads.

7. References:
 https://www.ibm.com/docs/en/aix/7.2?topic=conce
pts-simultaneous-multithreading
 https://www.computerhope.com/jargon/t/tlp.htm
 https://www.cs.umd.edu/~meesh/411/CA-
online/chapter/thread-level-parallelism-smt-and-
cmp/inde

8. Thank You