By Topic

Guarded execution and branch prediction in dynamic ILP processors

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Pnevmatikatos, D.N. ; Dept. of Comput. Sci., Wisconsin Univ., Madison, WI, USA ; Sohi, G.S.

Evaluates the effects of guarded (or conditional, or predicated) execution on the performance of an instruction level parallel processor employing dynamic branch prediction. First, the authors assess the utility of guarded execution, both qualitatively and quantitatively, using a variety of application programs. The assessment shows that guarded execution significantly increases the opportunities, for both compiler and dynamic hardware, to extract and exploit parallelism. However, existing methods of specifying guarded execution have several drawbacks that limit its use. Second, the authors study the interaction of guarded execution and dynamic branch prediction and show that the use of guarded execution significantly increases the number of instructions between mispredicted branches. Third, they propose a new method of specifying guarded execution. The proposed method uses special GUARD instructions, which can be used to incorporate guarded execution into existing instruction sets. GUARD instructions realize the full power of guarded execution, without the drawbacks of existing methods of specifying guarded execution

Published in:

Computer Architecture, 1994., Proceedings the 21st Annual International Symposium on

Date of Conference:

18-21 Apr 1994