Title :
Online Adaptive Code Generation and Tuning
Author :
Tiwari, Ananta ; Hollingsworth, Jeffrey K.
Author_Institution :
Dept. of Comput. Sci., Univ. of Maryland, College Park, MD, USA
Abstract :
In this paper, we present a runtime compilation and tuning framework for parallel programs. We extend our prior work on our auto-tuner, Active Harmony, for tunable parameters that require code generation (for example, different unroll factors). For such parameters, our auto-tuner generates and compiles new code on-the-fly. Effectively, we merge traditional feedback directed optimization and just-in-time compilation. We show that our system can leverage available parallelism in today´s HPC platforms by evaluating different code-variants on different nodes simultaneously. We evaluate our system on two parallel applications and show that our system can improve runtime execution by up to 46% compared to the original version of the program.
Keywords :
optimising compilers; parallel programming; HPC platform; active harmony; auto-tuner; code-variant; just-in-time compilation; online adaptive code generation; optimization; parallel program; parallelism; runtime compilation; tunable parameter; tuning framework; Educational institutions; Face; Libraries; Optimization; Runtime; Servers; Tuning;
Conference_Titel :
Parallel & Distributed Processing Symposium (IPDPS), 2011 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
978-1-61284-372-8
Electronic_ISBN :
1530-2075
DOI :
10.1109/IPDPS.2011.86