Yu, Yijun and D'Hollander, Erik H.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1006/jvlc.2000.0191|
|Google Scholar:||Look up in Google Scholar|
A 3D iteration space visualizer (ISV) is presented to analyze the parallelism in loops and to find loop transformations which enhance the parallelism. Using automatic program instrumentation, the iteration space dependency graph (ISDG) is constructed, which shows the exact data dependencies of arbitrarily nested loops. Various graphical operations such as rotation, zooming, clipping, coloring and filtering, permit a detailed examination of the dependence relations. Furthermore, an animated dataflow execution shows the maximal parallelism and the parallel loops are indicated automatically by an embedded data dependence analysis. In addition, the user may discover and indicate additional parallelism for which a suitable unimodular loop transformation is calculated and verified. The ISV has been applied to parallelize algorithmic kernel programs, a computational fluid dynamics (CFD) simulation code, the detection of statement-level parallelism and loop variable privatization. The applications show that the visualizer is a versatile and easy to use tool for the high-performance application programmer.
|Item Type:||Journal Article|
|Extra Information:||This paper was judged to be best paper at the 1st VMPDP Workshop at the International Conference on Visual Languages, 2001.|
|Keywords:||program visualization; dependence analysis; loop transformations; iteration space dependence graph; program instrumentation|
|Academic Unit/Department:||Mathematics, Computing and Technology > Computing & Communications
Mathematics, Computing and Technology
|Interdisciplinary Research Centre:||Centre for Research in Computing (CRC)|
|Depositing User:||Yijun Yu|
|Date Deposited:||20 Feb 2007|
|Last Modified:||14 Jan 2016 16:27|
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