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Optimizing Local Memory Allocation and Assignment Through a Decoupled Approach

Boubacar Diouf 1 Özcan Özturk 2 Albert Cohen 1 
1 ALCHEMY - Architectures, Languages and Compilers to Harness the End of Moore Years
LRI - Laboratoire de Recherche en Informatique, UP11 - Université Paris-Sud - Paris 11, Inria Saclay - Ile de France, CNRS - Centre National de la Recherche Scientifique : UMR8623
Abstract : Software-controlled local memories (LMs) are widely used to provide fast, scalable, power efficient and predictable access to critical data. While many studies addressed LM management, keeping hot data in the LM continues to cause major headache. This paper revisits LM management of arrays in light of recent progresses in register allocation, supporting multiple live-range splitting schemes through a generic integer linear program. These schemes differ in the grain of decision points. The model can also be extended to address fragmentation, assigning live ranges to precise offsets. We show that the links between LM management and register allocation have been underexploited, leaving much fundamental questions open and effective applications to be explored.
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Submitted on : Sunday, November 27, 2011 - 8:27:51 PM
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Boubacar Diouf, Özcan Özturk, Albert Cohen. Optimizing Local Memory Allocation and Assignment Through a Decoupled Approach. The 23rd International Workshop on Languages and Compilers for Parallel Computing, Oct 2009, Newark, Delaware, United States. ⟨hal-00645302⟩

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