A performance model for fine-grain accesses in UPC

UPC’s implicit communication and fine-grain programming style make application performance modeling a challenging task. The correspondence between remote references and communication events depends on the internals of the compiler and runtime system. This correspondence is often hidden from application developers. Aggressive optimizations allowed by the relaxed memory consistency model further blur this correspondence by transforming code structure. A modeling approach based on UPC platform benchmarking and code analysis is proposed. This apbstracts a UPC platform according to its potential to apply a few common optimizations, then divides remote references in the application code into groups, based on a dependence analysis, that are amenable to each optimization. Each group is associated with a cost, obtained via benchmarking each potential optimization. The aggregated cost of these groups is the predicted cost of the application. Three simple UPC applications modeled using this a...

• Type: Conference
• Year: 2006
• Where: IPPS
• Authors: Zhang Zhang, S. R. Seidel
• Keywords: Distributed And Parallel Computing, IPPS 2006, Remote References, UPC Platform, UPC’s Implicit Communication