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- W2085757544 abstract "Distributed shared memory (DSM) systems provide an illusion of shared memory on distributed memory systems such as workstation networks and some parallel computers such as the Cray T3D and Convex SPP-1. This illusion is provided either by enhancements to hardware, software, or a combination thereof. On these systems, users can write programs using a shared memory style of programming instead of message passing which is tedious and error prone. Our experience with one such system, TreadMarks, has shown that a large class of applications does not perform well on these systems. TreadMarks is a software distributed shared memory system designed by Rice University researchers to run on networks of workstations and massively parallel computers. Due to the distributed nature of the memory system, shared memory synchronization primitives such as locks and barriers often cause significant amounts of communication.We have provided a set of powerful primitives that will alleviate the problems with locks and barriers on such systems. We have designed two sets of primitives, the first set maintains coherence and is easy to use by a programmer, the second set does not maintain coherence and is best used by a compiler. These primitives require that the underlying DSM be enhanced. We have implemented some of our primitives on the TreadMarks DSM system and obtained reasonable performance improvements on application kernels from molecular dynamics and numerical analysis. Furthermore, we have identified key compiler optimizations that use the non-coherent primitives to reduce synchronization overhead and improve the performance of DSM systems." @default.
- W2085757544 created "2016-06-24" @default.
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- W2085757544 date "1994-11-14" @default.
- W2085757544 modified "2023-09-23" @default.
- W2085757544 title "Improving the performance of DSM systems via compiler involvement" @default.
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- W2085757544 doi "https://doi.org/10.5555/602770.602894" @default.
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