Cpu Cpu 1 Cpu 2 Cpu
نویسندگان
چکیده
Coherent-cache shared-memory architectures often give disappointing performance which can be alleviated by manual tuning. We describe a new trace analysis tool, clarissa, which helps diagnose problems and pinpoint their causes. Unusually, clarissa works by analysing potential contention, instead of measuring predicted contention by simulating a speciic memory system design. This is important because, after tuning, the software will be executed on diierent inputs and diierent conngurations. The goal is to produce a program with robustly good performance. This paper explains the principle behind cautious trace analysis, describes our implementation, and presents our experience of using the tool.
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