Gianpaolo Prina

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We describe an environment to produce traces representing significant workloads for a shared-bus shared-memory multiprocessor used as a general-purpose multitasking machine , where each processor can include multithread facilities. By means of an exclusively software approach, the environment produces traces that include both user and kernel references,(More)
A major concern with high-performance general-purpose workstations is to speed up the execution of commands, uniprocess applications, and multiprocess applications with coarse-to medium-grain parallelism. To that end, a simple extension of a uniprocessor machine such as a shared-bus, shared-memory architecture can be employed. 1 Both kinds of machines(More)
In a multiprocessor system, process migration guarantees load balance between processors but causes passive sharing, since private data blocks of a process can become resident in multiple caches and generate useless coherence-related overhead. We propose a selective invalidation strategy to eliminate these passive shared copies. The results of trace-driven(More)
This paper describes a hybrid methodology (based on both actual and synthetic reference streams) to produce traces representing significant complete workloads. By means of a software approach, we generate traces that include both user and kernel references, starting from source traces containing only user references. We consider the aspects of kernel that(More)
Cache memory design in embedded systems can take advantage from the analysis of the software that runs on that system, which usually remains the same for its whole life. Programs can be characterized, in respect of the memory hierarchy, using locality analysis. We propose an environment which permits to analyze the locality of a program and the effects on(More)
We present an educational software package (Csim) used as a teaching tool to analyze the structure and behavior of a cache memory and to help the student in the design of cache memories for embedded systems. By means of an integrated software development environment, the user can create a program and explore its behavior (locality analysis). The student can(More)
Showing the internal behavior of a computer and the didactic path which conducts to the final design of an embedded system is often a difficult task, without adequate tools. Classical approaches may skip details of the underlaying architecture which can be fundamental to meet particular timing or consumption requirements. We propose an approach based on an(More)
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