Trace-Based Visualization as a Tool to Understand Applications' I/O Performance in Multi-core Machines
| Autor: | Pablo Grunmann, Carla Osthoff, Matthias Diener, Philippe O. A. Navaux, Nicolas Maillard, Yves Denneulin, Pedro Leite da Silva Dias, Jairo Panetta, Francieli Zanon Boito, Rodrigo Kassick, Claudio Schepke |
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| Rok vydání: | 2011 |
| Předmět: |
Multi-core processor
010504 meteorology & atmospheric sciences Scale (ratio) Computer science business.industry 020206 networking & telecommunications 02 engineering and technology Atmospheric model 01 natural sciences Visualization Data visualization Computer engineering Scalability 0202 electrical engineering electronic engineering information engineering business Simulation 0105 earth and related environmental sciences TRACE (psycholinguistics) |
| Zdroj: | 2011 Second Workshop on Architecture and Multi-Core Applications (wamca 2011). |
| DOI: | 10.1109/wamca.2011.12 |
| Popis: | This paper presents the use of trace-based performance visualization of a large scale atmospheric model, the Ocean-Land-Atmosphere Model (OLAM). The trace was obtained with the libRastro library, and the visualization was done with Paj´e. The use of visualization aimed to analyze OLAM's performance and to identify its bottlenecks. Especially, we are interested in the model's I/O operations, since it was proved to be the main issue for the model's performance. We show that most of the time spent in the output routine is spent in the close operation. With this information, we delayed this operation until the next output phase, obtaining improved I/O performance. |
| Databáze: | OpenAIRE |
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