Abstract
At the advent of a wished (or forced) convergence between High Performance Computing HPC platforms, stand-alone accelerators and virtualized resources from Cloud Computing CC systems, this article unveils the job prediction component of the Evalix project. This framework aims at an improved efficiency of the underlying Resource and Job Management System RJMS within heterogeneous HPC facilities by the automatic evaluation and characterization of the submitted workload. The objective is not only to better adapt the scheduled jobs to the available resource capabilities, but also to reduce the energy costs. For that purpose, we collected the resource consumption of all the jobs executed on a production cluster for a period of three months. Based on the analysis then on the classification of the jobs, we computed a resource consumption model. The objective is to train a set of predictors based on the aforementioned model, that will give the estimated CPU, memory and IO used by the jobs. The analysis of the resource consumption highlighted that different classes of jobs have different kinds of resource needs and the classification of the jobs enabled to characterize several application patterns of the users. We also discovered that several users whose resource usage on the cluster is considered as too low, are responsible for a loss of CPU time on the order of five years over the considered three month period. The predictors, trained from a supervised learning algorithm, were able to correctly classify a large set of data. We evaluated them with three performance indicators that gave an information retrieval rate of 71% to 89% and a probability of accurate prediction between 0.7 and 0.8. The results of this work will be particularly helpful for designing an optimal partitioning of the considered heterogeneous platform, taking into consideration the real application needs and thus leading to energy savings and performance improvements. Moreover, apart from the novelty of the contribution, the accurate classification scheme offers new insights of users behavior of interest for the design of future HPC platforms.
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Notes
- 1.
Later on, another monitoring tool named Colmet [11] will be used.
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Acknowledgments
The experiments presented in this paper were carried out using the HPC facility of the University of Luxembourg. Many thanks are also due to all those who participated in collecting and distributing the logs available through the PWA and used in Table 1.
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Emeras, J., Varrette, S., Guzek, M., Bouvry, P. (2017). Evalix: Classification and Prediction of Job Resource Consumption on HPC Platforms. In: Desai, N., Cirne, W. (eds) Job Scheduling Strategies for Parallel Processing. JSSPP JSSPP 2015 2016. Lecture Notes in Computer Science(), vol 10353. Springer, Cham. https://doi.org/10.1007/978-3-319-61756-5_6
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