35 research outputs found
Deep Surrogate Models of Serverless Batch Processing Services
No full textServerless computing breaks down applications into workflows of stateless functions, where the output of each function serves as the input for the next. When these workflows are distributed across multiple processing nodes, managing the interactions between nodes is crucial to maintaining overall system performance. However, existing analytical performance models do not cope well with the dependencies involved in distributed workflows when the offloaded jobs arrive in batches. In this paper, we study the problem for two processing resources in tandem and develop a scalable surrogate modeling approach based on neural networks that can be used for serverless resource management purposes. We validate our performance model with both synthetic and real-world AI application traces, demonstrating that our surrogate model achieves a mean average percentage error of about 5%
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Hot Water Distribution System Program Documentation and Comparison to Experimental Data
No full textIn 2003, the California Energy Commission s (CEC s) Public Interest Energy Research (PIER) program funded Oak Ridge National Laboratory (ORNL) to create a computer program to analyze hot water distribution systems for single family residences, and to perform such analyses for a selection of houses. This effort and its results were documented in a report provided to CEC in March, 2004 [1]. The principal objective of effort was to compare the water and energy wasted between various possible hot water distribution systems for various different house designs. It was presumed that water being provided to a user would be considered suitably warm when it reached 105 F. Therefore, what was needed was a tool which could compute the time it takes for water reaching the draw point to reach 105 F, and the energy wasted during this wait. The computer program used to perform the analyses was a combination of a calculational core, produced by Dr. Keith A. Woodbury, Professor of Mechanical Engineering and Director, Alabama Industrial Assessment Center, University of Alabama, and a user interface based on LabVIEW, created by Dr. Roberto Lenarduzzi of ORNL. At that time, the computer program was in a relatively rough and undocumented form adequate to perform the contracted work but not in a condition where it could be readily used by those not involved in its generation. Subsequently, the CEC provided funding through Lawrence Berkeley National Laboratory (LBNL) to improve the program s documentation and user interface to facilitate use by others, and to compare the program s results to experimental data generated by Dr. Carl Hiller. This report describes the program and provides user guidance. It also summarizes the comparisons made to experimental data, along with options built into the program specifically to allow these comparisons. These options were necessitated by the fact that some of the experimental data required options and features not originally included in the program. A more detailed description of these program modifications along with detailed comparisons to the experimental data are provided in a report produced by Dr. Woodbury, which accompanies this report as Appendix H
Gesamtkunstwerk. Contemporary Art and Media Culture in Boris Groys
No full textEste artículo se propone abordar las relaciones entre cultura mediática y arte contemporáneo en la obra teórica y crítica de Boris Groys poniendo especial énfasis en la idea wagneriana de obra de arte total retomada por el autor. Para ello, a partir de una breve descripción de obra de arte, se introduce una descripción de la categoría y el uso que le da Groys para analizar la cultura del stalinismo, las formas del arte contemporáneo y sus relaciones con la cultura mediática en la actualidad.This article aims to address the relationship between media culture and contemporary art in the theoretical and critical work of Boris Groys, placing special emphasis on the Wagnerian idea of total work of art taken up by the author. For this, from a brief description of work of art, we present a description of the category and use given by Groys to analyze the culture of Stalinism, the forms of contemporary art and their relationship with media culture today.Facultad de Bellas Arte
Serverless Testing: Tool Vendors’ and Experts’ Point of View: Tool Vendors' and Experts' Points of View
No full textTesting serverless applications plays an important role in software quality assurance. The current status of testing and debugging in serverless-based applications depicted by the experts helped us highlight issues and challenges that need to be deeply investigated.Software Engineerin
