{"title":"Performance testing of distributed block-oriented storage over IP networks","authors":"P. Martinez-Julia, A. Gómez-Skarmeta","doi":"10.1109/LATW.2010.5550375","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550375","url":null,"abstract":"The present paper shows a performance test we have done to study the viability of a solution to build storage clouds using NBD (Network Block Device) and RAID technologies. This solution can be used both by providers and consumers of cloud storage services to exploit their distributed features, building and consuming high-capacity and fault-tolerant distributed storage systems.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126708308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Torri, Guilherme Fachini, Leonardo Steinfeld, Vesmar Camara, L. Carro, É. Cota
{"title":"An evaluation of free/open source static analysis tools applied to embedded software","authors":"L. Torri, Guilherme Fachini, Leonardo Steinfeld, Vesmar Camara, L. Carro, É. Cota","doi":"10.1109/LATW.2010.5550368","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550368","url":null,"abstract":"Static analysis can be a valuable strategy to improve the quality of embedded software at a lower development cost. In this paper, we have surveyed ten different free/open source tools that perform static software analysis and evaluated their use in embedded software. Experimental results show that the studied tools present widely different results, and most of them are not ready to be applied to embedded systems. Furthermore, we discuss possible directions to improve the use of static analysis tools in the embedded domain.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116020763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A method for improving the radiation tolerance of PIN photodiodes by optimization of n− layer thickness and light wavelength","authors":"A. Cédola, M. Cappelletti, E. Y. Blancá","doi":"10.1109/LATW.2010.5550341","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550341","url":null,"abstract":"An iterative method applied to enhance the proton radiation tolerance and the responsivity of PIN photodiodes was developed. The method allows to calculate optimal values of the intrinsic layer thickness and the incident light wavelength, in function of the light intensity and the maximum proton fluence to be supported by the device. These results minimize the effects of radiation on the total reverse current of the photodiode and maximize its response to light. The implementation of the method is useful in the design of devices that will not suffer variations from its operation point due to radiation.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129311758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Grosso, H. WilsonJ.Pérez, D. Ravotto, E. Sánchez, M. Reorda, J. Velasco-Medina
{"title":"Functional test generation for DMA controllers","authors":"M. Grosso, H. WilsonJ.Pérez, D. Ravotto, E. Sánchez, M. Reorda, J. Velasco-Medina","doi":"10.1109/LATW.2010.5550334","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550334","url":null,"abstract":"Today's SoCs are composed of a high variety of modules, such as microprocessor cores, memories, peripherals, and customized blocks directly related to the targeted application. Testing a peripheral core embedded in a SoC requires two correlated phases: module configuration and module operation. The first one prepares the peripheral on the different operation modes, whereas, the second one is in charge of exciting the whole device and observing its behavior. Different testing strategies based on the execution of assembly programs have been proposed by the research community to test the embedded blocks in a SoC, however, testing highly embedded peripherals (e.g., DMA controllers) is still a challenging task, since their observability and controllability are even more reduced compared to peripherals devoted to I/O communication. In this paper we describe an approach to develop functional tests for DMA controllers embedded in SoCs that can first be used for design validation, and then exploited for testing, adding observability features. Preliminary experimental results demonstrating the method suitability are finally reported.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131449556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"RF and Microwave production test requirements for advanced mixed-signal devices","authors":"M. Mabrouk","doi":"10.1109/LATW.2010.5550381","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550381","url":null,"abstract":"Basic requirements and rules of Test and Measurement in RF and Microwaves, as well for characterization on benches as for high volume production using Automatic Test Equipments are described for helping today's test engineers to develop their own customized “turn-key” test solutions. Some examples of RF and microwave tests for Low Noise Amplifier and Mixer that are the devices largely used in Wireless applications are showed. The devices were characterized on benches and automatically tested using ATE testers.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132709535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reliability of on-board computer for ITASAT university satellite","authors":"E. Vinci, O. Saotome","doi":"10.1109/LATW.2010.5550367","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550367","url":null,"abstract":"This paper presents a case study that aims to develop a hardware architecture for the computer to the ITASAT university satellite, based on fault-tolerant architecture and calculations of reliability. The on-board computer of a satellite, inserted into the on Board Management Subsystem, has functions of receiving, processing and distribution of commands to the subsystems and payload of the satellite; and acquiring, formatting, storage and transmission of telemetry from subsystems and payload. The main requirements of an on-board computer are high reliability, capability of real time processing, resistance to radiation, and minimizing power consumption, volume and mass. Increased reliability can be achieved by the fault tolerance technique, which is based on adding redundancy to the system, or the use of components with high value of individual reliability. In this work, hardware redundancy techniques are considered. First, a computer is designed and its reliability is calculated, for a mission of twenty-four months duration. Mission reliability goal is not attained in this calculation. In order to increase reliability, two types of fault tolerant redundant architectures are analyzed, with their respective reliabilities calculated for the same period of the mission.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"27 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134543971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Embedded test and control of analogue/RF circuits using intelligent resources","authors":"E. Simeu","doi":"10.1109/LATW.2010.5550354","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550354","url":null,"abstract":"The emergence and the fast development of distributed sensor networks associated with the popularisation of cellular phone handset portable has supported an explosive growth of wireless applications in the portable devices. Consequently radio frequency (RF) system and their increasing functional densities have progressed remarkably. Wireless integrated network sensors combine sensing, signal processing, decision capability, and wireless networking capability in a compact, low power system. Despite the rapid proliferation of sensor network applications and other devices incorporating wireless communication networks, there is no generic method for testing analogue and mixed signal (AMS) blocks (including analogue circuits, MEMS and RF) which are included in these devises. On the other hand, it is obvious that energy efficiency of RF transceivers is critical paramount for longer life in portable devices. Therefore, efficient energy consumption of RF power amplifiers (PAs) and RF low noise amplifiers (LNAs) are key components in wireless mobile battery – operated systems determine the total power consumption since they dominate the power consumption of the other component of the RF transceivers [1]. In this study, we propose a new approach of alternate test and adaptive control of power supply of AMS blocks based on the identification of some parameters of a behavioural model. A complete behavioural model of AMS block is built, including a model structure and a set of parameters. Using a population of circuits obtained by Monte Carlo simulation, a regression relationship is then built to link the system performance to the parameters of its behavioural model. A virtual performance measurement can thus be obtained from the identified parameters of the behavioural model of the current system. The estimated performances are then used either to make the pass / fail decision for test purpose or as virtual measurements for performance control of in order to optimize energy consumption. Figure 1 gives an overview of our approach.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129847597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hector Villacorta, V. Champac, C. Hawkins, J. Segura
{"title":"Reliability analysis of small delay defects in vias located in signal paths","authors":"Hector Villacorta, V. Champac, C. Hawkins, J. Segura","doi":"10.1109/LATW.2010.5550366","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550366","url":null,"abstract":"Vias-open defects are one of the dominant failures in modern nanometer technologies and may pose a reliability issue. In this paper, the reliability electromigration risk posed by undetected small delays due to resistive opens in vias located in signal paths is quantified. The Mean Time to Failure as function of the void size, using a cylinder model for the defective via, is estimated. Both effects, electromigration and self heating, have been considered. Reliability analysis considering redundant vias is also presented.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129338061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Olmos, A. V. Boas, Eduardo Ribeiro da Silva, José Carlos da Silva, R. Maltione
{"title":"Test mode method and strategy for RF-based fault injection analysis for on-chip relaxation oscillators under EMC standard tests or RFI susceptibility characterization","authors":"A. Olmos, A. V. Boas, Eduardo Ribeiro da Silva, José Carlos da Silva, R. Maltione","doi":"10.1109/LATW.2010.5550382","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550382","url":null,"abstract":"Nowadays some microcontroller clock circuits have been implemented using relaxation oscillators instead of quartz type approach to attend cost effective designs. The oscillator is compensated over temperature and power supply and trimming during device test phase adjusts the oscillation frequency on target to overcome process variations. In that way, the relaxation oscillator becomes competitive with regard to ceramic resonator options. However, robust applications as industrial, automotive and aero spatial, requires aggressive EMC tests reproducing the behavior in these environments. High levels of RF interference introduce frequency deviation, jitter or clock corruption causing severe faults on the application. This work discusses the impact of RF interference in relaxation oscillators proposing a strategy to implement test mode in microcontrollers and other complex SOCs, allowing yet characterization and fault debug. Theoretical analysis and experimental results with a silicon implementation are presented and discussed.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121573008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Haim, Andrés Bergeret, A. González, Ignacio Benavente
{"title":"Procedures and lab setup developed to test MIFARE based transportation devices compliance","authors":"F. Haim, Andrés Bergeret, A. González, Ignacio Benavente","doi":"10.1109/LATW.2010.5550335","DOIUrl":"https://doi.org/10.1109/LATW.2010.5550335","url":null,"abstract":"In this work, the procedures and custom lab equipment developed to assess the RFID features of on board faring devices is presented. Compliance with the Municipality of Montevideo specification tests were designed and carry out by LATU staff. During the last three years, 36 reports were completed and a software tool was granted to the Municipality for their own tests. LATU´s technical compliance reports helped the IMM to progressively deploy the new transportation system and also helped the device developers to improve their products. The flexibility of the tools developed made them easy to adapt for different stages of the compliance process.","PeriodicalId":358177,"journal":{"name":"2010 11th Latin American Test Workshop","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125031364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}