Development of a benchmark suite for large vector architectures into a continuous integration workflow

En el món del "High-Performance Computing", el processador és essencial. Recentment, Europa està fent grans esforços en promoure tecnologia europea. La "European Processor Initiative" sorgeix d'aquest esforç. Com a part de la iniciativa, múltiples processadors estan sent dissenyats. Alguns implementant l'arquitectura "RISC-V", una "ISA" "open-source". Al llarg del desenvolupament del processador, disposar d'eines és fonamental per facilitar el testatge i automatitzar tasques. Aquest treball final de grau es focalitza en millorar una "pipeline" de "Continuous integration" emprada per detectar errors en un entorn Linux i en una "Field Programmable Gate Array (FPGA)" emulant un comportament d'usuari final.In the High-Performance Computing world, the processor is essential. In recent years, Europe has devoted a lot of effort into promoting European technology. The European Processor Initiative stems from this effort. As part of the initiative, multiple processors are being developed. Some implementing the RISC-V architecture, an open-source ISA. During the development of a processor, tools are fundamental to ease testing and automatize tasks. This final degree project focuses on improving a Continuos Integration pipeline used to detect bugs in an Field Programmable Gate Array (FPGA) and Linux environments emulating final user behaviour

Cross-connection management specialisation for WDM-OTN's

WDM optical transport networks (WDM-OTN) will use new all-optical nodes that will perform functions in the optical domain, using wavelength as a new network resource. This paper presents a new approach for the optical cross-connect (OXC) routing operation that takes into account a diminished connection capability.Peer ReviewedPostprint (published version

Using multi-scale spatial prioritization criteria to optimize non-natural mortality mitigation of target species

Non-natural mortality is a major threat to animal conservation worldwide. Its origins are extremely diverse and include infrastructures that cause animal casualties. Its effects are widely felt and so prioritization criteria are necessary when implementing mitigation actions. Most of the threats causing non-natural mortality have in common the fact that they are distributed unevenly across several spatial scales. Thus, here we present a protocol for prioritizing conservation measures in: (i) population fractions suffering from high levels of non-natural mortality whose demographic effects are the most serious, and in (ii) areas with the highest risk of casualties due to heterogeneities in both spatial use by individuals and the inherent hazards of the infrastructures causing mortality. To do so, the protocol consist of 5 steps: 1) to identify sink populations over large geographical areas; 2) to identify sink areas of high mortality within target populations; 3) to identify areas intensively used by individuals in target areas; 4) to identify spatial points or individual infrastructures showing high mortality risk; and 5) using direct evidence of casualties to complete information on high-risk sites and infrastructures. To show the potential of this protocol, we use as an example the mitigation of mortality due to electrocution in Bonelli's eagle in SW Europe, where this species is of conservation concern. Thanks to the retrofitting of dangerous pylons, we demonstrate that our protocol can help restore Bonelli's eagle territories to levels that will ensure the persistence of the studied population. In addition, we show that our criteria enhance the optimization of resource investment in mortality mitigation as our criteria identify the pylons with the most devastating effects on the population. To summarize, we provide the basis for a framework applicable to many different species and scenarios whose costs in terms of mitigation actions and benefits in terms of population viability prospects can be explicitly calculated

Technologies for Cost-Effective UDWDM-PONs

New technologies for ultradense WDM-PON (udWDM-PON), enabled by coherent techniques and low-cost devices, are developed for an efficient utilization of the optical spectrum, revealing that the 'Wavelength-to-the-User' concept can be feasible. In this paper, an udWDM-PON with only 6.25-GHz channel spacing is implemented with conventional DFB lasers, for a splitter-based PON infrastructure with 256 ONUs. The results of the analysis of udWDM access network architecture with respect to their associated complexity, cost, and migration scenarios, exhibit the potential for higher aggregate throughput, higher split ratios, and node consolidation, when compared to competing technologies

Foreword to the Special Issue on European Conference on Optical Communications(ECOC 2015)

[EN] ECOC is the leading forum in Europe for keeping up with the top research advances and scientific discoveries in devices, subsystems, systems and networks in the field of optical communications and related photonic technologies. With a global attendance and delegates coming from all over the five continents, ECOC provides a unique opportunity for networking and interaction that nobody interested in the field should miss. ECOC 2015 took place from September 27th to October 1st 2015 in Valencia, Spain.Bogoni, A.; Petropoulos, P.; Rafel, A.; Teixeira, A.; Fernandez-Palacios Gimenez, JP.; Muñoz Muñoz, P.; Killey, R.... (2016). Foreword to the Special Issue on European Conference on Optical Communications(ECOC 2015). Journal of Lightwave Technology. 34(5):1406-1410. doi:10.1109/JLT.2016.2528358S1406141034

Assessing the Feasibility and Acceptability of a Primary Care Socio-Ecological Approach to Improve Physical Activity Adherence among People with Type 2 Diabetes : The SENWI Project

Ajuts: This research was funded by Col·legi de Fisioterapeutes de Catalunya (CFC), grant number R05/21.Maintaining an active lifestyle is a key health behavior in people with type 2 diabetes (T2D). This study assessed the feasibility and acceptability of a socio-ecological Nordic walking intervention (SENWI) to enhance healthy behaviors in primary healthcare settings. Participants included individuals with T2D (n = 33; age 70 (95% CI 69-74)) and healthcare professionals (HCPs, n = 3). T2D participants were randomly assigned to a SENWI, active comparator, or control group for twelve weeks. Feasibility and acceptability were evaluated based on a mixed methodology. Quantitative data reported adherence information, differences between follow-up and dropout participants and pre- and post-intervention on physical activity, sedentary behavior, and health outcomes. Qualitative data acquisition was performed using focus groups and semi-structured interviews and analyzed using thematic analysis. Thirty-three T2D invited participants were recruited, and twenty-two (66.7%) provided post-intervention data. The SENWI was deemed acceptable and feasible, but participants highlighted the need to improve options, group schedules, gender inequities, and the intervention's expiration date. Healthcare professionals expressed a lack of institutional support and resources. Nevertheless, no significant difference between the SENWI follow-up and dropout participants or pre- and post- intervention was found (only between the active comparator and control group in the physical quality of life domain). Implementing the SENWI in primary healthcare settings is feasible and acceptable in real-world conditions. However, a larger sample is needed to assess the program's effectiveness in improving healthy behaviors and its impact on health-related outcomes in the long term

The quantitative role of microzooplankton grazing in dimethylsulfide (DMS) production in the NW Mediterranean

The ubiquitous, biogenic trace gas dimethylsulfide (DMS) represents the largest natural source of atmospheric sulfur. Given DMS involvement in cloud formation and climate, understanding and parameterizing the oceanic DMS source and cycling processes is a necessary challenge. We report DMS cycling rates from microzooplankton dilution grazing experiments conducted monthly during 1 year in coastal northwestern Mediterranean waters. Concentrations of DMS, its algal precursor dimethylsulfoniopropionate (DMSPt) and chlorophyll a (Chla) ranged 0.9–11 nmol L−1, 10–71 nmol L−1, and 0.2–1.5 µg L−1, respectively. By comparing the growth and stock production rates of the DMSP-producing algae to those of total phytoplankton, we estimated that 3 ± 4% (range 0.4–12%) of the carbon primary production was invested in DMSP biosynthesis. Microzooplankton grazing rates on DMSP-producing phytoplankton (0.46–1.45 day−1) were generally higher than those on the bulk assemblage (0.08–0.99 day−1), except in midsummer months. This could have been due to the smaller size of most DMSP producers. There was no indication of micrograzer selection against DMSP-containing phytoplankton, since they were not grazed at lower rates than the bulk phytoplankton assemblage. A proportion of 6–20% of the grazed DMSP was converted into DMS, and this grazing-derived production accounted for 32–96% of dark gross DMS production by the total community. Bacteria consumed daily ≤ 14–100% of the gross DMS production, which resulted in biological DMS turnover times of 1 to ≥ 10 days. Throughout the year, grazing-mediated DMS production explained 73% of the variance in the DMS concentration, implying that microzooplankton grazing plays a major role in controlling DMS concentration in surface waters across a broad range of environmental and productivity conditions in the Mediterranean Sea. These findings should help improve the representation of herbivore grazing in prognostic models to predict the distribution and dynamics of the global DMS emission and its feedback response to changing climateThis work was supported by the Spanish Ministries of Science through the projects MICROROL (CTM2004-02575/MAR to A.C.), SUMMER (CTM2008-03309 to R.S.), BIOGAPS (CTM2016-81008-R to R.S.) and FERMI (CGL2014-59227-R to A.C. and E.S.), and PhD fellowships to V.S. and R.A.Peer Reviewe