Profile (CV) of the research teaching staff

Briz Velasco, José Luis
Department: Departamento de Informática e Ingeniería de Sistemas
Field: Arquitectura y Tecnología de Computadores
Faculty: Escuela de Ingeniería y Arquitectura

Research Institute: INSTITUTO DE INVESTIGACIÓN EN INGENIERÍA DE ARAGÓN (I3A)

UNESCO codes
  • Arquitectura de ordenadores

Number of 6-year periods of research productivity evaluation
  • CNEAI research evaluation. 01/01/23
  • CNEAI research evaluation. 01/01/17
  • CNEAI research evaluation. 01/01/08
Academic position: Prof. Titular Univ.
Personal web page: http://webdiis.unizar.es/~briz/
ORCID number: 0000-0001-5940-9837

Research interests
  • Ingenierías
  • Ciencias de la computación y tecnología informática

University degrees
  • Postgrado en informática. Centro Politécnico Superior Universidad de Zaragoza. 1990
  • Licenciado en Ciencias Sección Geología. Facultad de Ciencias. 1988

PhDs
  • Doctor Ingeniero en Informática. Centro Politécnico Superior Universidad de Zaragoza. 1996

Go to personal website Go to ORCID page

 
               
My research activity begins with my doctoral thesis, whose most notable result was the definition and properties of a fast firing-characterization system for Petri Nets, recognized and still cited in the field. I then moved on to research hardware data prefetching techniques (ICS'98) and prefetching in bus-based multiprocessors (Euro Micro PDP 2001). I co-supervised a doctoral thesis focused on irregular pattern detection that received the Best Paper Award at Intel's 1st Data Prefetching Championship (2009), later extended in JILP 2011. I collaborated with the MASC group at the University of California Santa Cruz (UCSC), aiming to improve the performance-consumption balance in GPGPUs by drawing on my experience in memory hierarchy. I proposed and implemented the instrumentation of ptx code (Nvidia-CUDA) to transfer relevant information at run-time to ESESC. Using this methodology, I proposed and co-supervised a thesis at UCSC to design and evaluate a per-PE Tiny Cache aimed at energy savings (ISLPED 2013); I designed the write-validate multiprocessor coherence protocol for these caches. I also collaborated on exploiting Voltage Stacking techniques for Near-Threshold Computing (TACO 2016, TVLSI 2018), contributing architectural measures to balance the load of units stacked on the same serial power rail.
In 2014 I began collaborating with CINVESTAV (Guadalajara, Mx.) to apply a TCPN-based thermal model to MPSoCs, incorporating energy and temperature constraints into multicore real-time scheduling (DEDS 2016, TECS 2019, WODES 16). This resulted in 2 co-supervised doctoral theses and 2 master's theses. Among the results obtained, a notable outcome is a system for generating cyclic executives for multicore systems under thermal and power constraints, based on fluid algorithms that are optimal but had until then seen no practical industrial application (JDEDS 2019, Access 2021, RA-L 2022, WODES 18 and 20).
I lead my current research line along three tracks: a) TCPN models of Time-Sensitive Networks (TSN) that enable the application of control techniques and, e.g., the determination of a schedule's sensitivity to timing errors; b) path selection and TSN scheduling; and c) precise time measurement and throughput improvement (XDP/DPDK). This involves co-supervising two theses (one under international joint supervision), two published journal papers (Q1, Q2), one under review, several conference papers, and collaboration with Intel.
I collaborated on a multidisciplinary project on geophysical methods used in CO2 storage prospecting. I contributed the addition of computerized mathematical models, leading to a highly original contribution with several high-impact publications, co-supervision of a Master's thesis (with an International Geophysics Award), and a doctoral thesis.
Of the five completed co-supervised doctoral theses, three were by women, two by members of ethnic minorities; one was supervised at UCSC, two at CINVESTAV (one under joint supervision with the University of Zaragoza). I am currently co-supervising two doctoral theses, one under an International Joint Supervision agreement with CINVESTAV. I am the GaZ Principal Investigator in the 2026 call (resolution pending resolution).
I regularly collaborate with industry on specific complex problems (security, performance, hard real-time constraint violations), primarily through supervision of undergraduate/master's final projects and, occasionally, through expert assessments.

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