All Stories

  1. Digital forensic analysis of the private mode of browsers on Android

    Article • Computers & Security, November 2023, Elsevier

    Dr Tomas F. Pena

  2. Security by Design for Big Data Frameworks Over Cloud Computing

    Article • IEEE Transactions on Engineering Management, December 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  3. CIMAR, NIMAR, and LMMA: Novel algorithms for thread and memory migrations in user space on NUMA systems using hardware counters

    Article • Future Generation Computer Systems, April 2022, Elsevier

    Dr Tomas F. Pena

  4. Big Data in metagenomics: Apache Spark vs MPI

    Article • PLoS ONE, October 2020, PLOS

    Dr Tomas F. Pena

  5. TrustE-VC: Trustworthy Evaluation Framework for Industrial Connected Vehicles in the Cloud

    Article • IEEE Transactions on Industrial Informatics, September 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  6. LBMA and IMAR2: Weighted lottery based migration strategies for NUMA multiprocessing servers

    Article • Concurrency and Computation Practice and Experience, August 2020, Wiley

    Dr Tomas F. Pena

  7. Automatic Extraction of Road Points from Airborne LiDAR Based on Bidirectional Skewness Balancing

    Article • Remote Sensing, June 2020, MDPI AG

    Dr Tomas F. Pena

  8. Cloud Computing for Climate Modelling: Evaluation, Challenges and Benefits

    Article • Computers, June 2020, MDPI AG

    Dr Tomas F. Pena

  9. A New Hardware Counters Based Thread Migration Strategy for NUMA Systems

    Article • January 2020, Springer Science + Business Media

    Dr Tomas F. Pena

  10. Fast Ground Filtering of Airborne LiDAR Data Based on Iterative Scan-Line Spline Interpolation

    Article • Remote Sensing, September 2019, MDPI AG

    Dr Tomas F. Pena

  11. Big Data Security Frameworks Meet the Intelligent Transportation Systems Trust Challenges

    Article • August 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  12. Common Security Criteria for Vehicular Clouds and Internet of Vehicles Evaluation and Selection

    Article • August 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  13. AUTOMATIC DETECTION AND CHARACTERISATION OF POWER LINES AND THEIR SURROUNDINGS USING LIDAR DATA

    Article • The International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences, June 2019, Copernicus GmbH

    Dr Tomas F. Pena

  14. Poster

    Article • May 2019, ACM (Association for Computing Machinery)

    Dr Tomas F. Pena

  15. A Developer-Friendly “Open Lidar Visualizer and Analyser” for Point Clouds With 3D Stereoscopic View

    Article • IEEE Access, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  16. Comparative study of building footprint estimation methods from LiDAR point clouds

    Article • October 2017, SPIE

    Dr Tomas F. Pena

  17. MPI-Performance-Aware-Reallocation: method to optimize the mapping of processes applied to a cloud infrastructure

    Article • Computing, August 2017, Springer Science + Business Media

    Dr Tomas F. Pena

  18. PASTASpark: multiple sequence alignment meets Big Data

    Article • Bioinformatics, June 2017, Oxford University Press (OUP)

    Dr Tomas F. Pena

  19. Graph-based approach for airborne light detection and ranging segmentation

    Article • Journal of Applied Remote Sensing, March 2017, SPIE

    Dr Tomas F. Pena

  20. Enabling BOINC in infrastructure as a service cloud system

    Article • Geoscientific Model Development, February 2017, Copernicus GmbH

    Dr Tomas F. Pena

  21. A study of the influence of VM allocation policies on MPI Bcast and MPI Exchange latency in cloud

    Article • IEEE Latin America Transactions, January 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  22. EME: An Automated, Elastic and Efficient Prototype for Provisioning Hadoop Clusters On-demand

    Article • January 2017, Scitepress

    Dr Tomas F. Pena

  23. Landing sites detection using LiDAR data on manycore systems

    Article • The Journal of Supercomputing, November 2016, Springer Science + Business Media

    Dr Tomas F. Pena

  24. A rule-based classification from a region-growing segmentation of airborne lidar

    Article • October 2016, SPIE

    Dr Tomas F. Pena

  25. Graph-based segmentation of airborne lidar point clouds

    Article • October 2016, SPIE

    Dr Tomas F. Pena

  26. Enabling BOINC in Infrastructure as a Service Cloud Systems

    Article • Geoscientific Model Development Discussions, September 2016, Copernicus GmbH

    Dr Tomas F. Pena

  27. SparkBWA: Speeding Up the Alignment of High-Throughput DNA Sequencing Data

    Article • PLoS ONE, May 2016, PLOS

    Dr Tomas F. Pena

  28. Multivariate Analysis of Variance for High Energy Physics Software in Virtualized Environments

    Article • March 2016, Sissa Medialab, SRL

    Dr Tomas F. Pena

  29. Boosting performance of a Statistical Machine Translation system using dynamic parallelism

    Article • Journal of Computational Science, March 2016, Elsevier

    Dr Tomas F. Pena

  30. Big Data for sequence alignment

    Article • Bioinformatics, August 2015, Oxford University Press (OUP)

    Dr Tomas F. Pena

  31. A Flexible Cluster System for the Management of Virtual Clusters in the Cloud

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  32. Improving CPU Service Offerings in Apache CloudStack

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  33. BigDataDIRAC: Deploying Distributed Big Data Applications

    Article • May 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  34. Study of the KVM CPU Performance of Open-Source Cloud Management Platforms

    Article • May 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  35. A tool to deploy nanodevice simulations on cloud

    Article • February 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  36. Federated Big Data for Resource Aggregation and Load Balancing with DIRAC

    Article • Procedia Computer Science, January 2015, Elsevier

    Dr Tomas F. Pena

  37. Perldoop: Efficient execution of Perl scripts on Hadoop clusters

    Article • October 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  38. Multiobjective optimization technique based on monitoring information to increase the performance of thread migration on multicores

    Article • September 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  39. Implementation of the KVM Hypervisor on Several Cloud Platforms: Tuning the Apache CloudStack Agent

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  40. Cloud flexibility using DIRAC interware

    Article • Journal of Physics Conference Series, June 2014, Institute of Physics Publishing

    Dr Tomas F. Pena

  41. 3DyRM: a dynamic roofline model including memory latency information

    Article • The Journal of Supercomputing, March 2014, Springer Science + Business Media

    Dr Tomas F. Pena

  42. Assessment, Design and Implementation of a Private Cloud for MapReduce Applications

    Article • OALib, January 2014, Scientific Research Publishing, Inc,

    Dr Tomas F. Pena

  43. A hardware counter-based toolkit for the analysis of memory accesses in SMPs

    Article • Concurrency and Computation Practice and Experience, August 2013, Wiley

    Dr Tomas F. Pena

  44. Modeling the performance of parallel applications using model selection techniques

    Article • Concurrency and Computation Practice and Experience, April 2013, Wiley

    Dr Tomas F. Pena

  45. Nanodevice simulations on CloudStack

    Article • February 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  46. A flexible and dynamic page migration infrastructure based on hardware counters

    Article • The Journal of Supercomputing, January 2013, Springer Science + Business Media

    Dr Tomas F. Pena

  47. The Integration of CloudStack and OCCI/OpenNebula with DIRAC

    Article • Journal of Physics Conference Series, December 2012, Institute of Physics Publishing

    Dr Tomas F. Pena

  48. Using sampled information: is it enough for the sparse matrix-vector product locality optimization?

    Article • Concurrency and Computation Practice and Experience, October 2012, Wiley

    Dr Tomas F. Pena

  49. Performance of the CloudStack KVM Pod Primary Storage under NFS Version 3

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  50. Model Selection to Characterize Performance Using Genetic Algorithms

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  51. Hardware Counters Based Analysis of Memory Accesses in SMPs

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  52. A Graphical Tool for Performance Analysis of Multicore Systems Based on the Roofline Model

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  53. Estimating the effect of cache misses on the performance of parallel applications using analytical models

    Article • December 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  54. Using accurate AIC-based performance models to improve the scheduling of parallel applications

    Article • The Journal of Supercomputing, March 2011, Springer Science + Business Media

    Dr Tomas F. Pena

  55. Automatic parameter assessment of logp-based communication models in MPI environments

    Article • Procedia Computer Science, May 2010, Elsevier

    Dr Tomas F. Pena

  56. Analyzing the execution of sparse matrix-vector product on the Finisterrae SMP-NUMA system

    Article • The Journal of Supercomputing, February 2010, Springer Science + Business Media

    Dr Tomas F. Pena

  57. Performance Modeling of MPI Applications Using Model Selection Techniques

    Article • February 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  58. Accurate analytical performance model of communications in MPI applications

    Article • May 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  59. An Inspector/Executor Based Strategy to Efficiently Parallelize N-Body Simulation Programs on Shared Memory Systems

    Article • July 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  60. Parallel complete remeshing for adaptive schemes

    Article • International Journal of Computational Science and Engineering, January 2005, Inderscience Publishers

    Dr Tomas F. Pena

  61. A Load Balance Methodology for Highly Compute-Intensive Applications on Grids Based on Computational Modeling

    Article • January 2005, Springer Science + Business Media

    Dr Tomas F. Pena

  62. Modeling Execution Time of Selected Computation and Communication Kernels on Grids

    Article • January 2005, Springer Science + Business Media

    Dr Tomas F. Pena

  63. Parallel sparse approximate preconditioners applied to the solution of BEM systems

    Article • Engineering Analysis with Boundary Elements, September 2004, Elsevier

    Dr Tomas F. Pena

  64. Performance Prediction for Parallel Iterative Solvers

    Article • The Journal of Supercomputing, May 2004, Springer Science + Business Media

    Dr Tomas F. Pena

  65. A Grid-Enabled Air Quality Simulation

    Article • January 2004, Springer Science + Business Media

    Dr Tomas F. Pena

  66. Iterative solution of large linear systems with non-smooth submatrices using partial wavelet transforms and split-matrix matrix–vector multiplication

    Article • International Journal for Numerical Methods in Engineering, December 2003, Wiley

    Dr Tomas F. Pena

  67. : visualizing the performance prediction of parallel iterative solvers

    Article • Future Generation Computer Systems, July 2003, Elsevier

    Dr Tomas F. Pena

  68. A parallel 3D semiconductor device simulator for gradual heterojunction bipolar transistors

    Article • International Journal of Numerical Modelling Electronic Networks Devices and Fields, January 2003, Wiley

    Dr Tomas F. Pena

  69. Parallel iterative solvers involving fast wavelet transforms for the solution of BEM systems

    Article • Advances in Engineering Software, July 2002, Elsevier

    Dr Tomas F. Pena

  70. A performance visualization tool for HPF and MPI iterative solvers

    Article • January 2002, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  71. Article • The Journal of Supercomputing, January 2001, Springer Science + Business Media

    Dr Tomas F. Pena

  72. Dual BEM for crack growth analysis on distributed-memory multiprocessors

    Article • Advances in Engineering Software, December 2000, Elsevier

    Dr Tomas F. Pena

  73. PARALLEL IMPLEMENTATION OF A 3D BJT DEVICE SIMULATOR

    Article • May 2000, World Scientific Pub Co Pte Lt

    Dr Tomas F. Pena

  74. On parallel solvers for sparse triangular systems

    Article • Journal of Systems Architecture, May 2000, Elsevier

    Dr Tomas F. Pena

  75. Parallel finite element method to solve the 3D Poisson equation and its application to abrupt heterojunction bipolar transistors

    Article • International Journal for Numerical Methods in Engineering, January 2000, Wiley

    Dr Tomas F. Pena

  76. PARALLEL INCOMPLETE LU FACTORIZATION AS A PRECONDITIONER FOR KRYLOV SUBSPACE METHODS

    Article • Parallel Processing Letters, December 1999, World Scientific Pub Co Pte Lt

    Dr Tomas F. Pena

  77. Parallel Preconditioners for Solving Nonsymmetric Linear Systems

    Article • January 1999, Springer Science + Business Media

    Dr Tomas F. Pena

  78. Numerical analysis of abrupt heterojunction bipolar transistors

    Article • International Journal of Numerical Modelling Electronic Networks Devices and Fields, July 1998, Wiley

    Dr Tomas F. Pena

  79. Numerical analysis of abrupt heterojunction bipolar transistors

    Article • International Journal of Numerical Modelling Electronic Networks Devices and Fields, July 1998, Wiley

    Dr Tomas F. Pena

  80. Finite Element Resolution of the 3D Stationary Semiconductor Device Equations on Multiprocessors

    Article • Integrated Computer-Aided Engineering, January 1997, IOS Press

    Dr Tomas F. Pena

  81. Finite element simulation of semiconductor devices on multiprocessor computers

    Article • Parallel Computing, August 1994, Elsevier

    Dr Tomas F. Pena

  82. Image reconstruction on hypercube computers: Application to electron microscopy

    Article • Signal Processing, April 1992, Elsevier

    Dr Tomas F. Pena

  83. Filtering with the fast T transform

    Article • Electronics Letters, May 1990, the Institution of Engineering and Technology (the IET)

    Dr Tomas F. Pena

  84. Parallel complete remeshing for adaptive schemes

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  85. Parallel implementation of wavelet transforms on distributed-memory multicomputers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  86. Greedy Performance Metrics for Grid Schedulers

    Article • Civil-Comp, Ltd.

    Dr Tomas F. Pena

  87. Modelling and simulation of Al/sub x/Ga/sub 1-x/As/GaAs HBTs using the finite element method

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena

  88. Parallel Iterative Scheme for Solving BEM Systems using Fast Wavelet Transforms

    Article • Civil-Comp, Ltd.

    Dr Tomas F. Pena

  89. Dual Boundary Element Method for Crack Growth Analysis on Distributed-Memory Multiprocessors

    Article • Civil-Comp, Ltd.

    Dr Tomas F. Pena

  90. Solving sparse triangular systems on distributed memory multicomputers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Tomas F. Pena