About

This is Lucas Villa Real's corner at GoboLinux.org. Here you will find some bits from current and past projects along with scientific publications that reflect my collaboration with co-workers and friends.

I'm currently a software engineer at osdyne, Inc. Previously, I worked at IBM Reseach and at the Integrated Systems Lab at the University of São Paulo.

Please see my profile on LinkedIn for more work-related information.

Projects I am associated with

You will find several projects I have authored at my GitHub page. These are my favorite ones:



Linear Tape File System (LTFS). I worked on the design and implementation of LTFS for single drives and large libraries.
Along with my team, I received a surreal Emmy award for the way our work transformed the Media and Entertainment industry.
This IBM blog post has some more details about the Emmy. Good times!


HDF5-UDF. User-defined functions for the HDF5 scientific file format. This project disguises such functions as regular datasets that, once read, execute the associated code and populate the dataset contents on-the-fly. Here's a demo showing the classic Doom game ported to HDF5-UDF.


GoboLinux. A Linux distribution that redefines the file system hierarchy. We've pioneered concepts such as the merge of /usr, proposed a new layout for the filesystem tree that inspired projects such as Homebrew, created virtualization mechanisms that allowed the coexistence of conflicting programs and libraries, and many more.


Runner. A container-free filesystem virtualization tool that runs on top of GoboLinux. We use it to multiplex the filesystem so that different programs have a different view of /usr.


DemuxFS. A live filesystem that aids on the analysis of transport streams in digital TV systems.

Past & fun projects

GP32. I bought a portable videogame console back in the day so I could port Linux to it. Here are the patches I produced along the way.


ARM-based laptop. Way before netbooks became a thing, I had a really good time with friends Marcelo Fonseca and Marcelo Miranda creating a prototype of an ARM-based laptop. The prototype shown in this picture was running GoboLinux.


XLode. Used an accelerometer as input device for Hisham Muhammad's XLode game.

Publications

• Whither Visualization Logic
  Leigh Orf, Lucas C. Villa Real, Gerd Heber
  ASCR Workshop on Visualization for Scientific Discovery, Decision-Making & Communication, 2022
  
  
• User-Defined Functions for HDF5
  Lucas C. Villa Real, Maximilien de Bayser
  HDF5 User Group Meeting, 2021
  
  
• Context-aware Execution Migration Tool for Data Science Jupyter Notebooks on Hybrid Clouds
  Renato L. F. Cunha, Lucas C. Villa Real, Renan Souza, Bruno Silva, Marco A. S. Netto
  eScience 2021: 17th IEEE International Conference on eScience
  
  
• Seamless translation of modern file formats to SEG-Y through the file system interface [slides]
  Lucas C. Villa Real, Maximilien de Bayser
  EAGE Digital 2020
  
  
• Large-scale 3D geospatial processing made possible [slides]
  Lucas C. Villa Real, Bruno Silva, Dikran Meliksetian, Kaique Maestrini Sacchi
  ACM SIGSPATIAL: 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2019
  
  
• Taxonomy of Package Management in Programming Languages and Operating Systems
  Hisham Muhammad, Lucas Correia Villa Real, and Michael Homer
  PLOS: Workshop on Programming Languages and Operating Systems, 2019
  
  
• Full Speed Ahead: 3D Spatial Database Acceleration with GPUs [slides] [dataset]
  Lucas C. Villa Real, Bruno Silva
  ADMS 2018: 9th International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures
  
  
• A Lightweight and Efficient Mechanism for Fixing the Synchronization of Misaligned Subtitle Documents
  Rodrigo Laiola Guimaraes, Priscilla Avegliano, Lucas Villa Real
  DocEng 2016: 16th ACM Symposium on Document Engineering, 2016
  
  
• Online Algorithms for the Linear Tape Scheduling Problem
  Carlos Cardonha, Lucas Villa Real
  ICAPS 2016: 26th International Conference on Automated Planning and Scheduling, 2016
  
  
• Dynamic Adjustment of Subtitles Using Audio Fingerprints [poster]
  Lucas C. Villa Real, Rodrigo Laiola Guimaraes, Priscilla Barreira Avegliano
  ACMMM 2015: ACM Multimedia Conference, 2015
  
  
• An I/O Scheduler for Dual-Partitioned Tapes
  Lucas C. Villa Real, Michael Richmond, Brian Biskeborn, David Pease
  IEEE NAS 2015: 10th IEEE International Conference on Networking, Architecture, and Storage
  
  
• Architecture Aware Resource Allocation for Structured Grid Applications: Flood Modelling Case
  Vaibhav Saxena, Thomas George, Yogish Sabharwal, Lucas Villa Real
  IEEE/ACM CCGrid 2015: 15th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing
  
  
• A Python-Based Automatic Data Aggregation Framework for Hydrology Models
  Lucas C. Villa Real, Frank Liu, Thomas Osiecki
  AMS 2014: 94th American Meteorological Society Annual Meeting, American Meteorological Society
  
  
• IFM: A Scalable High Resolution Flood Modeling Framework
  Swati Singhal, Sandhya Aneja, Frank Liu, Lucas Villa Real, Thomas George
  Euro-Par 2014: 20th International Conference on Parallel Processing
  
  
• Enabling high-resolution forecasting of severe weather and flooding events in Rio de Janeiro
  LA Treinish, AP Praino, JP Cipriani, UT Mello, K Mantripragada, LC Villa Real, PA Sesini, V Saxena, T George, R Mittal
  IBM Journal of Research and Development 57(5), 7--1, IBM, 2013
  
  
• A hybrid parallelization approach for high resolution operational flood forecasting
  Swati Singhal, Lucas Villa Real, Thomas George, Sandhya Aneja, Yogish Sabharwal
  HiPC 2013: 20th International Conference on High Performance Computing, pp. 405--414
  
  
• File-based media workflows using LTFS tapes
  Arnon Amir, David Pease, Rainer Richter, Brian Biskeborn, Michael Richmond, Lucas Villa Real
  ACMMM 2010: Proceedings of the international conference on Multimedia, pp. 1519--1520
  
  
• The Linear Tape File System
  David Pease, Arnon Amir, L Villa Real, Brian Biskeborn, Michael Richmond, Atsushi Abe
  IEEE MSST 2010: 26th Symposium on Mass Storage Systems and Technologies, pp. 1--8
  
  
• IZO: Applications of Large-Window Compression to Virtual Machine Management.
  Mark A Smith, Jan Pieper, Daniel Gruhl, Lucas Villa Real
  USENIX LISA 2008: 22nd Large Installation System Administration Conference, pp. 121--132