Vanderlei Munhoz, Nicolas Vanz and Pedro Moritz presented their works at the XIV Simpósio em Sistemas Computacionais de Alto Desempenho (WSCAD 2023). This year, WSCAD 2023 was held in conjunction with the 35th EEE International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD 2023), in Porto Alegre, Brazil. Vanderlei Munhoz also presented a paper at the Workshop on Cloud Computing (WCC 2023), one of the workshops of SBAC-PAD 2023. These students are advised by Prof. Márcio Castro.
You can find bellow the list of papers presented in these events:
- A Performance Comparison of HPC Workloads on Traditional and Cloud-based HPC Clusters
Vanderlei Munhoz (UFSC), Antoine Bonfils (Polytech Grenoble), Márcio Castro (UFSC), Odorico Mendizabal (UFSC)
- Evaluating the Parallel Simulation of Dynamics of Electrons in Molecules on AWS Spot Instances
Vanderlei Pereira Filho (UFSC), Márcio Castro (UFSC), Luis Guilherme Carvalho Rego (UFSC)
- Virtualização e Migração de Processos em um Sistema Operacional Distribuído para Lightweight Manycores
Nicolas Vanz (UFSC), João Souto (UFSC), Márcio Castro (UFSC)
- Balanceamento de Carga Dinâmico em Ambientes Kubernetes com o Kubernetes Scheduling Extension (KSE)
Pedro Moritz de Carvalho Neto (UFSC), Márcio Castro (UFSC), Frank Siqueira (UFSC)
Samuel Amico Fidelis has earned his master’s degree in Computer Science from PPGCC/UFSC on 26/06/2023. His M.Sc. dissertation entitled “A Distributed Architecture for Edge AI Computing” was advised by professors Márcio Castro and Frank Siqueira. The jury was composed by the following members: Ivanovitch Medeiros Dantas da Silva (UFRN), Mario Antonio Ribeiro Dantas (UFJF) and Douglas Dyllon Jerônimo de Macedo (UFSC).
The defense is available at: https://www.youtube.com/live/3PZWPpBU1lY.
Vanderlei Munhoz presented his work entitled Strategies for Fault-Tolerant Tightly-coupled HPC Workloads Running on Low-Budget Spot Cloud Infrastructures at the EEE International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD 2022), which was held in Bordeaux, France. This work was coauthored by Prof. Márcio Castro and Prof. Odorico Mendizabal.
In this work, Vanderlei evaluated the viability of budget-constrained cloud environments for tightly-coupled MPI applications, exploring both spot and traditional low-budget infrastructures from real public cloud platforms. Two different fault tolerance strategies tailored for unreliable spot cloud environments have been proposed: system-level rollback restart with Berkeley Labs Checkpoint/Restart (BLCR) and in-memory rollback restart with User-Level Failure Mitigation (ULFM). A provider-agnostic empirical method for testing and predicting MPI workloads execution times and cloud infrastructure costs was also proposed. The results showed that: (i) adequate cluster sizing plays an important role in the overall job execution performance and cost-effectiveness, regardless of the type of selected instances; (ii) fault tolerance strategies based on BLCR may have worse performance than ULFM, but still be cost-effective considering software migration costs; (iii) the use of spot infrastructure does not guarantee costs savings depending on the chosen machine flavors and discounts, as experiments with persistent low-budget options attained better cost-effectiveness in some conditions.
João Vicente Souto has earned his master’s degree in Computer Science from PPGCC/UFSC on 14/07/2022. His M.Sc. dissertation entitled “A Task-based Execution Engine for Distributed Operating Systems Tailored to Lightweight Manycores with Limited On-Chip Memory” was advised by professor Márcio Castro. The jury was composed by the following members: Rômulo de Oliveira (UFSC), Pedro Penna (Microsoft Research), Odorico Mendizabal (UFSC).
The defense is available at: https://www.youtube.com/watch?v=ptoyABxC6fA&t=252s.
The “XXIII Simpósio em Sistemas Computacionais de Alto Desempenho (WSCAD 2022)”, which is the brazilian conference on High Performance Computing (HPC), was organized by Prof. Márcio Castro (UFSC) and Prof. Odorico Mendizabal (UFSC) and was held at the Majestic Palace Hotel in Florianópolis/SC. Students from LaPeSD and PET/UFSC have also participated as local staff. In this year, more than 140 people came to Florianópolis/SC to participate in the event.
João Vicente Souto is the winner of the M.Sc. Dissertation Contest in Computer Architecture and High Performance Computing (WSCAD-CTD 2022). In his work, entitled “A Task-based Execution Engine for Distributed Operating Systems Tailored to Lightweight Manycores with Limited On-Chip Memory“, João proposed a task-based execution engine that allows the implementation of Distributed Operating System services with low memory consumption and low latency. He was advised by Prof. Márcio Castro (UFSC).
The paper entitled “Virtualização e Migração de Processos em um Sistema Operacional Distribuído para Lightweight Manycores”, co-authored by Nicolas Vanz, João Souto and Márcio Castro (UFSC), received the Best Paper Award at the XXII Escola Regional de Alto Desempenho da Região Sul (ERAD/RS 2022), which took place in Curitiba/PR, Brazil from April 18th to 20th, 2022. Nicolas is an undergraduate student supervised by Prof. Márcio working on process migration in a Operating System that targets lightweight manycore processors.
Students from LaPeSD participated in the Marathon of Parallel Programming, which was held in conjunction with International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD) and Simpósio em Sistemas Computacionais de Alto Desempenho (WSCAD) (online events). The teams were composed of the following students:
- LaPeSD/UFSC: Emmanuel Podestá Jr., João Vicente Souto and Luiz Gustavo Xavier
- LaPeSD Equipe 2: Sérgio Pfleger, Vanderlei Munhoz and José Luiz de Sousa
Both teams were coached by Prof. Márcio Castro and they had about 28 hours to paralelize and optimize up to 5 problems (higher the performance improvements, the higher the score achieved by the teams). The final score board is shown below.
This year, we are very proud to announce that “LaPeSD/UFSC” and “LaPeSD Equipe 2” teams were ranked first (score 184.470338) and fourth (score 67.346131) places in the competition, respectively! Congratulations guys!
João Fellipe Uller has defended his final project on 13/05/2021. His research work entitled “A Simple MPI Library for Lightweight Manycore Processors” was advised by prof. Márcio Castro and Pedro Henrique Penna. The jury was composed by prof. Odorico Mendizabal (UFSC) and prof. Frank Siqueira (UFSC).
Vinicius Freitas received the Best MSc Student Award of 2020 from the Graduate Program in Computer Science (PPGCC) of UFSC. In his work, entitled “Diffusive Load Balancing for High Performance Computing Applications: Workload Discretization and Graph Processing“, Vinicius proposed distributed load balancers for highly parallel platforms. He was advised by Prof. Márcio Castro (UFSC) and coadvised by Prof. Laércio Pilla (CNRS – France).
You can check out his MSc defense on Youtube.
