Seminar – SciTech

Seminar: Scheduling and Memory Management for Large-Scale Applications: From Caches to Burst Buffers

by Ciji on February 22, 2020 with No Comments

Abstract: This talk explores scheduling problems in the context of large-scale applications from a memory perspective. We focus here on two very different levels of memory in the hierarchy: caches and burst buffers.With the recent advent of many-core architectures such as chip multiprocessors … Read More

Seminar: DISTRIBUTE HIGH THROUGHPUT COMPUTING AT WORK, AN OSG STATUS REPORT

by Karan Vahi on February 10, 2020 with No Comments

Abstract: For more than 15 years, the Open Science Grid (OSG) has been offering the science community a fabric of distributed High Throughput Computing (dHTC) services. In close collaboration with science and campus communities as well as resource and software … Read More

Seminar: defoe: A Spark-based Toolbox for Analysing Digital Historical Textual Data

by Rafael Ferreira da Silva on October 3, 2019 with No Comments

In this talk will present defoe, a new scalable and portable digital toolbox that enables historical research. It allows for extracting knowledge from historical data by running text analyses across large digital collections, such as historical newspapers and books in parallel. … Read More

Seminar: The Cyberinfrastructure of Gravitational-wave Astronomy and March towards LIGO Open Data

by Ciji on June 4, 2019 with No Comments

The discovery of gravitational waves by LIGO and Virgo has been a revolution event in astronomy and physics. In this talk, I will discuss some of the cyberinfrastructure that is used to explore the universe with gravitational waves, including: the … Read More

Seminar: Co-scheduling for large-scale applications: memory and resilience

by Rafael Ferreira da Silva on May 28, 2019 with No Comments

This talk explores co-scheduling problems in the context of large-scale applications with two main focus: the memory side, in particular the cache memory and the resilience side. With the recent advent of many-core architectures such as chip multiprocessors (CMP), the … Read More

Seminar: Checkpointing Workflows for Fail-Stop Error

by Rafael Ferreira da Silva on October 17, 2018 with No Comments

We consider the problem of orchestrating the execution of workflow applications structured as Directed Acyclic Graphs (DAGs) on parallel computing platforms that are subject to fail-stop failures. The objective is to minimize expected overall execution time, or makespan. A solution … Read More

Seminar: The ATLAS Experiment at CERN with PanDA

by Rafael Ferreira da Silva on October 15, 2018 with No Comments

The ATLAS experiment at CERN uses PanDA (Production and Data Analysis) Workload Management System for managing the workflow for all data processing on over 150 data centers. Through PanDA, ATLAS physicists see a single computing facility that enables rapid scientific … Read More

Seminar: Reducing the Human-in-the-Loop Component of the Scheduling of Large HTC Workloads

by Rafael Ferreira da Silva on August 8, 2018 with No Comments

A common characteristic to major physics experiments is an ever increasing need of computing resources to process experimental data and generate simulated data. The IN2P3 Computing Center (CC-IN2P3) provides its 2,500 users with about 35,000 cores and processes millions of … Read More

Seminar: Research and development of advanced information processing technologies and intelligent systems for supporting geosciences innovations

by Rafael Ferreira da Silva on November 30, 2017 with No Comments

Since October 2016, Rosa Filgueira has been working at the British Geological Survey (BGS) as a Senior Data Scientist. She is involved in a variety of national and international research projects where she applies different technologies from Data Science and … Read More

Seminar: The Center for Trustworthy Scientific Cyberinfrastructure: Five Years Later

by Rafael Ferreira da Silva on October 27, 2017 with No Comments

In March of 2013 I visited ISI and presented on what was then the fledging Center for Trustworthy Scientific Cyberinfrastructure (CTSC), an effort to provide the NSF community with cybersecurity expertise and leadership. It’s been nearly five years since and … Read More