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Organizing Committee
Caltech
Cornell University
University of Massachusetts Dartmouth
Cornell University
California State University Fullerton
California Institute of Technology
University of Mississippi
Cornell University
California Institute of Technology
Abstract
A new era of astronomical observation was announced in 2016 when the first-ever detection of gravitational waves from a binary black hole system occurred. Gravitational waves encode detailed information about the astrophysical systems they emerge from and complement what can be learned through traditional light-based observation.
Gravitational wave science requires high-fidelity numerical simulations of the expected merger events. The Simulating eXtreme Spacetimes (SXS) collaboration has managed the development of two distinct codes for this purpose: (i) the Spectral Einstein Code (SpEC) based on pseudospectral methods, and (ii) an open-source code SpECTRE, an hp-adaptive discontinuous Galerkin scheme that also includes a sub-cell finite volume scheme in regions of strong shock formation that is ideally suited for multi-scale, multi-physics problems. SpECTRE targets problems in multi-messenger astrophysics, including neutron star mergers, core-collapse supernovae, and gamma-ray bursts. It runs at petascale and is designed for future exascale computers.
Our weeklong program includes two contemporaneous activities: (i) a focused SpEC and SpECTRE code developers meeting and (ii) a SpECTRE workshop. The code developers' meeting will bring together researchers who are actively developing these codebases. The SpECTRE workshop aims to provide graduate students, postdocs, and faculty with the tools needed to install, run, and contribute to the open-source code SpECTRE. Our SpECTRE workshop will cover topics such as the generalized harmonic formulation of the Einstein field equation, general relativistic hydrodynamics, the discontinuous Galerkin method with finite volume sub-cells, the Cauchy characteristic extraction method, installing, running, and visualizing numerical simulations, and how to get involved with code development.
SpECTRE Workshop Group Leaders: Nils Deppe, Scott Field, Larry Kidder, Geoffrey Lovelace, Kyle Nelli, Leo Stein, Vijay Varma, Nils Vu
Gravitational wave science requires high-fidelity numerical simulations of the expected merger events. The Simulating eXtreme Spacetimes (SXS) collaboration has managed the development of two distinct codes for this purpose: (i) the Spectral Einstein Code (SpEC) based on pseudospectral methods, and (ii) an open-source code SpECTRE, an hp-adaptive discontinuous Galerkin scheme that also includes a sub-cell finite volume scheme in regions of strong shock formation that is ideally suited for multi-scale, multi-physics problems. SpECTRE targets problems in multi-messenger astrophysics, including neutron star mergers, core-collapse supernovae, and gamma-ray bursts. It runs at petascale and is designed for future exascale computers.
Our weeklong program includes two contemporaneous activities: (i) a focused SpEC and SpECTRE code developers meeting and (ii) a SpECTRE workshop. The code developers' meeting will bring together researchers who are actively developing these codebases. The SpECTRE workshop aims to provide graduate students, postdocs, and faculty with the tools needed to install, run, and contribute to the open-source code SpECTRE. Our SpECTRE workshop will cover topics such as the generalized harmonic formulation of the Einstein field equation, general relativistic hydrodynamics, the discontinuous Galerkin method with finite volume sub-cells, the Cauchy characteristic extraction method, installing, running, and visualizing numerical simulations, and how to get involved with code development.
SpECTRE Workshop Group Leaders: Nils Deppe, Scott Field, Larry Kidder, Geoffrey Lovelace, Kyle Nelli, Leo Stein, Vijay Varma, Nils Vu
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Workshop Schedule
Monday, August 05, 2024
8:30 - 8:50 AM EDT
Check In
11th Floor Collaborative Space
8:50 - 9:00 AM EDT
Welcome
11th Floor Lecture Hall
Brendan Hassett, ICERM/Brown University
9:00 - 9:45 AM EDT
Introduction to compact binary physics and astrophysics
11th Floor Lecture Hall
Katerina Chatziioannou, Caltech
9:45 - 10:30 AM EDT
SpECTRE overview
Program Overview - 11th Floor Lecture Hall
Nils Deppe, Cornell University
10:30 - 11:00 AM EDT
Coffee Break
11th Floor Collaborative Space
11:00 AM - 12:00 PM EDT
Hands-on: SpECTRE setup and technology check
Tutorial - 11th Floor Lecture Hall
Project Leader
Scott Field, University of Massachusetts Dartmouth
Project Leader
Geoffrey Lovelace, California State University Fullerton
Project Leader
Kyle Nelli, Caltech
Project Leader
Nils Vu, California Institute of Technology
11:00 AM - 12:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
12:30 - 2:00 PM EDT
Lunch/Free Time
2:00 - 3:30 PM EDT
Hands-on: Starting a binary black hole simulation
Tutorial - 11th Floor Lecture Hall
Project Leader
Kyle Nelli, Caltech
Project Leader
Nils Vu, California Institute of Technology
2:00 - 3:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
3:30 - 4:00 PM EDT
Coffee Break
11th Floor Collaborative Space
4:00 - 5:00 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
4:00 - 5:00 PM EDT
Hands-on: Working with simulation datasets
Tutorial - 11th Floor Lecture Hall
Project Leader
Kyle Nelli, Caltech
Project Leader
Nils Vu, California Institute of Technology
5:00 - 6:30 PM EDT
Reception
11th Floor Collaborative Space
Tuesday, August 06, 2024
9:00 - 10:30 AM EDT
Introduction to Discontinuous Galerkin Methods
Seminar - 11th Floor Lecture Hall
Nils Deppe, Cornell University
Lawrence Kidder, Cornell University
Harald Pfeiffer, Albert-Einstein-Institute, Potsdam, Germany
10:30 - 11:00 AM EDT
Coffee Break
11th Floor Collaborative Space
11:00 AM - 12:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
11:00 AM - 12:00 PM EDT
Hands-on: hp-refinement and parallelism in action
Tutorial - 11th Floor Lecture Hall
Project Leader
Nils Deppe, Cornell University
Project Leader
Lawrence Kidder, Cornell University
12:30 - 2:00 PM EDT
Lunch/Free Time
2:00 - 3:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
2:00 - 3:30 PM EDT
Introduction to general relativistic hydrodynamics
Seminar - 11th Floor Lecture Hall
Elias Most, California Institute of Technology
3:30 - 4:00 PM EDT
Coffee Break
11th Floor Collaborative Space
4:00 - 5:00 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
4:00 - 5:00 PM EDT
Hands-on: Discontinuous Galerkin + Finite difference subcell methods
Tutorial - 11th Floor Lecture Hall
Project Leader
Nils Deppe, Cornell University
5:00 - 7:00 PM EDT
Lightning Talks
10th Floor Collaborative Space
Session Chair
Marceline Bonilla, Cal State Fullerton
Wednesday, August 07, 2024
9:00 - 10:30 AM EDT
Introduction to Cauchy Characteristic Evolution
Seminar - 11th Floor Lecture Hall
Project Leader
Keefe Mitman, California Institute of Technology
10:30 - 11:00 AM EDT
Coffee Break
11th Floor Collaborative Space
11:00 AM - 12:25 PM EDT
Hands-on: Cauchy Characteristic Evolution
Tutorial - 11th Floor Lecture Hall
Project Leader
Keefe Mitman, California Institute of Technology
Project Leader
Kyle Nelli, Caltech
11:00 AM - 12:25 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
12:25 - 12:30 PM EDT
Group Photo (Immediately After Talk)
11th Floor Lecture Hall
12:30 - 2:00 PM EDT
Group Lunch - Panel: Careers in Industry
Panel Discussion - 11th Floor Lecture Hall
Panelist
Andy Bohn, Cornell University
Panelist
Sydney Chamberlin, The Nature Conservancy
Panelist
Rutger van Haasteren, Max-Planck-Gesellschaft
Moderator
Vijay Varma, University of Massachusetts, Dartmouth
2:00 - 3:30 PM EDT
Gravitational Waveform Data
Seminar - 11th Floor Lecture Hall
Michael Boyle, Cornell University
Keefe Mitman, California Institute of Technology
3:30 - 4:00 PM EDT
Coffee Break
11th Floor Collaborative Space
4:00 - 5:00 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
4:00 - 5:00 PM EDT
Hands-on: Working with Gravitational Waveform Data
Tutorial - 11th Floor Lecture Hall
Project Leader
Michael Boyle, Cornell University
Project Leader
Lorena Magaña Zertuche, University of Mississippi
Project Leader
Keefe Mitman, California Institute of Technology
Thursday, August 08, 2024
9:00 - 10:30 AM EDT
Task-based parallelism with Charm++
Seminar - 11th Floor Lecture Hall
Geoffrey Lovelace, California State University Fullerton
9:00 - 10:30 AM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
10:30 - 11:00 AM EDT
Coffee Break
11th Floor Collaborative Space
11:00 AM - 12:00 PM EDT
Task-based parallelism
Seminar - 11th Floor Lecture Hall
Kyle Nelli, Caltech
11:00 AM - 12:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
12:30 - 2:00 PM EDT
Lunch/Free Time
2:00 - 3:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
2:00 - 3:30 PM EDT
Writing a SpECTRE executable
Tutorial - 11th Floor Lecture Hall
3:30 - 4:00 PM EDT
Coffee Break
11th Floor Collaborative Space
4:00 - 5:00 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
4:00 - 5:00 PM EDT
Writing a SpECTRE executable
Tutorial - 11th Floor Lecture Hall
Project Leader
Nils Deppe, Cornell University
Project Leader
Lawrence Kidder, Cornell University
Project Leader
Geoffrey Lovelace, California State University Fullerton
Project Leader
Kyle Nelli, Caltech
Project Leader
William Throwe, Cornell University
Project Leader
Nils Vu, California Institute of Technology
5:00 - 7:00 PM EDT
Lightning Talks
10th Floor Collaborative Space
Session Chair
Michael Pajkos, Michigan State University
Friday, August 09, 2024
9:00 - 10:30 AM EDT
Initial data: theory, elliptic solver methods, Beyond GR data, interfacing with other codes
Seminar - 11th Floor Lecture Hall
Peter James Nee, Max Plank Institute for Gravitational Physics (Albert Einstein Institute)
Harald Pfeiffer, Albert-Einstein-Institute, Potsdam, Germany
Nils Vu, California Institute of Technology
10:30 - 11:00 AM EDT
Coffee Break
11th Floor Collaborative Space
11:00 AM - 12:30 PM EDT
SpEC and SpECTRE code developers meeting - Open Discussions
Meeting - 11th Floor Conference Room
11:00 AM - 12:30 PM EDT
Hands-on: Initial data
Tutorial - 11th Floor Lecture Hall
Project Leader
Peter James Nee, Max Plank Institute for Gravitational Physics (Albert Einstein Institute)
Project Leader
Nils Vu, California Institute of Technology
12:30 - 2:00 PM EDT
Lunch/Free Time
2:00 - 2:30 PM EDT
Publication policies Q&A
Other - 11th Floor Lecture Hall
2:30 - 3:30 PM EDT
SpECTRE Roadmap
Closing Remarks - 11th Floor Lecture Hall
3:30 - 4:00 PM EDT
Coffee Break
11th Floor Collaborative Space
Projects
SpECTRE Community Workshop
Group Leaders TBA
The open-source code SpECTRE is a relativistic astrophysics code for simulating neutron star mergers, core-collapse supernovae, and gamma-ray bursts. Our SpECTRE workshop aims to provide graduate students, postdocs, and faculty with the tools to install, run, and contribute to the open-source code SpECTRE. Our SpECTRE workshop will include both lectures and hand-on sessions. Lecture topics will include the generalized harmonic formulation of the Einstein field equation, general relativistic hydrodynamics, the discontinuous Galerkin method with finite volume sub-cells, and the Cauchy characteristic extraction method. There will also be ample opportunity for students and postdocs to interact with senior participants and lecturers of the ICERM workshop program.
As part of your application to the SpECTRE summer school, please briefly answer the following questions in your personal statement:
1. How does your research involve numerical relativity and/or relativistic astrophysics?
2. Do you have experience in computational physics and/or numerical relativity? Which, if any, numerical relativity codebases have you interacted with? (Note that previous experience is not required to attend the workshop.)
As part of your application to the SpECTRE summer school, please briefly answer the following questions in your personal statement:
1. How does your research involve numerical relativity and/or relativistic astrophysics?
2. Do you have experience in computational physics and/or numerical relativity? Which, if any, numerical relativity codebases have you interacted with? (Note that previous experience is not required to attend the workshop.)
SXS developer meeting
Group Leaders TBA
The Simulating eXtreme Spacetimes (SXS) collaboration has overseen the development of two distinct codes — namely, the Spectral Einstein Code (SpEC) and SpECTRE — alongside the development of public simulation datasets and accompanying software for data interaction. Our upcoming in-person developers' workshop will serve as a focused forum for these codes as well as welcoming other researchers eager to contribute to these projects.
To apply for participation in the developer's meeting, please address the following questions in your personal statement:
1. Share your prior experience in developing SpEC, SpECTRE, or codes/datasets derived from simulation outputs. If you lack prior exposure to these codes, please highlight your experience with other computational relativity codes.
2. Identify the development tasks that most pique your interest for discussion or collaboration during this meeting.
To apply for participation in the developer's meeting, please address the following questions in your personal statement:
1. Share your prior experience in developing SpEC, SpECTRE, or codes/datasets derived from simulation outputs. If you lack prior exposure to these codes, please highlight your experience with other computational relativity codes.
2. Identify the development tasks that most pique your interest for discussion or collaboration during this meeting.