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PRESENTATIONS

This page contains talks and posters I have presented at conferences as well as for school projects. This material is (sometimes) not published elsewhere, so I thought I would post them here in case they are of interest or use for other researchers/students.

[2023] [2022] [2021] [2020] [2019] [2018] [2017] [2016] [2015]
[2014] [2013] [2011] [2008] [School Reports]

2023

AsHES 23 Recent Updates to the Solar Particle Event Threat Assessment Tool (STAT)
Ronald M. Caplan, Erika Palmerio, Jon A. Linker, Matthew A. Young, and Nathan A. Schwadron
Poster presented at the
54th Meeting of the SPD.
August 13th-18th, 2023. Minneaplois, Minnesota, USA.


AsHES 23 Evaluating a Practical Parabolic Time Step Limit for Unconditionally Stable Schemes
in a Thermodynamic MHD Model
Ronald M. Caplan, Craig D. Johnston, Lars K. S. Daldorff, and Jon A. Linker
Talk presented at the 15th ASTRONUM Conference.
June 25th-29th, 2023. Pasadena, California, USA.


AsHES 23 Acceleration of a production Solar MHD code with Fortran standard parallelism:
From OpenACC to `do concurrent`
Ronald M. Caplan, Miko M. Stuljater, and Jon A. Linker
Talk presented at the 13th AsHES workshop held at the 37th IEEE IPDPS Symposium.
May 15th, 2023. St. Petersburg, Florida, USA.


ISC SCC 23 ISC Student Cluster Competition HPC Application and Task Introduction: POT3D
Ronald M. Caplan.
Talk presented for the ISC Student Cluster Competition.
March 9th, 2023. Online.
The talk can be viewed on YouTube here.

2022

SC2022 Make Your Own Solar Storms!
 Ronald M. Caplan, Tibor Torok, Andres Reyes, and Cooper Downs
Talk presented at the NASA exhibitor booth at
Super Computing (SC) 22. November 13th-18th, 2022. Dallas, Texas, USA.
Click here to view details on the NASA SC22 page.

CSRC2022 Numerical Modeling of Solar Storm Dynamics from the Sun to Earth
 Ronald M. Caplan.
Talk presented at the CSRC Colloquium.
September 23rd, 2022. San Diego State University.

TESS2022 An Open Source Flux Transport Model
 Ronald M. Caplan, James A. Turtle, Jon A. Linker, Lisa Upton, Nick Arge,
Raphael Attie, Cooper Downs, Carl J. Henney, and Nikolai Pogorelov
Poster presented at the 2022
TESS Meeting.
August 8th - August 11th, 2022. Bellevue, Washington, USA.

SHINE2022 Interactive Tool for Modeling Multiple Solar Eruptions from Sun to Earth
 Ronald M. Caplan, Tibor Torok, Cooper Downs, Andres Reyes,
Viacheslav Titov, Roberto Lionello, and Jon A. Linker
Poster presented at the 2022
SHINE Meeting.
June 26th - July 1st, 2022. Honolulu, Hawaii, USA.

NVIDIA2022 Speeding up a banded-matrix solver by 3x using the updated cuSparse library
 Ronald M. Caplan, Miko Stulajter, and Jon A. Linker.
Talk presented at the NVIDIA GPU Technology Conference.
March 21st-24th, 2022. Virtual.
The talk can be viewed here.

2021

AGU2021 Open-Source High-Performance Flux Transport
 Ronald M. Caplan, Lisa Upton, Jon A. Linker, Charles Nick Arge, Raphael Attie,
Cooper Downs and Carl J. Henney
Poster presented at the 2021
Fall meeting of the American Geophysical Union (AGU).
December 13th-17th, 2021. New Orleans, Louisiana, USA.

SC2021 Can Fortran's `do concurrent' Replace Directives for Accelerated Computing?
 Ronald M. Caplan, Miko Stulajter, and Jon A. Linker.
Talk presented at
OpenACC Birds of a Feather at Supercomputing 2021.
November 16th, 2021. St. Louis, Missouri, USA.

NVIDIA2021 Optimizing Stencil Operations in OpenACC
 Ronald M. Caplan, Jon A. Linker, Cooper Downs, Roberto Lionello, Andres Reyes,
Pete Riley, Viacheslav Titov, and Tibor Torok.
Talk presented for
On-Demand NVIDIA Webinar.
January 14th, 2021. Virtual.

2020

AGU2020 Mitigation of Coronal Hole Obscuration for Open Flux Estimates
 Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Poster presented at the 2020
Fall meeting of the American Geophysical Union (AGU).
December 1st-17th, 2020. Virtual.

GTC2020 Optimizing Stencil Operations in OpenACC
 Ronald M. Caplan and Jon A. Linker.
Poster presented at the 2020
NVIDIA GPU Technology Conference.
March 23rd-26th, 2020. Virtual.

2019

AGU2019 Preparing photospheric magnetic field measurements
for use in coronal and heliospheric models
 Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Poster presented at the 2019
Fall meeting of the American Geophysical Union (AGU).
December 9th-13th, 2019. San Francisco, California, USA.

SC2019 SC2019
Teaching Your Legacy Code New (GPU) Tricks
 Ronald M. Caplan and Jon A. Linker
Poster and talk presented at the NASA exhibitor booth at
Super Computing (SC) 19. November 17th-21st, 2019. Denver, Colorado, USA.
Click here to view details on the NASA SC19 page.

SHINE2019 SHINE2019_Qmap
Variations in Finite Difference Potential Fields
Download High-Resolution Q-Map:
[FULL 16000x8000 (121MB)] [HALF 8000x4000 (45MB)] [QUARTER 4000x2000 (14MB)] [SMALL 1600x800 (3MB)]
Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Poster presented at the 2019 SHINE Meeting.
August 5th-9th, 2019. Boulder, Colorado, USA.

GTC2019 Accelerating the Solar Wind with OpenACC
 Ronald M. Caplan, Jon A. Linker, Zoran Mikic, Roberto Lionello, Pete Riley, and Cooper Downs.
Poster presented at the 2019
NVIDIA GPU Technology Conference.
March 18th-21st, 2019. San Jose, California, USA.

2018

AGU2018 Coronal Hole Obscuration and Open Flux
 Ronald M. Caplan, Cooper Downs, Jon A. Linker, and Zoran Mikic.
Poster presented at the 2018
Fall meeting of the American Geophysical Union (AGU).
December 10th-14th, 2018. Washington DC, USA.

SC2018 SC2018
Shields Up! Towards Forecasting Solar Particle Threats Through Simulation
 Ronald M. Caplan, Jon A. Linker, Cooper Downs, Zoran Mikić, Roberto Lionello, Tibor Török, Janvier Wijaya
Poster and talk presented at the NASA exhibitor booth at
Super Computing (SC) 18. November 11th-16th, 2018. Dallas, Texas, USA.
Click here to view details on the NASA SC18 page.

SC2018 GPU-accelerating Established Science Applications with OpenACC:
Experiences, Results, and Development Tips
Ronald M. Caplan, Jon A. Linker, and Zoran Mikic.
Talk presented at the
OpenACC User Group Meeting @ SC18.
November 13th, 2018. Dallas, Texas, USA.

SC2018 Linux Laptop + NVIDIA GPU: Running GPU Codes using Bumblebee
Ronald M. Caplan.
Talk presented at the
OpenACC User Group Meeting @ SC18.
November 13th, 2018. Dallas, Texas, USA.

SHINE2018 Effect of Coronal Hole Obscuration on Open Flux Measurements
 Ronald M. Caplan, Cooper Downs, Jon A. Linker, and Zoran Mikic.
Poster presented at the 2018
SHINE Meeting.
July 30th-August 3rd, 2018. Cocoa Beach, Florida, USA.

ASTRONUM2018 GPU-acceleration of an Established Solar MHD code using OpenACC
 Ronald M. Caplan, Jon A. Linker, Zoran Mikic, Cooper Downs, and Tibor Torok.
Talk given at
ASTRONUM 2018.
June 25th-29th, 2018. Panama City Beach, Florida, USA.

GTC2018 Solar Storm Modeling using OpenACC:
From HPC cluster to “in-house”
Ronald M. Caplan, Jon A. Linker, Cooper Downs, Tibor Török, Zoran Mikić,
Roberto Lionello, Viacheslav Titov, Pete Riley, and Janvier Wijaya.
Talk given at the 2018
NVIDIA GPU Technology Conference.
March 26th-29th, 2018. San Jose, California, USA.
The talk was recorded and can be viewed here.

2017

SC2017 SC2017 SC2017
Totality! Predicting the Corona of the 2017 Great American Solar Eclipse
 Ronald M. Caplan, Zoran Mikić, Cooper Downs, Jon A. Linker, Pete Riley, Roberto Lionello, Tibor Török, Viacheslav Titov, Janvier Wijaya
Poster and talk presented at the NASA exhibitor booth at
Super Computing (SC) 17. November 12th-16th, 2017. Denver, Colorado, USA.
Click here to view details on the NASA SC17 page.
This work was awarded HPCwire's 2017 Readers Choice Award for "Top HPC-Enabled Scientific Achievement".

SPD2017 Using Coronal Hole Maps to Constrain MHD Models
 Ronald M. Caplan, Cooper Downs, Zoran Mikic, and Jon A. Linker.
Poster presented at the
48th meeting of the Solar Physics Division of the American Astronomical Society.
August 21st-25th, 2017. Portland, Oregon, USA.

GTC2017 Potential Field Solutions of the Solar Corona:
Converting a PCG Solver from MPI to MPI+OpenACC
 Ronald M. Caplan, Jon A. Linker, and Zoran Mikic.
Talk given at the 2017
NVIDIA GPU Technology Conference.
May 8th-11th, 2017. San Jose, California, USA.
The talk was recorded and can be viewed here.
Further details were presented at the user-feedback session of the July 24th, 2017 OpenACC Technical Committeee Meeting.
Those slides can be viewed here.

2016

AGU2016 A Free Database of Auto-detected Full-sun Coronal Hole Maps
 Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Poster presented at the 2016
Fall meeting of the American Geophysical Union (AGU).
December 12th-16th, 2016. San Francisco, California, USA.

SPD2017 Advancing parabolic operators in thermodynamic MHD models:
Explicit super time-stepping vs. implicit methods with Krylov solvers
 Ronald M. Caplan, Zoran Mikic, Jon A. Linker, and Roberto Lionello.
Poster presented at
Super Computing (SC) 16.
November 13th-18th, 2016. Salt Lake City, Utah, USA.
The extended two-page abstract can be viewed here

SHINE2016 A freely available 4-yr database of synchronic full-sun EUV and coronal hole maps
 Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Poster presented at the 2016
SHINE Meeting.
July 11th-15th, 2016. Santa Fe, New Mexico, USA.

ASTRONUM2016 Advancing parabolic operators in thermodynamic MHD models:
Explicit super time-stepping versus implicit schemes with Krylov solvers
 Ronald M. Caplan, Zoran Mikic, Jon A. Linker, and Roberto Lionello.
Talk given at
ASTRONUM 2016.
June 6th-10th, 2016. Monterey, California, USA.
Click here to read the conference proceedings paper.

GTC2016 Non-uniform diffusion of the Solar surface magnetic field:
Code acceleration using OpenACC for both GPUs and x86
 Ronald M. Caplan, Cooper Downs, and Zoran Mikic.
Poster presented at the 2016
NVIDIA GPU Technology Conference.
April 4th-7th, 2016. San Jose, California, USA.

2015

AGU2015 Full-sun synchronic EUV and coronal hole mapping using multi-instrument images:
Data and software made available
 Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Talk given at the 2015
Fall meeting of the American Geophysical Union (AGU).
December 14th-18th, 2015. San Francisco, California, USA.

SC2015 SC2015 Unlocking the Secrets of Solar Storms
 Ronald M. Caplan, Cooper Downs, Jon A. Linker, Roberto Lionello, Zoran Mikić, Pete Riley, Viacheslav Titov, Tibor Török
Poster and talk presented at the NASA exhibitor booth at
Super Computing (SC) 15
November 15th-20th, 2015. Austin, Texas, USA.
Click here to view details on the NASA SC15 page.

2014

AGU2014 Automatic Time-Dependent Coronal Hole Maps using Synchronized Multi-instrument EUV Data
 Ronald M. Caplan, Cooper Downs, and Jon A. Linker.
Poster presented at the 2014
Fall meeting of the American Geophysical Union (AGU).
December 15th-19th, 2014. San Francisco, California, USA.

2013

AGU2016 Nonlinear Schrödinger Equation Multidimensional Matlab-based GPU-accelerated Integrators using Compact high-order schemes
 Ronald M. Caplan and Ricardo Carretero.
Poster presented at the 2013
NVIDIA GPU Technology Conference.
March 24th-27th, 2013. San Jose, California, USA.

2011

SIAMPDE2011 NLSEmagic: Nonlinear Schrödinger Equation Multidimensional Matlab-based GPU-accelerated Integrators using Compact High-order Schemes
 Ronald M. Caplan, and Ricardo Carretero.
Talk given at the 2011
SIAM Conference on Analysis of Partial Differential Equations
November 14th-17th, 2011. San Diego, California, USA.

IMACS2011 Vortex Ring Dynamics and interactions in the Nonlinear Schrödinger Equation
 Ronald M. Caplan, and Ricardo Carretero.
Talk given at the 2011
The 7th IMACS International Conference on Nonlinear Evolution Equations and Wave Phenomena: Computation and Theory
April 4th-7th, 2011. Athens, Georgia, USA.

2008

JMM2008 Azimuthal Modulation Stability for Vortices in the Focusing Nonlinear Schrodinger Equation
 Ronald M. Caplan, Ricardo Carretero, Enam Hoq, and Panayotis G. Kevrekidis.
Talk given at the 2008
Joint Mathematics Meeting
January 6th-9th, 2008. San Diego, California, USA.


SCHOOL REPORTS