NDSU Researcher Uses Supercomputing Power to Study the Sun
March 16, 2012 – Fargo, N.D. – Researcher Cherish Bauer-Reich wants to look inside the sun. More accurately, she wants to simulate the sun to study plasma flows associated with sunspot cycles. The cycles play a role in solar storms, which can affect satellites and disrupt a host of modern communication technologies, from cell phones to power grids.
Scientists recently warned about a series of solar storms in early March, concerned that it could affect global positioning systems, power grids, satellites and airplane travel. With the sun’s normal 11-year cycle, these very active solar storms are expected to continue.
Bauer-Reich, a research engineer at NDSU’s Center for Nanoscale Science and Engineering, is pursuing her doctorate degree in geophysics. She’s using supercomputing power to create a model of the sun. “I need something that has a lot of computing power. Basically, when you’re running these, you break the sun down into a big grid. And you have to compute all these variables at each node of the grid. When you’re dealing with tens of thousands of grid points, you need a lot of computing.”
The Center for Computationally Assisted Science and Technology (CCAST) at NDSU provides the power for Bauer-Reich’s research. She looked at computing centers in Minnesota and Arizona to do the work, but found that CCAST in Fargo provided an easily accessible route to the supercomputing needed.
“I wasn’t surprised that the university has a facility like this. I was actually more surprised at how easy it was to get in and work with them,” says Bauer-Reich. “When I’ve talked with people that work with supercomputing, and I know some who are starting to go to places like China, because it’s hard to get in to a lot of the supercomputing facilities in the U.S., either there’s no time available, or it’s really expensive.”
NDSU’s supercomputing center (CCAST) is available to students, faculty and staff researchers, and available for researchers and industry that are partnering with NDSU. With secure facilities in NDSU’s Research and Technology Park, CCAST provides 13 TFLOPS (trillion Floating Point Operations Per Second) of peak theoretical computational performance to excel in today’s competitive research arena.
“I could not do anything on my dissertation without having access to a computing center like this,” says Bauer-Reich. “It would be a showstopper if I didn’t have it because the emphasis is on the computational model.”
While people have heard of sunspots, most aren’t aware of what actually causes them. “ It’s a big tube of magnetic flux basically,” says Bauer-Reich. “These things pop out of the top of the convection zone and then they pop back in. And where they pop back out and pop back in, they reduce the amount of heat and the amount of light coming out of the sun, which is why they look dark. It’s because they’re at different temperatures than the rest of the area around them,” she explains.
Sunspots tend to work in cycles, starting at high latitudes and then migrating toward the equator. “Helioseismologists study vibrations in the sun and they image what’s underneath the outer layer. What they’ve found is that when these sunspots are popping up, there’s also a flow right next to them, so that the plasma is flowing at a different speed than on either side of them. What I’m trying to study is how strong that flow has to be,” says Bauer-Reich. “These things can only be studied using computers because we can’t really look inside the sun or go take measurements of the sun. So the only way to do it is to come up with these models that try to predict behavior.”
Bauer-Reich expects running all the computer models on CCAST will take approximately a year, followed by the analysis of the data.
A native of Minot, N.D., who grew up in Bismarck and Fargo, Bauer-Reich earned her undergraduate degree in physics from NDSU and her master’s degree in electrical engineering from NDSU. The availability of the supercomputing facilities at NDSU means she can be with her husband and children while completing her dissertation, rather than traveling much of the time. “It’s nice that I was able to come back here and do research and have access to this computing.”
More than 180 researchers engage in more than 50 projects using CCAST facilities at NDSU, according to Martin Ossowski, CCAST director. Projects include: renewable energy, multiprocessor electronic circuitry, modeling of atmospheric plasma, ways to monitor the health of bridges and vehicles, computational biology, tissue engineering, human bone modeling, and agroinformatics.
Ossowski says today’s supercomputing environment emphasizes not just speed, but the ability to help researchers tailor software to conduct their research, as well as meeting researchers’ data lifecycle needs. In addition, CCAST at NDSU serves as an on-ramp for researchers to access even larger computational highways. For example, CCAST helps researchers access national resources such as XSEDE (National Science Foundation Extreme Science and Engineering Discovery Environment) and INCITE (U.S. Department of Energy Innovative and Novel Computational Impact on Theory and Experiment), and OSG (cross-agency Open Science Grid).
“We assist researchers who are pursuing discovery in energy, materials, environment, genomics, health, and in other areas of national research priority,” said Ossowski. “We have faculty on campus who are also accessing national supercomputing centers in their research.” Transmitting data across national networks or using cloud high performance computing can be costly or in some cases even impractical, so substantial high performance computing resources are available at NDSU as well. CCAST provides high performance computing infrastructure for the NDSU Campus, the Research and Technology Park, and their industrial partners, as well as engages in its own original research.
NDSU’s Vice President for Research, Dr. Philip Boudjouk, says computer modeling represents the wave of the present and the future in science. “Such modeling can save money before even conducting lab experiments. All the data then has to be analyzed. Computers and data storage facilities can help make the data permanently useful to scientists for future research.”
Supercomputing is as important to business as it is to scientific researchers. In a white paper titled “Global Leadership Through Modeling and Simulation,” the U.S. Council on Competitiveness says “to out-compete is to out-compute.” For example, Boeing used a national supercomputing center to accelerate design of the 787 and 747-8 airliners and Navistar Corp. designed technologies for better fuel efficiency in trucks.
From her standpoint, researcher Cherish Bauer-Reich appreciates access to supercomputing available at NDSU CCAST. “I do think it’s really cool that I get to be here to do my research.”