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A decade of discovery

The Texas Advanced Computing Center marks 10 years of helping scientists explore phenomenon too large, small or expensive to investigate in the lab.

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On June 1, 2001, the newly reorganized Texas Advanced Computing Center (TACC) officially began supporting computational researchers at The University of Texas at Austin and throughout the national academic community.

Now home to some of the most powerful and recognized supercomputers in the open science community, TACC began 10 years ago by building from a predecessor organization, and by inheriting a dozen employees, a space on the J.J. Pickle Research Campus and a small 88-processor, liquid-cooled Cray T3E, the original Lonestar system.

Lonestar 4

Lonestar 4 ranks among the most powerful academic supercomputers in the world with 302 teraflops peak performance, 44.3 terabytes total memory and 1.2 petabytes raw disk.Photo: © 2011 Brian Birzer

From these humble beginnings, TACC began a rapid ascent to become one of the leading supercomputing centers in the world. Born from the shared vision of leadership at the university and TACC’s director, Jay Boisseau, TACC has become an epicenter for research that advances science and society through the application of advanced computing technologies.

“The University of Texas, situated in Austin, presented a tremendous opportunity to build a world-class advanced computing center that supported outstanding science not just at UT, but across the nation,” Boisseau said. “The quality of the university, the depth of the talent pool, the high profile of the university and the city, and the small, but dedicated staff that were already on hand, presented the elements for a new plan, a new center, and laid the foundation for what we’ve accomplished thus far.”

Over the past decade, TACC’s expert staff and systems have supported important scientific work, from emergency simulations of the Gulf oil spill, which helped the Coast Guard protect property and wildlife, to the first models of the H1N1 virus, which enabled scientists to understand the virus’s potential resistance to antiviral medication, to the clearest picture yet of how the early universe formed. In addition, TACC helped predict the storm surge from Hurricane Ike, delivered geospatial support during the Haiti disaster and is providing emergency computing resources to Japanese researchers who are unable to access their own systems in the wake of the earthquake and tsunami.

Lonestar 4

Deployed in February 2011, Lonestar 4 is TACC’s newest supercomputer and the third largest system on the NSF TeraGrid. Photo: © 2011 Brian Birzer

The center has deployed increasingly powerful computing systems, which have enabled important scientific accomplishments. These include three systems that debuted in the top 30 “most powerful in the world” on the Top 500 list for open science: Lonestar 2 (#26 in 2003); Lonestar 3 (#12 in 2006) and Ranger (#4 in 2008). At $59 million, the Ranger award also represented the largest single grant to The University of Texas at Austin from the National Science Foundation (NSF).

TACC also operates the world’s highest-resolution tiled display (2008: Stallion), and the largest remote and collaborative interactive visualization cluster (2010: Longhorn).

A History of Computation

TACC did not emerge in a vacuum. The university had operated supercomputers through a variety of institutes and centers since 1986, including the UT System Center for High Performance Computing, the UT Austin High Performance Computing Facility and the UT Austin Advanced Computing Center for Engineering and Science (ACCES).

Prior to the formation of TACC, the staffing and systems for advanced computing was at an all-time low on campus. An external review board had reported to university leadership in 1999 that if it wanted to sustain and extend leadership in research in the 21st century, the university needed to develop its computational capacity. As a first step, Vice President for Research Juan Sanchez hired Boisseau, who got his Ph.D. from the university and who had previously worked at the San Diego Supercomputing Center and the Arctic Region Supercomputing Center, to lead the effort. Boisseau rapidly set about expanding the core team inherited from ACCES, and recruiting additional talented staff to broaden TACC’s technology scope and to help realize his vision.

Jay Boisseau, Karl Schulz Tommy Minyard stand in front of Ranger

“Ranger” Principal Investigator (PI) Jay Boisseau and Co-PIs Karl Schulz, Tommy Minyard and Omar Ghattas (not pictured) brought the 579.4 teraflop supercomputer to The University of Texas at Austin where it helps the nation’s top scientists address some of the world’s most challenging problems.Photo: Christina Murrey

“TACC grew from a vision to the reality it is today thanks to the strong commitment of The University of Texas at Austin to become a leading player in advanced computing, and the dedication, focus and expertise of its director, Dr. Boisseau and his outstanding staff,” said Sanchez.

Leveraging top-tier research faculty at the university, local technology partners like Dell Inc. and funding from the NSF, TACC developed rapidly from a small center to a leading provider of computational resources nationwide. TACC has nearly 100 staff members and continues to expand.

As TACC resources grew in capability and the center hired additional staff, bringing great expertise, the center’s position in the high-performance computing community grew as well. In 2002, the High Performance Computing Across Texas (HiPCAT) consortium was formally established by researchers at Rice University, Texas AandM, Texas Tech, University of Houston, and UT Austin, with Boisseau as the first director. In 2004, TACC was selected to join the NSF TeraGrid, the world’s largest distributed infrastructure for open scientific research.

In 2007, TACC began providing resources on Lonestar 3 to other UT System institutions, a role that has now grown in scale with Lonestar 4 and with the UT Research Cyberinfrastructure project. In 2009, the NSF awarded a $7 million grant to TACC to provide a new computing resource (Longhorn) and the largest, most comprehensive suite of visualization and data analysis services to the open science community. And in 2010, TACC was selected as one of four U.S. advanced computing centers to receive $8.9 million for the eXtreme Digital (XD) Technology Insertion Service (TIS) award to evaluate and recommend new technologies as part of the NSF TeraGrid and its follow-on initiative.

Lonestar 4

The particles in the visualization represent portions of the oil spill and their position is either hypothetical or reflect the observed position of the oil on the surface. The data is visualized using Longhorn and MINERVA, which is an open source geospatial software.Credits: Univ. North Carolina at Chapel Hill, Institute of Marine Sciences; Univ. Notre Dame, Computational Hydraulics Laboratory; Univ. Texas, Computational Hydraulics Group, ICES; Univ. Texas, Center for Space Research; Univ. Texas, Texas Advanced Computing Center; Seahorse Coastal Consulting

In February 2011, TACC deployed a powerful new supercomputer, Lonestar 4, for the national scientific community. The center also received word in May that the National Science Board had approved $121 million for the follow-on to the NSF TeraGrid, known as Extreme Science and Engineering Discovery Environment (XSEDE), in which TACC will play a leading role.

Virtual Laboratories

The emergence of TACC as a world-class supercomputing center has arisen in the context of computational science becoming the third method of investigation, which, in conjunction with theory and experimentation, is driving advances in all fields of research. The resources that TACC deploys enable scientists to explore phenomenon too large (that is, black holes), small (quarks), dangerous (explosions) or expensive (drug discovery) to investigate in the laboratory.

High-performance computing is also used to predict the outcome of complex natural phenomena. This is the case for Clint Dawson, one of the leaders in forecasting storm surges associated with tropical storms.


  • Over the past decade, TACC’s expert staff and systems have supported important scientific work, from emergency simulations of the Gulf oil spill to the clearest picture yet of how the early universe formed.
  • TACC supports more than 1,000 projects and several thousand researchers each year on its advanced computing systems.

“We rely on our partnership with TACC because, without them, we wouldn’t be able to do real-time forecasting of extreme weather events,” said Dawson, head of the Computational Hydraulics Group housed in the Institute for Computational Engineering and Sciences (ICES) at UT Austin, and a longtime user of the center’s systems.

This sentiment is shared by nearly all of the scientists and engineers who use TACC’s systems. The majority of computational cycles are allocated by the NSF to the most promising computational science research; some cycles are reserved for researchers at Texas institutions of higher learning, including community colleges and minority-serving institutions. As much as a new telescope or electron microscope drives discoveries in astronomy or biology, advanced computing systems allow for new kinds of investigations that push knowledge forward across all scientific disciplines.

“We wouldn’t be able to do anything without TACC,” said Mikhail Matz, a professor of integrative biology at UT Austin who combines the power of supercomputers with next-generation gene sequencers. “We can generate massive amounts of genetic sequences, but then what? The main challenge here is to figure out the most appropriate and effective way of dealing with this huge amount of data, and extracting the information you want. To do that, we need very powerful computers.”

More Than Just Machines

TACC is more than the host of powerful computing systems. It is also home to an inimitable group of technologists who are instrumental in accelerating science, often by working directly with researchers to make sure their codes run quickly and effectively.

“In order to do these large-scale science runs, it’s a big team effort,” said Philip Maechling, information architect for the Southern California Earthquake Center, who uses Ranger to simulate earthquakes and predict their impact on structures in the Los Angeles basin. “You need the help of a lot of people on our end, but also the help of the staff at TACC in order to get all the pieces to come together.”

Working with Maechling’s team, TACC has helped advance earthquake science and contributed to the development of updated seismic hazard estimates and improved building codes for California.

For users like Dawson, Matz and Maechling, access to TACC’s Ranger supercomputer and other systems means faster time-to-solution, higher-resolution models, more accurate predictions and the ability to do transformative science with the potential for social impact.

“We’ve made our systems reliable, high performance and scalable, and we’ve provided great user support,” said Boisseau. “Our systems are constantly in demand often far in excess of what we can even provide because we’ve established a reputation for making TACC a great environment for scientific research.”

TACC supports more than 1,000 projects and several thousand researchers each year on its diverse systems.

Attend TACC’s 10th Anniversary Celebration

On Friday, June 24, TACC will commemorate its 10th anniversary with a half-day celebration and colloquium event on the J.J. Pickle Research Campus. The event will bring together experts in the high-performance computing community, top scientific researchers who use TACC’s resources and leadership from the center to discuss the past, present and future of advanced computing, and the ways in which high-performance computing is advancing science and society.

Find a full description and calendar of events online.

Connect with the Texas Advanced Computing Center