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National Center for Supercomputing Applications

National Center for Supercomputing Applications is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand National Center for Supercomputing Applications rather than just read about it. In short: The National Center for Supercomputing Applications (NCSA) is a unit of the University of Illinois Urbana-Champaign, and provides high-performance computing resources to researchers in the United States. NCSA is currently led by Professor Rayadurgam Srikant.

National Center for Supercomputing Applications — main illustration
National Center for Supercomputing Applications — illustration

Key takeaways

  • National Center for Supercomputing Applications belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect National Center for Supercomputing Applications to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of National Center for Supercomputing Applications from memory before moving on to harder problems.

Reference excerpt

The National Center for Supercomputing Applications (NCSA) is a unit of the University of Illinois Urbana-Champaign, and provides high-performance computing resources to researchers in the United States. NCSA is currently led by Professor Rayadurgam Srikant.

History NCSA is one of the five original centers in the National Science Foundation's Supercomputer Centers Program. The idea for NCSA and the four other supercomputer centers arose from the frustration of its founder, Larry Smarr, who wrote an influential paper, "The Supercomputer Famine in American Universities", in 1982, after having to travel to Europe in summertime to access supercomputers and conduct his research. Smarr wrote a proposal to address the future needs of scientific research. Seven other University of Illinois professors joined as co-principal investigators, and many others provided descriptions of what could be accomplished if the proposal were accepted. Known as the Black Proposal (after the color of its cover), it was submitted to the NSF in 1983. It met the NSF's mandate and its contents immediately generated excitement. However, the NSF had no organization in place to support it, and the proposal itself did not contain a clearly defined home for its implementation. The NSF established an Office of Scientific Computing in 1984 and, with strong congressional support, it announced a national competition that would fund a set of supercomputer centers like the one described in the Black Proposal. The result was that four supercomputer centers would be chartered (Cornell, Illinois, Princeton, and San Diego), with a fifth (Pittsburgh) added later. The Black Proposal was approved in 1985 and marked the foundation of NCSA, with $42,751,000 in funding from 1 January 1985 through 31 December 1989. This was also noteworthy in that the NSF's action of approving an unsolicited proposal was unprecedented. NCSA opened its doors in January 1986. In 2007, NCSA was awarded a grant from the National Science Foundation to build "Blue Waters", a supercomputer capable of performing quadrillions of calculations per second, a level of performance known as petascale.

Black Proposal

The 'Black Proposal' was a short, ten-page proposal for the creation of a supercomputing center that eventually led to funding from the National Science Foundation (NSF) to create supercomputing centers, including the National Center for Supercomputing Applications (NCSA) at the University of Illinois. In this sense, the significant role played by the U.S. Government in funding the center, and the first widely popular web browser (NCSA's Mosaic), cannot be denied. The Black Proposal described the limitations on any scientific research that required computer capabilities, and it described a future world of productive scientific collaboration, centered on universal computer access, in which technical limitations on scientific research would not exist. Significantly, it expressed a clear vision of how to get from the present to the future. The proposal was titled "A Center for Scientific and Engineering Supercomputing", and was ten pages long. The proposal's vision of the computing future were then unusual or non-existent, but elements of it are now commonplace, such as visualization, workstations, high-speed I/O, data storage, software engineering, and close collaboration with the multi-disciplinary user community. Modern readers of the Black Proposal may gain insight into a world that no longer exists. Today's computers are easy to use, and the web is omnipresent. Employees in high-tech endeavors are given supercomputer accounts simply because they are employees. Computers are universally available and can be used by almost anyone of any age, applicable to almost anything. At the time the proposal was written, computers were available to almost no one. For scientists who needed computers in their research, access was difficult if available at all. The effect on research was crippling. Reading publications from that time gives no hint that scientists were required to learn the arcane technical details of whatever computer facilities were available to them, a time-consuming limitation on their research, and an exceedingly tedious distraction from their professional interests. The implementation of the Black Proposal had a primary role in shaping the computer technology of today, and its impact on research (both scientific and otherwise) has been profound. The proposal's description of the leading edge of scientific research may be sobering, and the limitations on computer usage at major universities may be surprising. A comprehensive list of the world's supercomputers shows the best resources that were then available. The thrust of the proposal may seem obvious now, but was then novel. The National Science Foundation announced funding for the supercomputer centers in 1985; The first supercomputer at NCSA came online in January 1986. NCSA quickly came to the attention of the worldwide scientific community with the release of NCSA Telnet in 1986. A number of other tools followed, and like NCSA Telnet, all were made available to everyone at no cost. In 1993, NCSA released the Mosaic web browser, the first popular graphical Web browser, which played an important part in expanding the growth of the World Wide Web. NCSA Mosaic was written by Marc Andreessen and Eric Bina, who went on to develop the Netscape Web browser. Mosaic was later licensed to Spyglass, Inc. which provided the foundation for Internet Explorer. The server-complement was called NCSA HTTPd, which later became known as Apache HTTP Server. Other notable contributions by NCSA were the black hole simulations supporting the development of LIGO in 1992, the tracking of Comet Hale–Bopp in 1997, the creation of a PlayStation 2 Cluster in 2003, and the monitoring of the COVID-19 pandemic and creation of a COVID-19 vaccine.

Facilities Initially, NCSA's administrative offices were in the Water Resources Building and employees were scattered across the campus. NCSA is now headquartered within its own building directly north of the Siebel Center for Computer Science, on the site of a former baseball field, Illini Field. NCSA's supercomputers are at the National Petascale Computing Facility. The latest supercomputing system at NCSA today is the DeltaAI, funded by the National Science Foundation.

… excerpt ends here. Continue reading the full article.

Illustrations

National Center for Supercomputing Applications illustration
National Center for Supercomputing Applications illustration
National Center for Supercomputing Applications illustration

Worked examples

Example 1 — a first encounter with National Center for Supercomputing Applications

Start with the simplest possible case. Write down what National Center for Supercomputing Applications claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to National Center for Supercomputing Applications before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about National Center for Supercomputing Applications ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of National Center for Supercomputing Applications

In research
National Center for Supercomputing Applications appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses National Center for Supercomputing Applications in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
National Center for Supercomputing Applications is common in secondary-school and first-year university syllabi. It links to neighbouring topics American organizations established in 1986, Computer science institutes in the United States, Cyberinfrastructure, so understanding it makes those chapters shorter.
In everyday life
Look for National Center for Supercomputing Applications outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study National Center for Supercomputing Applications in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what National Center for Supercomputing Applications means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain National Center for Supercomputing Applications out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is National Center for Supercomputing Applications in simple terms?

The National Center for Supercomputing Applications (NCSA) is a unit of the University of Illinois Urbana-Champaign, and provides high-performance computing resources to researchers in the United States. NCSA is currently led by Professor Rayadurgam Srikant.

Why does National Center for Supercomputing Applications matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study National Center for Supercomputing Applications?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on National Center for Supercomputing Applications.

Tags

  • American organizations established in 1986
  • Computer science institutes in the United States
  • Cyberinfrastructure
  • E-Science
  • History of the Internet
  • National Science Foundation
  • Research institutes established in 1986
  • Supercomputer sites
  • University of Illinois Urbana-Champaign buildings and structures
  • University of Illinois Urbana-Champaign centers and institutes

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