computer science

Tera 100

Tera 100 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 Tera 100 rather than just read about it. In short: Tera 100 is a supercomputer built by Bull SA for the French Commissariat à l'Énergie Atomique. On May 26, 2010, Tera 100 was turned on.

Key takeaways

Tera 100 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 Tera 100 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tera 100 from memory before moving on to harder problems.

Reference excerpt

Tera 100 is a supercomputer built by Bull SA for the French Commissariat à l'Énergie Atomique. On May 26, 2010, Tera 100 was turned on. The computer, which is located in Essonne is able to sustain around 1 petaFLOPs maximum performance and a peak at 1.25 petaFLOPs. It has 4300 Bullx Series S servers ('Mesca'), 140,000 Intel Xeon 7500 processor cores, and 300 TB of memory. The Interconnect is QDR InfiniBand. The file system has a throughput of 500 GB/s and total storage of 20 PB. It uses the SLURM resource manager for scheduling batch jobs. Tera 100 uses Bull XBAS Linux, a partly Red Hat Enterprise Linux derivative. In June 2011, TOP500 deemed it the ninth fastest supercomputer in the world, and in 2020, it had dropped off the list.

See also Computer science Computing Tera-10

References

External links CEA HPC site

Worked examples

Example 1 — a first encounter with Tera 100

Start with the simplest possible case. Write down what Tera 100 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 Tera 100 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 Tera 100 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 Tera 100

In research: Tera 100 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 Tera 100 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: Tera 100 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer hardware stubs, Petascale computers, Supercomputing in Europe, so understanding it makes those chapters shorter.
In everyday life: Look for Tera 100 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 Tera 100 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tera 100 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tera 100 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tera 100 in simple terms?

Tera 100 is a supercomputer built by Bull SA for the French Commissariat à l'Énergie Atomique. On May 26, 2010, Tera 100 was turned on.

Why does Tera 100 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 Tera 100?

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 Tera 100.