computer science

HITAC S-3000

HITAC S-3000 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 HITAC S-3000 rather than just read about it. In short: The HITAC S-3000 is a former family of vector supercomputers, which was developed, manufactured and marketed by Hitachi. Announced in April 1992, the family succeeded the HITAC S-820.

Key takeaways

HITAC S-3000 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 HITAC S-3000 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of HITAC S-3000 from memory before moving on to harder problems.

Reference excerpt

The HITAC S-3000 is a former family of vector supercomputers, which was developed, manufactured and marketed by Hitachi. Announced in April 1992, the family succeeded the HITAC S-820. The S-3000 family comprised the low-end and mid-range S-3600 models and the high-end S-3800 models. Unlike Hitachi's previous generations of supercomputers, the S-3000 family was marketed outside Japan. The S-3600 was an improved version of the S-820 implemented in more modern semiconductor technology. The S-3800 was a new design, differing significantly from the previous generations. It was a parallel vector processor and supported one to four vector processors. In 1994, the S-3000 family was complemented by an MPP machine that used superscalar microprocessors, the SR2001. Hitachi eventually discontinued development of vector supercomputers in favor of this approach. The S-3000 family was replaced in 2000 by the SR8000, making it the last vector supercomputer from Hitachi. The CPU architecture of HITACHI S-3800 Series was based on IBM System/370, and compatible with Hitachi's mainframe systems. It supported two operating systems: OSF/1 Unix and Hitachi's own VOS3 (a fork of IBM MVS).

See also HITAC S-810 HITAC S-820 Hitachi SR2201 Hitachi SR8000 Supercomputing in Japan

References

Worked examples

Example 1 — a first encounter with HITAC S-3000

Start with the simplest possible case. Write down what HITAC S-3000 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 HITAC S-3000 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 HITAC S-3000 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 HITAC S-3000

In research: HITAC S-3000 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 HITAC S-3000 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: HITAC S-3000 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer hardware stubs, Hitachi supercomputers, Mainframe computers, so understanding it makes those chapters shorter.
In everyday life: Look for HITAC S-3000 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 HITAC S-3000 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what HITAC S-3000 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 HITAC S-3000 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HITAC S-3000 in simple terms?

The HITAC S-3000 is a former family of vector supercomputers, which was developed, manufactured and marketed by Hitachi. Announced in April 1992, the family succeeded the HITAC S-820.

Why does HITAC S-3000 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 HITAC S-3000?

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 HITAC S-3000.