Parallel computer - Revision history

Jnc: Improve wording

2024-05-13T11:21:33Z

Improve wording

← Older revision		Revision as of 11:21, 13 May 2024
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	A '''parallel computer''' is one which uses a [[parallel]] implementation for operations on larger units of data (e.g. the addition of two numbers). Essentially all computers are now parallel, since [[integrated circuit\|ICs]] have reduced the cost of [[transistor]]s, the usual basic functional unit of modern computers, to essentially nothing, and the ~~inherent~~ disadvantages of serial ~~machines~~ (principally slower speed) make ~~serial computers~~ a bad ~~fundamental~~ approach.		A '''parallel computer''' is one which uses a [[parallel]] implementation for operations on larger units of data (e.g. the addition of two numbers). Essentially all computers are now parallel, since [[integrated circuit\|ICs]] have reduced the cost of [[transistor]]s, the usual basic functional unit of modern computers, to essentially nothing, and the fundamental disadvantages of [[serial computer]]s (principally slower speed) make them inherently a bad approach.

	For example, in a machine which is [[binary]] internally, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.		For example, in a machine which is [[binary]] internally, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.

	[[Serial ~~computer]]s~~ were more common in the early stages of computing ~~than parallel computers~~; they are slower, and have more complex control [[logic]], but seemingly used fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky. In reality, due to their complexity, they were not actually as economical in their use of components as it had been thought they would be; their greater complexity, and slower speed, turned out to be too high a price to pay for their somewhat limited component counts.		Serial computers were more common in the early stages of computing; they are slower, and have more complex control [[logic]], but seemingly used fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky. In reality, due to their complexity, they were not actually as economical in their use of components as it had been thought they would be; their greater complexity, and slower speed, turned out to be too high a price to pay for their somewhat limited component counts.

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Jnc: Clarify that example is for binary machines

2024-05-12T23:08:00Z

Clarify that example is for binary machines

← Older revision		Revision as of 23:08, 12 May 2024
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	A '''parallel computer''' is one which uses a [[parallel]] implementation for operations on larger units of data (e.g. the addition of two numbers). Essentially all computers are now parallel, since [[integrated circuit\|ICs]] have reduced the cost of [[transistor]]s, the usual basic functional unit of modern computers, to essentially nothing.		A '''parallel computer''' is one which uses a [[parallel]] implementation for operations on larger units of data (e.g. the addition of two numbers). Essentially all computers are now parallel, since [[integrated circuit\|ICs]] have reduced the cost of [[transistor]]s, the usual basic functional unit of modern computers, to essentially nothing, and the inherent disadvantages of serial machines (principally slower speed) make serial computers a bad fundamental approach.

	For example, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.		For example, in a machine which is [[binary]] internally, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.

	Serial ~~computers~~ were more common in the early stages of computing; they are slower, and have more complex control [[logic]], but seemingly used fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky. In reality, due to their complexity, they were not actually as economical in their use of components as it had been thought they would be; their greater complexity, and slower speed, turned out to be too high a price to pay for their somewhat limited component counts.		[[Serial computer]]s were more common in the early stages of computing than parallel computers; they are slower, and have more complex control [[logic]], but seemingly used fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky. In reality, due to their complexity, they were not actually as economical in their use of components as it had been thought they would be; their greater complexity, and slower speed, turned out to be too high a price to pay for their somewhat limited component counts.

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	==See also==		==See also==
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	* [[Serial computer]]

	[[Category: Hardware Basics]]		[[Category: Hardware Basics]]

Jnc: In reality, serial machines were not actually that economical

2024-05-12T10:06:17Z

In reality, serial machines were not actually that economical

← Older revision		Revision as of 10:06, 12 May 2024
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	For example, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.		For example, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.

	Serial computers were more common in the early stages of computing; they are slower, and have more complex control [[logic]], but ~~use~~ fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky.		Serial computers were more common in the early stages of computing; they are slower, and have more complex control [[logic]], but seemingly used fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky. In reality, due to their complexity, they were not actually as economical in their use of components as it had been thought they would be; their greater complexity, and slower speed, turned out to be too high a price to pay for their somewhat limited component counts.

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Jnc: rm invisible chars

2024-05-08T13:47:31Z

rm invisible chars

← Older revision		Revision as of 13:47, 8 May 2024
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	* [[Serial computer]]		* [[Serial computer]]

	[[Category: Hardware ~~Basics‎‎~~]]		[[Category: Hardware Basics]]

Jnc: An acceptable start

2024-03-29T16:41:10Z

An acceptable start

New page

A '''parallel computer''' is one which uses a [[parallel]] implementation for operations on larger units of data (e.g. the addition of two numbers). Essentially all computers are now parallel, since [[integrated circuit|ICs]] have reduced the cost of [[transistor]]s, the usual basic functional unit of modern computers, to essentially nothing.

For example, instead of having only a single-[[bit]] adder (so that to add two numbers, they are fed into it a bit at a time, one bit on each [[clock]] tick, starting with the least significant bit), a parallel computer would have a [[word]]-wide [[adder]], which would add two words together in a single clock tick.

Serial computers were more common in the early stages of computing; they are slower, and have more complex control [[logic]], but use fewer components - an acceptable trade-off at that stage, when the technology (e.g. [[vacuum tube]]s) was more expensive and physically bulky.

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==See also==

* [[Serial computer]]

[[Category: Hardware Basics‎‎]]