Library/PT 130/Sec 2/Reading Comp
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Reading Comprehension

Passage Breakdown

Philip Emeagwali used ideas from nature to make faster computers that solve real problems. He linked tens of thousands of small machines so they could work at the same time (rather than one after another) and copied tree-branch patterns to organize how they share information, which helped him model how oil moves underground. Later he used honeycomb-like spacing to design an even bigger system for long-term weather prediction, and he believes computer designers will increasingly borrow efficient solutions from nature.

Logic Breakdown

Look for explicit statements describing obstacles to using massively parallel systems for oil-field modeling—particularly any sentence about difficulties in dividing tasks or preventing interference among connected smaller computers.

Passage Stimulus

Passage Redacted

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13.

It can be inferred from the passage that one of the reasons massively parallel computers had not been used to model oil field flow prior to 1989 is that

Correct Answer
E
The passage explicitly identifies interference among connected smaller computers as a major obstacle: "One of the great difficulties of parallel computing is dividing up the tasks among the separate smaller computers so that they do not interfere with each other." The passage then describes how Emeagwali overcame this by using a tree-branching–based network to gather and broadcast messages efficiently. Thus it is reasonable to infer that prior to 1989 the risk that smaller computers would interfere with one another prevented the use of massively parallel systems for oil-field modeling.
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