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The interplay of computer science and large scale scientific calculations

The history of computing has been characterized by the statement that what the manufacturer makes, the customer takes. To the extent that this is true, it is not only an interesting and perceptive comment on history but also a testimonial to the remarkable nature of the sequential, stored program, electronic computer. If that invention had not fit so well from the beginning to a wide variety of interesting problems, the development of hardware and software systems could not have proceeded as independently of scientific motivation as it did. Of course, scientific requirements have influenced systems design, but the prominent parameters such as speed or memory size could be understood without detailed knowledge of scientific problems or programs and the parameters which might depend upon the structure of programs could be ignored.