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"After the Gordon Bell work, some critics said we were using contrived problems with regular domains, easy load balance, and so on, to get such high efficiency on a massively parallel computer. So, this paper shows that same high efficiency on a very ugly production code, putting that criticism to rest.
"Besides being the first fair comparison of a vector supercomputer with a massively parallel computer on a real production code, it was the first to use a MIMD (Multiple Instruction, Multiple Data) architecture as a truly multiple-program system. Most MIMD systems are actually used as SPMD (Shared Program, Multiple Data)... but here, we loaded eight different programs into different parts of the system."
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