Authors: Hockney, R. W.; and Jesshope, C. R.
Title: Parallel Computers 2: Architecture, Programming and Algorithms
Publisher: Adam Hilger, Bristol and Philadelphia: 1988
Originally published in 1981, when commercializing the technology multi-processor arrays for supercomputing was in its gestation period, this online book describes the thinking behind medium- and coarse-grained parallel computing innovations. I could go on at length about why this is important, but I’ll leave that to you.