He later served as the chief architect of the ILLIAC IV supercomputer .
Slotnick , in papers published with John Cocke in 1958 , discussed the use of parallelism in numerical calculations for the first time .
Slotnick later served as the chief architect of the ILLIAC IV supercomputer .
Slotnick , in papers published with John Cocke in 1958 , discussed the use of parallelism in numerical calculations for the first time .