Roland Andrew Sweet (March 14, 1940, in St. Petersburg, Florida – April 15, 2019) was an American mathematician and computer scientist.
He is known for his software contributions[1] exploiting computer vectorization on Cray super computers including CRAYFISHPAK,[2] multigrid solvers for elliptic problems, vectorized versions of the fast Fourier transforms, parallelized versions of the cyclic reduction algorithm, preconditioned conjugate gradient methods and numerous others.
He studied at St. Petersburg Junior College and then obtained a BS in Mathematics from Florida State University in 1963.
D. from the Computer Science department at Purdue University in 1967, supervised by John Stanley Maybee,[3] and he joined the Computer Science Department at Cornell University in 1967 as an associate professor.
Two years later he transferred to a position at the National Bureau of Standards Labs in Boulder and rejoined the Mathematics Department at University of Colorado in Denver as a full professor and Director of the Computational Mathematics Group.