11. In practice, g is determined empirically for each parallel computer . 12. SIMD parallel computers can be traced back to the 1970s. 13. He works in data science, on optimization algorithms, parallel computer systems, simulation, and computer applications. 14. With support from the Office of Naval Research, the laboratory developed the first parallel computers . 15. Massachusetts played a key role in developing parallel computers . 16. Parallel computers divide the work among many processing chips.17. The aim was to build parallel computers for artificial intelligence applications using concurrent logic programming. 18. In 1990, Batcher was awarded the IEEE Eckert-Mauchly Award for his pioneering work on parallel computers . 19. Sorting algorithms are also given for parallel computers . 20. A program running on a parallel computer may utilize different numbers of processors at different times.