timothy from the unexpected-downsides dept.
Richard Kelleher writes "It seems the current design of multi-core processors is
not good for the design of supercomputers. According to IEEE: 'Engineers at Sandia National Laboratories, in New Mexico, have simulated future high-performance computers containing the 8-core, 16-core, and 32-core microprocessors that chip makers say are the future of the industry. The results are distressing. Because of limited memory bandwidth and memory-management schemes that are poorly suited to supercomputers, the performance of these machines would level off or even decline with more cores.'"
Programmers used to batch environments may find it hard to live without
giant listings; we would find it hard to use them.
-- D.M. Ritchie