i am reading a paper about making a kernel which supports cooperative multitasking, to replace the current A2 kernel which supports more wide spread blocking synchronization. i wonder if they’ve managed to change the kernel and if current A2 has this lock free kernel or not. i remember i have read something about problems they had with drivers - they need to be rewritten to not use interrupts any more.
#multitasking #cooperative_multitasking #theses #paper #a2 #oberon #operating_systems #blocking_synchronization #preemptive_multitasking #parallelism #programming
I don’t want to duck your question entirely. I might as well flame a bit about my personal unhappiness with the current trend toward multicore architecture. To me, it looks more or less like the hardware designers have run out of ideas, and that they’re trying to pass the blame for the future demise of Moore’s Law to the software writers by giving us machines that work faster only on a few key benchmarks! I won’t be surprised at all if the whole multithreading idea turns out to be a flop, worse than the “Itanium” approach that was supposed to be so terrific—until it turned out that the wished-for compilers were basically impossible to write.
Let me put it this way: During the past 50 years, I’ve written well over a thousand programs, many of which have substantial size. I can’t think of even five of those programs that would have been enhanced noticeably by parallelism or multithreading. Surely, for example, multiple processors are no help to TeX.
#tex #donald_knuth #interview #2008 #multithreading #itanium #multicore #compilers #parallelism
