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IBM's Eight-Core, 4-GHz Power7 Chip
pacopico writes "The first details on IBM's upcoming Power7 chip have emerged. The Register is reporting that IBM will ship an eight-core chip running at 4.0 GHz. The chip will support four threads per core and fit into some huge systems. For example, University of Illinois is going to house a 300,000-core machine that can hit 10 petaflops. It'll have 620 TB of memory and support 5 PB/s of memory bandwidth. Optical interconnects anyone?"
That's not really right, you obviously haven't designed an OS or taken and OS course in Computer Science. The OS MAY run a process a few ms at a time and swap tasks in and out all day long. That's called "round robin" scheduling where each processs (NOT THREAD) is equal in priority. However that is NOT always the case, you can have other scheduling algorithms that schedule based on priority where the highest priority task gets the CPU until blocked then the scheduler does a context switch and the next highest task runs until it blocks or a higher priority task unblocks then it gets the CPU. It can get quite complicated not to let a task starve and get all processes some CPU time. You other comment about memory regions is true IF it's on an Intel CPU and not always true on a AMD or other CPU design. How the processor accesses memory along with the way the OS allocates memory is very important when you get into multiple CPUs. The cache on the other core is not invalidated (which cache do you mean? L1 or L2?) UNLESS the threads on each CPU share memory addresses. The instruction cache is not hit much at all. A well designed multi-threaded program would minimize this problem. Compilers are now smart enough to try to optimize code to prevent the problem if the programmer did not. It's not a trivial exercise to convert code designed for a single CPU (single or multi-threaded) to run on a multi-core CPU or multiple CPUs.
if there Really was 'global cooling' would http://news.slashdot.org/article.pl?sid=08/06/27/1650207&from=rss the north pole be projected to be completely ice free for the first time in recorded history?
not to mention, in 2007 that the northwest passage was completely ice free for the first time in recorded history. (and it's going to be open this year too)http://science.slashdot.org/article.pl?sid=07/09/15/2023212&tid=14
maybe the northeast passage will be ice free for the first time this year too, but i haven't heard about that yet.
https://www.gnu.org/philosophy/free-sw.html
Real credible blog.
I guess I should believe that over the vast majority of intellectuals.
His girlfriend has a cock bigger than mine.
Fascism trolls keeping me up every night. When I starts a preachin', he HITS ME WITH HIS REICH!
BTW: If you think a post is clueless then put some information in your reply, AC ad-homs won't convince anyone of anything except perhaps that your a witless arsehole.
moron
Exactly, Vista doesn't have any usefull features.
New things are always on the horizon