Not exactly, each core is busy alright with work but with less integral power consumption (shorter connections). The problem, however, is to divide a single piece of work into two equal sized parts (in case of dual core) as Steven mentioned.
On Sun, Feb 14, 2010 at 3:07 PM, Ian Clark <[email protected]>wrote: > So they just sit around, taking it in turns to cool off? > > This is so unromantic it makes me weep. I paid good money for a new > Mac with 2 duo-cores just for the blighters to sit around skiving. > > I recall way-back-when, IBM introduced water-cooled CPUs. If memory > serves, there was a serious problem with algae getting in the cooling > system. (There's got to be a joke there somewhere.) > > Ian > > > On Sun, Feb 14, 2010 at 10:17 AM, Jan Jacobs <[email protected]> > wrote: > > Henry, Dieter, > > the reason why the rush to multiple core is the (power or) heat > dissipation > > in a single processor chip. When the transistor budget rises and the line > > sizes shrink also distances are increasing relatively and a lot of > useless > > power (heat) is dissipated in the electrical connections. It was > determined > > that the power density (Watt/um^2) of such a chip even compares to the > power > > density of a nuclear power reactor! So the reason to go to multiple cores > is > > to avoid blowing up the chip. Since november 2004 (Intel then > acknowledged > > the end of high end single core processor models) manfacturers are > putting > > local RAM close to (multiple) local processors. When cores are similar > this > > is called multi-core (as quad core) and with heterogeneous systems this > is > > called many-core. The latter ones are really champions in reducing power > > consumption. > > Jan. > > > > On Sat, Feb 13, 2010 at 7:45 PM, DIETER ENSSLEN <[email protected]> > wrote: > > > >> Hallo Henry > >> > >> Image processing comes to mind for the need for power; and video > >> processing, and there are always the gamers and hobbyists crying for > more > >> power, but with the latter it is power for the sake of power. > >> Then there are the people who set records for the most digits for math > >> constants and such. > >> > >> But no matter what we think, chip and computer manufacturers will keep > >> upping the ante. Last decades supercomputer is today's PC. > >> > >> thanks > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > > > > > > > -- > > Jan Jacobs > > Esdoornstraat 33 > > 5995AN Kessel > > T: +31 77 462 1887 > > M: +31 6 23 82 55 21 > > E: [email protected] > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Jan Jacobs Esdoornstraat 33 5995AN Kessel T: +31 77 462 1887 M: +31 6 23 82 55 21 E: [email protected] ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
