Quoting Curtis Olson: > On 11/7/06, Frederic Bouvier <[EMAIL PROTECTED]> wrote: > > > FGFS doesn't use threading much at that time. Only for the scenery loader > > and > > metar. One can thing of putting the FDM or AI in other threads, or maybe > > even > > divide the viewport into small areas that could be rendered in parallel. I > > don't know if its doable, but for now, you will only see an improvement > > running > > multiple programs in parallel. As you already see, Atlas or Terrasync can > > run on > > their own core and not disturb FG. > > > > In FlightGear we intentionally minimize the use of threading to places where > there is a huge need. > > Adding a thread significantly increases the complexity of the code and can > hide a large variety of execution order and timing problems which can be > incredibly difficult to debug and fix. > > If we are ever add additional threads, it will be only because we are forced > to by clear and overwhelming performance considerations (and not for design > or preference reasons.)
Ok, but you have to acknowledge that the trend is to multiply the number of cores that are possibly less porwerful on their own. Look the frequencies : 2 years ago, you had one core clocked over 3Ghz, now 2 cores are clocked at about 2.4 / 2.6 Ghz, and both Intel and AMD are announcing/releasing Quad core these days. So, if we don't want FG not using more than 50% CPU, and perhaps not more than 25% further in time, we will have to go to that direction. -Fred -- Frédéric Bouvier http://frfoto.free.fr Photo gallery - album photo http://www.fotolia.fr/p/2278/partner/2278 Other photo gallery http://fgsd.sourceforge.net/ FlightGear Scenery Designer ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
