The iPhone has very impressive customer loyalty numbers (I'm on my second one). Plus all of it's succes it despite it being AT&T-only in the US. But you are probably right about raw computing power vs some Android devices.
On Wed, Oct 20, 2010 at 6:18 AM, Don Dailey <[email protected]> wrote: > > On Tue, Oct 19, 2010 at 10:44 PM, David Fotland <[email protected]> > wrote: >> >> Mobile phones have very limited memory. On the iPhone I only have about >> 20 MB. This is a big limitation for UCT programs. > > But you need much less memory when you are running 6-7 times slower. I > browsed around on the web and found people complaining that the typical > android device only leaves them with something like 150 MB free (which is 7x > more than iphone) and that is probably not too bad given a 6x slower search > (if that is what it is.) That is like having close to a gigabyte free on a > PC if you assume memory use is linear with speed. > Everything I've read about the iphone indicates that it is a popular toy but > not very well suited to high performance computing (compared to other small > devices.) For example I have read that it sucks memory and gets worse over > time and that it's not a real OS (to me "real" mean you can run tasks in the > background) etc. In the performance numbers for chess programs that Ingo > quoted the top program was on an ipaq not an iphone. > I also saw that Android seems to be outselling iphone and probably the > majority of phones will be Android based soon. > Don > > > >> >> >> >> David >> >> >> >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Don Dailey >> Sent: Tuesday, October 19, 2010 9:48 AM >> To: [email protected] >> Subject: Re: [Computer-go] Candidates + Territory visualisation in >> Valkyria >> >> >> >> >> >> On Tue, Oct 19, 2010 at 12:28 PM, "Ingo Althöfer" <[email protected]> >> wrote: >> >> -------- Original-Nachricht -------- >> > Datum: Tue, 19 Oct 2010 11:48:57 -0400 >> > Von: Don Dailey <[email protected]> >> > ... >> >> > If we assume 400 ELO difference that is approximately equivalent to >> > 6 or 7 doublings - does that sound about right for the mobile phone >> > hardware you are comparing? >> >> I am not a hardware expert, so I do not know. >> I took the data from the SSDF list at >> http://ssdf.bosjo.net/list.htm There we have >> 1 Deep Rybka 3 x64 2GB Q6600 2,4 GHz 3213 +25 -23 ... >> .. >> 35 Pocket Fritz 3 Hiarcs Ipaq 214 624 MHz 2722 +53 -51... >> >> I'm not trying to refute you or claim you did anything wrong. I'm >> just suggesting a refinement to get a more accurate estimate of how much we >> can expect to lose going to the mobile phone platform. My refinement is >> more appropriate for what to expect when porting a GO program to the mobile >> platform. >> >> >> >> Trying to extrapolate what I know from your data and the "rybka >> adjustment", you get this: As a general rule of thumb, if you port your go >> program to a mobile platform you will get the same performance that you >> would get if you played on the PC at a time control 6 or 7 times faster. >> So for example if you set your program to play a game in 3 minutes on the >> Q6600 platform and other programs are playing 20 minute games, you should >> come relatively close to what you can expect on the mobile platform. >> >> >> >> Don >> >> >> >> >> >> >> >> I think, this Hiarcs version was especially tuned for "limited" hardware. >> >> >> >> They probably took the program that was easiest and most sensible to port. >> I believe Hiarcs is 32 bit program which will port to mobile phone >> hardware with the least amount of ELO loss. A 64 bit program would take an >> additional hit in performance being ported to 32 bit hardware. >> >> >> >> >> >> Ingo >> >> PS: The reason to mention go programs for mobiles was that Valkyria's >> graphic seems ideally suited for small screens. >> >> >> -- >> GRATIS! Movie-FLAT mit über 300 Videos. >> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome >> >> _______________________________________________ >> Computer-go mailing list >> [email protected] >> http://dvandva.org/cgi-bin/mailman/listinfo/computer-go >> >> >> >> _______________________________________________ >> Computer-go mailing list >> [email protected] >> http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > > > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
