You guys I tested how long takes +,-,*, / of 1.000.000 INT and 1.000.000 of DOUBLES on JME with this program - test on your phone too *please* !
http://java.wmhelp.cz/Downloads/SpeedTester.zip My times for Nokia e60 (200+ MHz) are: INTs: 113, 158, 162, 416 ms DOUBLEs: 969, 1012, 823, 876 ms As we can ALL see, working with DOUBLEs is NOT 100x - 1000x times slower damn! 2009/10/28, Lynn W. Taylor <[email protected]>: > > Significant computing power is increasingly becoming a throw-away > commodity. > > ... and with video being pushed to phones, I'd expect next year's phones to > have significant CPU power. > > I don't think time matters, except that in order for a phone to complete a > (2 or 3 year??) CPDN work unit, it has to survive 2 to 3 years. > > -- Lynn > > [email protected] wrote: > >> Only a very few projects will be able to create smaller tasks. >> >> CPDN tasks cannot be reduced without shovelling about 1GB of data from the >> device back to the server. >> s...@h tasks are already reduced to the minimum. >> ... >> >> With no FPU, the increase in time is on the order of times 1000. Which >> would mean that the crunch times would have to be reduced by 1000, or the >> deadline would have to be increased by a factor of 1000. s...@h for example >> would have to increase the deadlines from one month to 100 years. Or the >> data span would have to be reduced from 115 seconds of data to 0.1 seconds >> of data (the overlap is currently 15 seconds of data). >> >> Integer only projects such as (possibly) prime grid do not suffer from >> this >> problem. >> >> Non-CPU intensive projects also do not suffer from the problem. >> >> You should look to those types of projects for possibilities. >> >> jm7 >> >> >> >> Petr Hájek >> <hajek.p...@gmail >> .com> To >> Sent by: [email protected] >> <boinc_dev-bounce cc >> [email protected] >> u> Subject >> Re: [boinc_dev] BOINC for Mobile >> Phones - please test on your Java >> 10/28/2009 09:57 phone >> AM >> >> >> >> >> >> >> >> >> OK, for the 3rd time: >> >> "2. There will be absolutely need for different and smaller units so it >> may >> be counted in few hours / days on typical phone / PDA" >> >> 2009/10/28, [email protected] <[email protected]>: >> >>> CPDN has long deadlines because it has correspondingly long crunch times. >>> An 800 MHz computer with an FPU (and CPDN uses the FPU) takes well in >>> excess of 9 months to crunch the data running 24/7. A 600 MHz device >>> >> with >> >>> no FPU will not finish within the lifetime of the phone - even running >>> 24/7. >>> >>> Will this always be true? I cannot be certain - ever is an awfully long >>> time. >>> >>> Deadlines vaguely track crunch times on most projects. Long deadlines >>> usually have correspondingly long >>> >>> jm7 >>> >>> >>> >>> >>> Petr Hájek >>> <hajek.p...@gmail >>> >>> .com> >>> >> To >> >>> Sent by: [email protected] >>> <boinc_dev-bounce >>> >> cc >> >>> [email protected] >>> u> >>> >> Subject >> >>> Re: [boinc_dev] BOINC for Mobile >>> >>> Phones - please test on your Java >>> >>> 10/28/2009 09:48 phone >>> AM >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> 1. Some projects has LONG deadlines - Climate for example. >>> 2. There will be absolutely need for different and smaller units so it >>> >> may >> >>> be counted in few hours / days. >>> >>> 2009/10/28, [email protected] <[email protected]>: >>> >>>> When you are not using the keypad and the phone is not active, the >>>> processor is probably running at about 6 MHz. With no FPU. >>>> >>>> jm7 >>>> >>>> >>>> >>>> "Lynn W. Taylor" >>>> <[email protected]> >>>> Sent by: >>>> >>> To >>> >>>> <boinc_dev-bounce Carl Christensen >>>> [email protected] <[email protected]> >>>> u> >>>> >>> cc >>> >>>> [email protected] >>>> >>>> >>>> Subject >>> >>>> 10/27/2009 02:54 Re: [boinc_dev] BOINC for Mobile >>>> PM Phones - please test on your >>>> >>> Java >> >>> phone >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> I keep thinking that there are a lot of cell phones out there, and a >>>> >>> lot >> >>> of untapped potential. >>>> >>>> The one in my pocket (Palm Pre) is running some variant of the ARM >>>> processor at something like 600 MHz, which is a nontrivial amount of >>>> >>> CPU. >> >>> Palm goofed on the battery (I can go two days, tops), but the rest of >>>> the phone, including WebOS, is pretty cool. >>>> >>>> Cell phones as a group are probably second only to smart cards in the >>>> total number of available clock cycles. >>>> >>>> -- Lynn >>>> >>>> Carl Christensen wrote: >>>> >>>>> I don't quite understand the bashing of this guy's mobile project; >>>>> >>>> there >>> >>>> was that "boincoid" a year or two ago which was in vogue, and IMHO the >>>> >>> same >>> >>>> ones bashing the "usefulness" of mobiles are the ones crowing about how >>>> great GPU's & CUDA & Sony Playstations etc are (completely ignoring the >>>> fact that 99.99999% of real-world science apps won't run on it). Not >>>> >>> to >> >>> mention that there's all sorts of dubious-benefit computer sciencey >>>> >>> stuff >> >>> out there trying to turn boinc into some god-awful grid mess. so I'm >>>> willing to keep an open mind about it (and GPU's & grids ;-). >>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> boinc_dev mailing list >>>>> [email protected] >>>>> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >>>>> To unsubscribe, visit the above URL and >>>>> (near bottom of page) enter your email address. >>>>> >>>>> _______________________________________________ >>>> boinc_dev mailing list >>>> [email protected] >>>> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >>>> To unsubscribe, visit the above URL and >>>> (near bottom of page) enter your email address. >>>> >>>> >>>> >>>> _______________________________________________ >>>> boinc_dev mailing list >>>> [email protected] >>>> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >>>> To unsubscribe, visit the above URL and >>>> (near bottom of page) enter your email address. >>>> >>>> >>> >>> -- >>> S Pozdravem >>> Petr Hájek >>> _______________________________________________ >>> boinc_dev mailing list >>> [email protected] >>> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >>> To unsubscribe, visit the above URL and >>> (near bottom of page) enter your email address. >>> >>> >>> >> >> -- >> S Pozdravem >> Petr Hájek >> _______________________________________________ >> boinc_dev mailing list >> [email protected] >> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >> To unsubscribe, visit the above URL and >> (near bottom of page) enter your email address. >> >> _______________________________________________ >> boinc_dev mailing list >> [email protected] >> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >> To unsubscribe, visit the above URL and >> (near bottom of page) enter your email address. >> >> -- S Pozdravem Petr Hájek _______________________________________________ boinc_dev mailing list [email protected] http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev To unsubscribe, visit the above URL and (near bottom of page) enter your email address.
