some all and her displayed equal, however may be now in 901, sum of parts can be larger than the whole because accumulating floating point rounding errors. The original pm expected a very high floating point accuracy which no longer holds in j901, eg j901 assumes + is associative to make better utilization of multiple ALU. A possible fix is to give allowance factor like,
assert. *./ all > 0.9*her On Tue, Apr 30, 2019, 6:33 AM 'Mike Day' via Beta <[email protected]> wrote: > Thanks - your suggested replacement didn't work: > > load'jpm' > > start_jpm_ 1000000000 > > 17857142 > > f 1000 > > 117002 > > showdetail_jpm_ 'flp' > > recorded all lines > > used and max record count: 3,765 17,857,142 > > > |assertion failure: assert > > | assert*./all>:!.1e_12 her > > > However, commenting out the assert did the trick. > > Thanks > > Mike > > > > On 29/04/2019 22:26, Henry Rich wrote: > > The assert. is invalid because of floating-point precision, and it > > shows up in J901 because of order of operations. For a quick fix > > either delete it or replace it with > > > > > > assert*./all>:!.1e_12 her > > > > Henry Rich > > > > On 4/29/2019 1:54 PM, 'Mike Day' via Beta wrote: > >> I think the "also" paragraph in my earlier message, below, might have > >> been overlooked. > >> > >> I quite often use jpm to check performance line by line. I can't say > >> it doesn't work in any > >> > >> circumstances in J901 beta-d, but it does seem to have got more > >> unstable: > >> > >> For example, in J807: > >> > >> JVERSION > >> Engine: j807/j64/windows > >> Release-d: commercial/2019-03-18T13:21:35 > >> Library: 8.07.25 > >> Qt IDE: 1.7.9/5.9.6 > >> Platform: Win 64 > >> Installer: J807 install > >> InstallPath: c:/d/j807 > >> Contact: www.jsoftware.com > >> load'jpm' > >> start_jpm_ 100000000 > >> 1785713 > >> f 1000 > >> 117002 > >> showdetail_jpm_ 'f' > >> recorded all lines > >> used and max record count: 3,767 1,785,713 > >> > >> Time (seconds) > >> +--------+--------+---+----------------------------------+ > >> |all |here |rep|f | > >> +--------+--------+---+----------------------------------+ > >> |2.045513|0.000030|1 |monad +/@:,@:((] #~ >:) +/"1@:flp)| > >> +--------+--------+---+----------------------------------+ > >> showdetail_jpm_ 'flp' NB. I've removed several lines!!! > >> Time (seconds) > >> > +--------+--------+---+-------------------------------------------------------+ > > >> > >> |all |here > >> |rep|flp | > >> > +--------+--------+---+-------------------------------------------------------+ > > >> > >> |0.000002|0.000002|1 > >> |monad | > >> |2.045486|0.376456|1 |[0] y flp~(;~)0 > >> 2$0 | > >> |2.045488|0.376458|1 |total > >> monad | > >> | // | // | | > >> // | > >> |0.000002|0.000002| > >> 1|dyad | > >> |0.000772|0.000772|233|[10] > >> l=.l,next | > >> | // | // | | > >> // | > >> |0.001721|0.001721| 1|[14] > >> /:~l | > >> |2.045466|1.601660| 1|total > >> dyad | > >> | // | // | | > >> // | > >> |2.045488|1.601682|2 |total > >> definition | > >> > +--------+--------+---+-------------------------------------------------------+ > > >> > >> > >> while, in J901: > >> > >> JVERSION > >> Engine: j901/j64/windows > >> Beta-d: commercial/2019-04-21T12:38:39 > >> Library: 9.01.03 > >> Qt IDE: 1.8.2/5.12.2 > >> Platform: Win 64 > >> Installer: J901 install > >> InstallPath: c:/d/j901 > >> Contact: www.jsoftware.com > >> load'jpm' > >> start_jpm_ 100000000 > >> 1785713 > >> f 1000 > >> 117002 > >> showdetail_jpm_ 'f' NB. OK - it does work for this cover fn > >> recorded all lines > >> used and max record count: 3,765 1,785,713 > >> > >> Time (seconds) > >> +--------+--------+---+---------------------------------+ > >> |all |here |rep|f | > >> +--------+--------+---+---------------------------------+ > >> |1.930585|0.000020|1 |dyad +/@:,@:((] #~ >:) +/"1@:flp)| > >> +--------+--------+---+---------------------------------+ > >> showdetail_jpm_ 'flp'NB. the one I'm interested in!!! > >> |assertion failure: assert > >> | assert*./all>:her > >> > >> I imagine that the record count isn't a problem > >> > >> Is "jpm" deprecated now? > >> > >> Thanks, > >> > >> Mike > >> > >> On 25/04/2019 17:51, Mike Day wrote: > >>> Thanks. I wondered whether limits had changed. Is there any > >>> user-control available re recursion? I usually try to avoid it, > >>> but if I’m using someone else’s code... > >>> > >>> Also - I can’t give chapter and verse right now as away from J901 > >>> with this iPad: I recently tried to use jpm to check timings on > >>> lines of code but kept hitting an error when invoking > >>> showdetail_jpm_ , no matter how large the argument to start_jpm_ , > >>> > >>> Thanks > >>> > >>> Mike > >>> > >>> Please reply to [email protected]. > >>> Sent from my iPad > >>> > >>>> On 24 Apr 2019, at 19:32, Henry Rich <[email protected]> wrote: > >>>> > >>>> It did indicate trouble elsewhere. Thanks for the report. > >>>> > >>>> The code still gives stack error in J901. The recursion limit has > >>>> been reduced. > >>>> > >>>> Henry Rich > >>>> > >>>>> On 4/24/2019 3:28 AM, 'Mike Day' via Beta wrote: > >>>>> Another problem, (in Beta c as I'd rolled back) - not too > >>>>> important in itself but might > >>>>> > >>>>> indicate trouble elsewere > >>>>> > >>>>> J Wiki Essay > >>>>> > >>>>> > https://code.jsoftware.com/wiki/Essays/Partitions#The_Number_of_Partitions > >>>>> > >>>>> > >>>>> The/memo/adverb M.can be used to advantage here. > >>>>> > >>>>> pn =: -/@(+/)@:($:"0)@rec ` (x:@(0&=)) @. (0>:]) M. > >>>>> rec=: - (-: (*"1) _1 1 +/ 3 * ]) @ (>:@i.@>.@%:@((2%3)&*)) > >>>>> > >>>>> pn 1000 > >>>>> 24061467864032622473692149727991 > >>>>> > >>>>> But: > >>>>> > >>>>> pn 1000 > >>>>> |stack error: rec > >>>>> | pn 1000 > >>>>> pn 100 > >>>>> 190569292 > >>>>> > >>>>> JVERSION > >>>>> > >>>>> Engine: j901/j64/windows > >>>>> > >>>>> Beta-c: commercial/2019-04-03T11:03:34 > >>>>> > >>>>> Library: 9.01.03 > >>>>> > >>>>> Qt IDE: 1.8.2/5.12.2 > >>>>> > >>>>> Platform: Win 64 > >>>>> > >>>>> Installer: J901 install > >>>>> > >>>>> InstallPath: c:/d/j901 > >>>>> > >>>>> Contact: www.jsoftware.com > >>>>> > >>>>> > >>>>> whereas it worked in J8: > >>>>> > >>>>> pn 1000 > >>>>> 24061467864032622473692149727991 > >>>>> > >>>>> JVERSION > >>>>> Engine: j807/j64/windows > >>>>> Release-d: commercial/2019-03-18T13:21:35 > >>>>> Library: 8.07.25 > >>>>> Qt IDE: 1.7.9/5.9.6 > >>>>> Platform: Win 64 > >>>>> Installer: J807 install > >>>>> InstallPath: c:/d/j807 > >>>>> Contact: www.jsoftware.com > >>>>> > >>>>> > >>>>> Thanks, > >>>>> > >>>>> Mike > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> --- > >>>>> This email has been checked for viruses by Avast antivirus software. > >>>>> https://www.avast.com/antivirus > >>>>> > ---------------------------------------------------------------------- > >>>>> > >>>>> For information about J forums see > >>>>> http://www.jsoftware.com/forums.htm > >>>> > >>>> --- > >>>> This email has been checked for viruses by AVG. > >>>> https://www.avg.com > >>>> > >>>> ---------------------------------------------------------------------- > >>>> For information about J forums see > http://www.jsoftware.com/forums.htm > >>> > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
