using binary built from master branch,

   showdetail_jpm_ 'moves'
recorded all lines
used and max record count: 23 17,856

 Time (seconds)
+--------+--------+---+-----------------------------------------+
|all     |here    |rep|moves |
+--------+--------+---+-----------------------------------------+
|0.000001|0.000001|1  |monad |
|0.000006|0.000006|1  |[0] mn=./:~y |
|0.000006|0.000006|1  |[1] mv=.>:i.>./y |
|0.000018|0.000018|1  |[3] mv=.(,|."1),/@:(,."0 1(*/&0 1 2))mv |
|0.000016|0.000016|1  |[4] new=.(#~*/"1@:(>&_1))~./:~"1 mn-"1 mv|
|0.000047|0.000047|1  |total monad |
+--------+--------+---+-----------------------------------------+

Perhaps it is ok now.

The !^:_1 is another remaingin bug of removing terminated null, 
This will be fixed in the next beta. Thank you for the clear report.


Wed, 01 May 2019, JBeta написал(а):
> Thanks. NB - there's a second, strange and peculiar, problem lurking below
> my
> discussion of the JPM one!
> 0) And before I ask about those two,  should Jbreak.bat still work? I was
> unable to
> break some occasions of inadvertent infinite loops earlier today.
> 1) JPM
> Yes, flpa was executed - I didn't quote the line,  but it was something like
> flpa 200.
> Anyway,  here's an example, with a simpler function, moves, which is
> examining
> the Nim game in Euler Project problem 665,  at
> https://projecteuler.net/problem=665,
> not that I'm asking for help there.
>   load'jpm'
>    start_jpm_  1000000
> 17856
>    moves 3 1
> 0 3
> 0 2
> 0 1
> 1 2
> 1 1
>    showdetail_jpm_ 'moves'
> recorded all lines
> used and max record count: 23 17,856
> 
> |length error: usage
> |   lvl=.mbgn     usage mend
> 
> Here's "moves":
> moves =: 3 : 0
> mn    =. /:~ y
> mv    =. >:i.>./ y
> NB. echo mn;
> mv    =. (,|."1) ,/@:( ,."0 1(*/&0 1 2 ))mv
> new   =. (#~*/"1 @:(>&_1) ) ~. /:~"1 mn -"1 mv
> )
> 
> 2) Strange Problem:
> In looking for something for you to get your teeth into,  I encountered
> this:
>    decode"0 ]4 15
> |spelling error
> |   3 :'(-(2&!-y"_)%1e_3&* 2&!"0 D:1 ])^:_[2&<@|@{:}2,:2%:y*!2',�م
> |                                                              ^
> |   n=.<:<.2    !inv y
> 
> whereas (!?):
>    decode 4 15
> |open quote
> |   3 :'(-(2&!-y"_)%1e_3&* 2&!"0 D:1
> ])^:_[2&<@|@{:}2,:2%:y*!2',�م��,�مR@    n'>
> | ^
> |   n=.<:<.2    !inv y
> 
>    decode =: 3 : 0   NB. the "offending" code
> n =. <:<.2 ! inv y
> m =. y - 2 ! >: n
> m,."1 n
> )
> 
> I couldn't find the explicit function using "find in files" in my user
> folder,
> nor in ~system ...
> 
> Before you ask,  the above behaviour (in both cases) was in a fairly newly
> started session in JQt.  So I don't think there was a lot of junk lying in
> wait
> in memory from earlier in the session.
> 
> Version, In case it's relevant,
>    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
> 
> Thanks,
> 
> Mike
> 
> 
> On 30/04/2019 18:53, Henry Rich wrote:
> > Perhaps flpa was never executed and this is what happens in that case? 
> > I won't be much help unless you can give me a failing testcase.
> > 
> > JPM was not changed for 9.01, nor was the code for logging PM events. 
> > What WAS changed was the code that checks to see whether debug/pm/other
> > special stuff is active.  This was streamlined to make the case of
> > nothing active as fast as possible.  I could imagine that the first or
> > last PM log record might be missing; nothing else comes to mind as
> > probable.
> > 
> > It would be great if you could figure out what's going on.
> > 
> > Henry Rich
> > 
> > On 4/30/2019 1:34 PM, 'Mike Day' via Beta wrote:
> > > Latest difficulty, in beta D despite my mislabelling earlier:
> > > 
> > >    showdetail_jpm_ 'flpa'
> > > recorded all lines
> > > used and max record count: 54,375 1,785,713
> > > 
> > > |length error: usage
> > > |   lvl=.mbgn     usage mend
> > > 
> > > As far as I could see, both mbgn and mend were empty, in that:
> > > 
> > >    # every mbgn;mend
> > > 0 0
> > > 
> > > I have seen this sort of thing in earlier J versions,  but on this
> > > occasion,
> > > 
> > > the error doesn't arise in J807 (JQt)
> > > 
> > > Thanks again for any help,
> > > 
> > > Mike
> > > 
> > > 
> > > On 30/04/2019 09:22, 'Mike Day' via Beta wrote:
> > > > Thanks.
> > > > 
> > > > Noone else has commented apart from Bill Lam,  so perhaps this
> > > > utility isn't used much,
> > > > 
> > > > but might you find time to suitably modify the script, pm.ijs,
> > > > in later beta versions?
> > > > 
> > > > Cheers,
> > > > 
> > > > Mike
> > > > 
> > > > On 30/04/2019 01:13, Henry Rich wrote:
> > > > > The times that are connected are session times which
> > > > > typically will be some
> > > > > thousands of seconds with the important information down in the
> > > > > nanoseconds. It would be a textbook example of how to lose
> > > > > precision EXCEPT
> > > > > that most of the time the positive and negative values alternate.
> > > > > 
> > > > > I remember now that I started by subtracting the starting
> > > > > time from the
> > > > > time values and with that change the !.1e_12 worked. Better
> > > > > just to remove
> > > > > the assert.
> > > > > 
> > > > > Henry Rich
> > > > > 
> > > > > On Mon, Apr 29, 2019, 7:16 PM bill lam <[email protected]> wrote:
> > > > > 
> > > > > > 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
> > > > > > > > > > > > 
> > > > > > > > > > > > 
> > > > > > > > > > > > 
> > > > > > > > > > > > 
> > > > > > > > > > > > ---
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====================================================
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