perhaps all indirect data types including sparse data types.
On Sat, Apr 28, 2018, 12:40 AM Henry Rich <[email protected]> wrote:
> It turns out that virtual blocks sometimes don't perform well on
> extended/rational. I am going to disable virtual blocks for
> extended/rational until that is fixed. The problem is that the system
> spends too much time twiddling usecounts; the solution is to do for
> extended/rational what has been done for boxes.
>
> Henry Rich
>
> On 4/24/2018 5:31 AM, Arie Groeneveld wrote:
> > I noticed a much longer execution time in J807-beta compared with J806
> > concerning the calculation of Bell polynomials.
> >
> > Verbs:
> >
> > mndiff=:[:;<@(({.*(#~0<])@}.),.( +/@:,:"1 -@I.@:~:&0 |."0 1 {.&_1
> > 1@#)@}.)@,&0"1
> > mnmul=: +/@:,:&0 1"1
> > mnsum=:(+/@:({."1),}.@{.)/.~}."1
> > diffM=: mnsum@(mnmul,mndiff)
> >
> > BellP=: diffM&.>^:(<`(<@,:@1 0x"_)) f.
> >
> > JVERSION
> > Engine: j807/j64/linux
> > Beta-d: commercial/2018-04-17T16:06:53
> > Library: 8.07.13
> > Qt IDE: 1.7.1/5.5.1
> > Platform: Linux 64
> > Installer: J807 install
> >
> >
> >
> > 6!:2 'BellP 30'
> > 26.1978
> >
> >
> >
> >
> > JVERSION
> > Engine: j806/j64/linux
> > Release: commercial/2017-11-06T09:54:01
> > Library: 8.06.09
> > Qt IDE: 1.6.2/5.3.2
> > Platform: Linux 64
> > Installer: J806 install
> >
> >
> > 6!:2 'BellP 30'
> > 2.34475
> >
> >
> > This all of course apart from bad programming practice. :-)
> >
> >
> > @@i
> >
> >
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>
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