Re: If you really absolutely need more capacity, you can ask a wizard to enlarge me

[Hans Hagen via ntg-context <ntg-context@ntg.nl>]

On 9/9/2021 12:52 AM, Marcus Vinicius Mesquita via ntg-context wrote:
> Dear list,
> 
> In the MWE below, ConTeXt lmtx throws an error with the message in the 
> title:
> 
> \starttext
> \startluacode
> 
> local upperlimit = 90000
> 
> context.starttabulate({ "|l|l|l|" })
> for i=1,upperlimit do
> context.NC()
> context("word 1")
> context.NC()
> context("word 2")
> context.NC()
> context("word 3")
> context.NC()
> context.AR()
> end
> context.stoptabulate()
> 
> \stopluacode
> \stoptext
> 
> But it compiles with no problems with MKIV.
> 
> context version: 2021.09.06 11:47
> 
> How to avoid this with lmtx?
In luatex there is also a max on configured memory usage but because in 
luametatex we have larger nodes you hit limits earlier. Also, the memory 
allocation in luametatex is somewhat different (larger nodes are 
compensated by savings elsewhere so in the end mem usage for this run is 
similar).

         luatex  luametatex

pages   2196    2196
pps/s      8      11
time     278     195
mem     1.1G    1.1G

now, luametatex reports

tex memory      > bumping category 'node' succeeded, details: 
all=400500000 | ini=0 | max=50000000 | mem=44500000 | min=1000000 | 
ptr=-843956 | set=50000000 | stp=500000 | top=43999999

you can bump the the max in the configuration file and also the step. As 
you can see, luametatex runs quite a bit faster on this test but that is 
due to other differences between the two engines.

The reason why it does run on my machine is that i have this:

\enableexperiments [tabulatesparseskips]
\enableexperiments [tabulateusesize]

this makes tabulate a bit more efficient in terms of node usage so i 
stay some 20% below the configured max .. you can try to run with this 
option. Of course adding more text will also demand more mem but then 
you can always bump the max (in a configuration file in texmf-local or 
so; maybe some day i will add a --huge flag to the runner).

Hans

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                                           Hans Hagen | PRAGMA ADE
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