Re: [Gretl-devel] a short script to crash Gretl on xp: working modification

Dear All, I tried Oleh's short script but did not find any crash under my win XP sp3. I am using gretl 1.10.2 (build date 2015-09-13, 32bit for windows). open okun.gdt d_u = diff(u) list lags_g =lags(4,g) include armax.gfn mmm = armax(2,2,d_u,lags_g,1,1,0,1,1) gretl version 1.10.2 Current session: 2015-09-24 09:52 ? open okun.gdt Read datafile C:\Program Files\gretl\data\PoE\okun.gdt periodicity: 4, maxobs: 98 observations range: 1985:2 to 2009:3 Listing 3 variables: 0) const 1) g 2) u ? d_u = diff(u) Generated series d_u (ID 3) ? list lags_g =lags(4,g) Generated list lags_g ? include armax.gfn C:\Program Files\gretl\functions\armax.gfn ? mmm = armax(2,2,d_u,lags_g,1,1,0,1,1) Generated matrix mmm I also tried Allin's script as follows. It also works fine. nulldata 100 setobs 1 1 --special-time-series set seed 77431 series y = normal() loop p=1..2 -q loop q=1..2 -q catch arma p q ; y -q endloop endloop Those crashes seemed not appear under my XP. Yi-Nnung 2015-09-23 14:22 GMT+08:00 : > Dear Allin, > > Doesh't crahes, > > even with additional > > modification below > > doesn't > > > nulldata 100 > > setobs 1 1 --special-time-series > > set seed 77431 > > series y = normal() > s = "" > > loop p=0..2 -q > >     loop q=0..2 -q > >       catch arma p q ; y -q @s > >     endloop > > endloop > > > eval  $coeff > > > In my first example > > on Ubuntu there was no > > cases with err>0 > > so the dataset goes without catch > > I removed catch: it crashes > > In one-loop format -doesn't > > > > Oleh > > > > > > > > > > 23 вересня 2015, 01:09:23, від "Allin Cottrell" : > > > > > >   On Tue, 22 Sep 2015, oleg_komashko(a)ukr.net wrote: > > > > > > > Dear  Allin, > > > > This script doesn't crashes > > > > > > Thanks, Oleh. So know we know, by the empirical method, that running > > > a double loop over p and q (with a max of p=2, q=2) in arma > > > estimation is not in itself a sufficient cause of a crash on Windows > > > XP. > > > > > > The forensic method in software development often proceeds by > > > seeking the minimal program that provokes a crash. So now we need to > > > look a little further. Does it make a difference if the loops start > > > at p=0, q=0, rather than p=1, q=1 as in my script (all else > > > unchanged)? > > > > > > Thanks very much for helping to debug this issue. > > > > > > >> [C]ould I ask you just to confirm Yes or No, whether the script > > > >> that I posted crashes on XP? Here it is again: > > > >> > > > >> nulldata 100 > > > >> setobs 1 1 --special-time-series > > > >> set seed 77431 > > > >> series y = normal() > > > >> loop p=1..2 -q > > > >>     loop q=1..2 -q > > > >>       catch arma p q ; y -q > > > >>     endloop > > > >> endloop > > > > > > Allin > > > _______________________________________________ > > > Gretl-devel mailing list > > > Gretl-devel(a)lists.wfu.edu > > > http://lists.wfu.edu/mailman/listinfo/gretl-devel > > > > _______________________________________________ > > Gretl-devel mailing list > Gretl-devel(a)lists.wfu.edu > http://lists.wfu.edu/mailman/listinfo/gretl-devel _______________________________________________ Gretl-devel mailing list Gretl-devel(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-devel