I think the real issue is somehow infinity is evaluated. same as in case that Joey had reported, where the tFm matrix contained both _ and __ , so the matrix inner prodct may contain items such as _ + __ which is NaN.
On Sun, Jan 20, 2019, 10:26 AM bill lam <[email protected] wrote: > Ian, I just took a quick look at your data, > > iQTC=. 3!:2 fread '~/iQTC.bin' > iQTC > 6 > Poutput=. 3!:2 fread '~/Poutput.bin' > Poutput > 5 > buf=. 3!:2 fread '~/buf.bin' > $buf > 4435 > 3!:0 buf > 8 > _ e. buf > 1 > __ e. buf > 0 > > So the bug is not Qt Console output related. > the cd error occur because buf contained _ so that > it can't be coerced to integer. I think the problem is > inside plot or changes in J Engine that an infinity > is evaluated during generate data for plot. > > if you run on jqt, try force a exception whenever _ > is encountered. Inside jzplot.ijs > > qt_gpbuf=: 3 : 0 > assert. 2 > #$y > if. _ e. ,y do. [:0 end. NB. add this line to force error > buf=: buf,y > ) > > Then examine the calling stack to trace where it had > happened. > > If you are using the gui debugger, no need to add extra dbr 1. > > On the other hand, if you are not using gui debugger, then > needs to start a debug session using dbr 1 > When it enter suspension mode, type > dbctx'' > to see where it occurred, and then check the variable content. > dbstk'' > to examine calling stack > dbret'' > to cut stack and let it returns to the place that calling > qt_gpbuf and then can examine values there. > > type dbhelp will give a brief summary of commands. > > > Sat, 19 Jan 2019, Ian Clark написал(а): > > @Bill I've copied you (…pm) in case the attached zipfile gets stripped > off > > the forum copy. > > > > When I reported that (dbr 1) cures my Plot problems with j807, I was too > > hasty. I conjectured that there was a second bug that wasn't cured by > (dbr > > 1). > > I've now isolated this "second bug". The attached script plus bin files > > reproduces it in j807. > > > > 1. Unzip repro.zip and install in ~/ … > > ~/repro.ijs > > ~/buf.bin > > ~/iQTC.bin > > ~/Poutput.bin > > > > 2. Launch j807 jqt and ENTER… > > load '~/repro.ijs' > > [see: domain error: cd] > > rc=_1 cder: 6 0 > > > > 3. repeat 2 but set debugging on first… > > dbr 1 > > load '~/repro.ijs' > > [still error -but thanks to: dbr 1 a debug session is entered before the > > script can finish.] > > > > HOWEVER... if repro.ijs can't do anything but fail, then it's not a good > > demo of the bug I'm encountering in my (elaborate) app. > > So let us show the error doesn't occur with an earlier version of J. > > > > 4. Launch j805 jqt (I haven't got j806 installed so I haven't tried it) > and > > ENTER… > > load '~/repro.ijs' > > rc=0 cder: 0 0 > > > > Sometimes 4 fails with > > |domain error: chkgl2 > > This is because chkgl2 gets the argument 1 instead of 0 for "ok". > > The purpose of chkgl2 seems to be to convert an integer return-code from > > the dylib into a J-error. > > I haven't worked out why yet - normally the dylib returns 0 here, but > when > > my startup is disabled it returns 1. > > But the main thing is that, inside glcmds, the (cd) call itself succeeds, > > giving (0 0 -: cder''). > > > > But step 3. doesn't matter, except as proof that my example (sometimes) > > gives no error in an earlier release of jqt. > > What matters is the (cd) call failing in step 2. And, as step 3 shows, it > > is not cured by (dbr 1) as I originally thought. > > > > Ian Clark > > > > > > On Fri, 18 Jan 2019 at 07:16, bill lam <[email protected]> wrote: > > > > > It helps if your can tell the followings > > > > > > 3!:0 buf > > > Poutput > > > iQTC > > > cder'' > > > > > > during suspension. > > > > > > Fri, 18 Jan 2019, Ian Clark написал(а): > > > > I was too sanguine when I said that: > > > > dbr 1 > > > > made all my plot-nonavx problems go away. It doesn't. > > > > > > > > I'm getting this message from a complex app I'm working on, with > certain > > > > sorts of line chart: > > > > > > > > |domain error: cd > > > > | rc=. glcmds`glcmds_jglc_@.(Poutput=iQTC)buf > > > > > > > > which arises within the verb: qt_gpapply_jzplot_ seemingly the > result of > > > a > > > > bad call into the libjqt.dylib > > > > > > > > However it doesn't stop the app showing a correct Plot window. > > > > > > > > I gather there will be fixes for connected problems soon. If they > don't > > > > make the above error go away, I'll probe deeper, to replicate the > error > > > > with a simpler example. For now, it's just great to have Plot working > > > (more > > > > or less) with j807/j64nonavx/darwin. > > > > > > > > BTW the app works just fine with j805. > > > > > > > > On Fri, 18 Jan 2019 at 05:09, bill lam <[email protected]> wrote: > > > > > > > > > Thank you Joey. Ian had already sent me the files > > > > > and I can reproduce the bug. I'll also forward > > > > > that to Eric and Henry. > > > > > > > > > > I think the bug exists in all platforms but somehow > > > > > only Darwin nonavx can produce the random data > > > > > for NaN failure. > > > > > > > > > > Thu, 17 Jan 2019, Joey K Tuttle написал(а): > > > > > > Bill, > > > > > > > > > > > > OK, edited project as requested - ran failing plot and then: > > > > > > > > > > > > MBpro:bin jkt$ ls -l ~/*bin > > > > > > -rw-r--r-- 1 jkt staff 176 Jan 17 20:47 /Users/jkt/Tfm.bin > > > > > > -rw-r--r-- 1 jkt staff 240048 Jan 17 20:47 /Users/jkt/y.bin > > > > > > MBpro:bin jkt$ zip forBillLam.zip ~/*bin > > > > > > adding: Users/jkt/Tfm.bin (deflated 56%) > > > > > > adding: Users/jkt/y.bin (deflated 62%) > > > > > > > > > > > > will send the resulting zip file (forBillLam.zip) to > > > [email protected] > > > > > . > > > > > > > > > > > > Again, doing dbr 1 and running again - the graph was produced > > > correctly > > > > > with no errors, but I'll send, along with the above, file > > > forBillLam2.zip > > > > > comprising the same two files (that are a little different). > > > > > > > > > > > > Thanks for chasing this. > > > > > > > > > > > > - joey > > > > > > > > > > > > > On 2019Jan 17, at 20:04, bill lam <[email protected]> wrote: > > > > > > > > > > > > > > Please edit file addons/graphics/plot/jzplot.ijs > > > > > > > and add the 2 fwrite lines as shown below. > > > > > > > > > > > > > > run plot and let it raise NaN exception. > > > > > > > send the 2 files to our email address > > > > > > > to help us track it down. > > > > > > > > > > > > > > project=: 3 : 0 > > > > > > > '~/y.bin' fwrite~ 3!:1 y > > > > > > > '~/Tfm.bin' fwrite~ 3!:1 Tfm > > > > > > > dat=. }:"1 (y,.1) mp Tfm > > > > > > > dist=. ViewDist-{:"1 dat > > > > > > > ((ViewDist*}:"1 dat)%dist),.dist > > > > > > > ) > > > > > > > > > > > > > > > ---------------------------------------------------------------------- > > > > > > For information about J forums see > > > http://www.jsoftware.com/forums.htm > > > > > > > > > > -- > > > > > regards, > > > > > ==================================================== > > > > > GPG key 1024D/4434BAB3 2008-08-24 > > > > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > > > > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > > > > > > ---------------------------------------------------------------------- > > > > > For information about J forums see > http://www.jsoftware.com/forums.htm > > > > > ---------------------------------------------------------------------- > > > > For information about J forums see > http://www.jsoftware.com/forums.htm > > > > > > -- > > > regards, > > > ==================================================== > > > GPG key 1024D/4434BAB3 2008-08-24 > > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > -- > regards, > ==================================================== > GPG key 1024D/4434BAB3 2008-08-24 > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
