« first day (317 days earlier)      last day (4155 days later) » 
00:00 - 23:0023:00 - 00:00

12:00 AM
@MikeHoneychurch No its popular. It's just not easy. I don't think of python as a particularly... simple... language. Let's blame duck typing.
*Simple to create a link for.
 
@Searke really more complex than R?
 
thanks @Searke, @Gabriel
@acl 40% speed up in 9 vs 8??
 
acl
12:15 AM
@MikeHoneychurch yes, in one particular calculation (the only one I tested actually)
as it involves constructing a matrix (using compiled functions) and then obtains the eigenvectors, I don't know which part is faster (yet)
 
@acl so jealous an NSolve regression is making a lot of my code so slow it is not usable at the moment. Back to v7 for some work. Need to figure out if I can make it run faster. Already miss the new v8 features!
 
acl
@Gabriel v9 made my code faster so far, for reasons I can't understand :)
 
Maybe they've added some matrix compiled support for functions you use?
still makes me very happy to hear that stuff is faster. Need to do more testing on my code, hope it is just the NSolve that is slower!
 
acl
@Gabriel I don't really know. it's a combination of functions compiled to C and matrix eigenvector operations
of course this is a single data point so far
 
would be so sweet if they have some eigensystem C compiler support. I do a lot of that type of thing myself :-)r
 
acl
1:02 AM
@Gabriel it probably uses LAPACK and ARPACK internally so I doubt that would make much difference (except perhaps in passing stuff around). but I don't really know of course
 
@acl good point
 
1:26 AM
Did anyone manage to get CUDALink to work in M9 on OS X?
I 'm wondering if it is a conflict with 8, since CUDAResourcesInformation returns the following:
{{"Name" -> "CUDAResources", "Version" -> "8.0.4.1",
  "BuildNumber" -> "", "Qualifier" -> "OSX",
  "MathematicaVersion" -> "8.0.1+", "SystemID" -> {"MacOSX-x86-64"},
  "Description" -> "{ToolkitVersion -> 4.0, MinimumDriver -> 270.0}",
  "Category" -> "", "Creator" -> "", "Publisher" -> "",
  "Support" -> "", "Internal" -> False,
  "Location" ->
   "/Users/szhorvat/Library/Mathematica/Paclets/Repository/CUDAResources-OSX-8.0.4.1", "Context" -> {}, "Enabled" -> True,
  "Loading" -> Manual, "Hash" -> "e7af8c48be63c5caca6ddda9dc04f92d"}}
I am wondering if there is any special uninstall procedure for paclets or I can just delete that directory
 
acl
1:41 AM
@Szabolcs perhaps try moving it temporarily so that if something breaks you can move it back
 
@acl A simple question about OS X: how do I search the Library/Mathematica directory for *cuda* and get the paths of the results, not their names, in a nicely browseable list? Windows Explorer can do this. Can I use the Finder, or do I need to drop down to Terminal
Hi @Arnoud! Have you heard any complaints about CUDALink not working in 9 if 8 is also installed (and CUDALink has also been used in 8)?
 
acl
@Szabolcs in my case, it's displayed at the bottom of the finder window
 
ah
 
acl
or do you want to copy it to the clipboard?
 
it's okay, I found the file I wanted
apparently there's a file listing all these "paclets"
I wonder if I need to remove it from there
Hum. Removing that directory breaks CUDALink completely, I can't even <<CUDALink` without errors now
I think I'll just remove all configuration. Fortunately it's a new installation.
 
2:02 AM
Too many try to use Matlab for symbolics, and have hard time. Wonder why they suffer like this when they can use Mathematica for that. Poor person here having hard time with 3 by 3 symbolic matrix eigenvalues stackoverflow.com/questions/13624360/…
 
OK, now CUDALink works
 
2:31 AM
@Szabolcs Mine shows 9 for the version
@Szabolcs You can do it via finder... Just go to the directory and type "cuda" in the search bar. Then in the bar underneath that says "Search: This Mac, Mathematica, Shared", click the second one
 
2:49 AM
@rm-rf Does CUDALink work for you now? After I removed the config directory completely and redownloaded the resources, it started to work.
 
@Szabolcs Yeah, it works.
I don't know why it didn't yesterday... I didn't change anything.
It's nice to have a good graphics card and machine... things are so smooth now. With my older laptop, I had to reduce the size to 100x100 and even then, it was choppy
 
3:21 AM
 
Yeah
"What do others feel...?"
 
then vtc :)
 
@rm-rf Sure, I was waiting for some of the serious people to comment before giving a close vote
 
@Rojo hehe, you should be one of those serious people =)
 
@rm-rf Working on it
Honestly, I should one day get to read attentively the rules of stackexchange. I learned to behave, and some rules, by experience and by negative reinforcement of the "serious people"
 
3:34 AM
That would be a complete waste of time
 
3:58 AM
@rm-rf Really?
You people seem to know everything
 
@Rojo Doesn't mean it wasn't a waste of time =)
 
Haha
 
What I really meant was that it isn't a strict rule book that you read from cover to cover... we aren't attorneys/judges who need to know the law thoroughly and apply it by the letter. You mostly "learn" the rules around here by participating regularly in the site and you've been around since day 1, so you're pretty fine there. There'll always be something that no one knows and we either cook up something on the spot or search Meta Stack Overflow long and hard :P
 
Ok, I'll just participate more and eventually you'll all correct my corrections
 
When in doubt, ban for 30 days! Nothing wrong can come of it =)
 
4:24 AM
Haha
 
4:57 AM
Hmm, does someone know, how I can some kind of "request a push" into git repo where I have read access only?
 
@halirutan isn't that called a "pull request"?
I think you'll have to fork it first, push your changes to your repo and send them a pull request
 
Yes, I think too but I'm a bit confused since you usually push to the remote site.
 
@halirutan yes, they pull from yours
you can't push to theirs
 
But what if I have the changes locally? How can they pull from my machine?
 
1 min ago, by rm -rf
I think you'll have to fork it first, push your changes to your repo and send them a pull request
Fork on github
 
5:03 AM
Yes, I see it now. Thanks.
 
5:52 AM
fyi, current version of Mathematica 9 symbols lists in all contexts is here 12000.org/my_notes/compare_mathematica/V9/main.html Still need to generate all function names of each context.
 
 
2 hours later…
7:31 AM
Anyone with mma9 around? What do you get of evaluating this?
CorrelationFunction[ARProcess[{a}, s^2], h]
 
7:46 AM
@Rojo I get this
Version 9 on windows 7
 
I see
@NasserM.Abbasi I get that too
Seems there's an Abs missing
 
 
4 hours later…
12:19 PM
@JohnFultz When you are around, can you maybe have a look at this: mathematica.stackexchange.com/q/15245/187
 
fyi, just finished making table of all symbols in all contexts for version 9. useful, to allow one to search for a symbol in all of version 9 from one page. 12000.org/my_notes/compare_mathematica/V9/main.html over 7,000 symbols. Added Developer` and Internal` contexts also and all standard packages
 
acl
12:47 PM
seems like most people don't use the template autocompletion stuff, since I seem to be one of the few who noticed (to me it was immediately obvious because I use it constantly)
also is this a duplicate or am I missing something?
 
 
2 hours later…
2:45 PM
Can someone try to search for RLink in the DocuCenter and then click on RLink (RLink Guide)? It ends in and empty notebook here.
 
acl
2:56 PM
@halirutan it goes to RLink/guide/RLink which is not empty here
 
If I copy/paste your link then I get (as when I click) an empty notebook with the title temporary ;-)
Very nice.
 
acl
on linux?
 
Yes
 
acl
looks like someone forgot to update the docs...
 
Yes. Btw, everything RLink related is missing here.
 
2:58 PM
Hello guys.
 
Hi Leonid.
 
acl
speaking of the devil...
 
Dropped in for a minute. Looks like the timing is right )
@halirutan What platform are you on?
 
Ubuntu
Linux-x86-64
@LeonidShifrin Can you give a short status-update on the formatter?
 
Could you also tell which version of Ubuntu?
 
3:00 PM
Yes, it's 12.04 with Gnome
 
@halirutan Thanks. Re: formatter - I did some work there, but did not commit yet, it is not stable. I probably could do some quick update to make the tabification customizable, so that we can start using it for SE. That should be easy to do.
 
@LeonidShifrin But the formatter is on Git, right? Why don't you make a branch?
@LeonidShifrin The thing is, I (1) really would like to know what you plan to do and (2) help, if I can be of any help.
 
@halirutan Frankly, my current priorities are to launch the Github-based code exchange stuff first, for a number of reasons. I think that we really need a mechanism to start exhanging code, that seems more important than refining the formatter, which is a next thing.
@halirutan Yes, I will make a branch, planned to do that on weekend anyway. Things were a bit hectic recently
 
@LeonidShifrin What is the Github-based code exchange stuff?
 
@halirutan Re: things to do: for formatter, it needs more than just bug-fixes, it needs serious refactoring. I want to make a DSL so that people will be able to write their own formatting templates
 
3:06 PM
@LeonidShifrin I remember we talked about this. But since, I'm sure, you have concrete ideas about this, you have to move first ;-)
 
@halirutan Re: code-echange I am working on a set of tools which would allow people to publish code easily on a small scale from within M, and have versioning based on Github gists without the need to actually learn Git
 
Later if I understand things, I can test and maybe bugfix.
@LeonidShifrin Ahh, ok. But this project is not on your Git-site..
 
@halirutan Once I do the core refactoring for the formatter, it will be much easier to collaborate on it. Right now, while the core formatter design seems fine, it is stil half-baked
 
@LeonidShifrin Do you plan to rely on the box-structure only?
 
@halirutan Not yet, yes. I implemented a Github gist M API already, and hope to get the rest done soon.
 
3:09 PM
@LeonidShifrin We had the Futz here who showed an interface to the M-parser. You have seen this?
 
@halirutan Re: box structure no, I already have teh pure string version, although it does go to the boxes. But boxes are harder, so once boxes are fine, strings are more or less automatic
@halirutan Re: parser - no, I have not. Couldyou give a link?
 
I can give you code
 fultzTokenize[t_String]:=Cases[MathLink`CallFrontEnd[
   FrontEnd`UndocumentedTestFEParserPacket[t, False]], _String, Infinity]
And my question about that was mathematica.stackexchange.com/q/13094/187
 
@halirutan Thanks! I think I saw the mentions of this in chat, but missed the rest.
 
@LeonidShifrin Of course tokenizer not parser, sorry.
 
@halirutan Thanks, that's good to know.
@halirutan Sorry, would chat more, but gtg now. Will come back later today.
 
3:13 PM
@LeonidShifrin OK, so if you have things set up, you can ping me. Just wanted to tell you that I'm still very interested in this. Bye.
 
@halirutan I will definitely let you know. We need to combine forces if we want to get somewhere, I will definitely appreciate your help.
@halirutan See you later then
 
@ArnoudBuzing Arnoud, do you know whether one of the guys from WRI which are often around use Linux? As I see this, we have you, Andy, Brett, John the Futz Fultz, Ruebenkoe
 
@halirutan sorry for not replying you yet, with all these lectures I had to teach and getting excited about v9 I didn't manage to get to it yet
 
@Szabolcs Yes, I saw your messages in chat that you are very busy and cannot take your hands off M ;-)
 
just got up
 
3:19 PM
@Szabolcs, you missed Leonid.. He was here minutes ago
19 mins ago, by halirutan
@LeonidShifrin Can you give a short status-update on the formatter?
@Szabolcs What time is it on your part of the earth?
 
I'll run some errands then take a look at the palette. Yes I'm reading the log now.
@halirutan 10:20
 
@Szabolcs Oh, in this case you can skip over the last part of my email.
 
@halirutan If I were still in Europe ...
 
3:39 PM
Is there some function that lets me find all (at least most) roots in a bounded region of a real-valued function of several variables besides NSolve? (NSolve doesn't even try, it stays unevaluated.)
 
@ssch maybe Reduce?
 
that also stays unevaluated
 
@ssch sounds like you are going to need to use FindRoot ... with gridded initial conditions
 
yea, FindRoot has a bit odd error mesage, FindRoot[x+y, {x,y}] gives error about number of equations and variables while: FindRoot[{x + y, 0.}, {{x, 0}, {y, 0}}] runs just fine
seems like the sane default would be to just pad with zeros if the algorithms need it
 
@ssch This Q/A here is connected to what you try do achieve. Have you seen it?
 
3:45 PM
no, I'll check it out
 
@halirutan thanks for the link! Really nice
 
@Gabriel I always like to advertise my answers ;-)
 
when they are sweet like that you should!
 
@halirutan :D that's great
 
@ssch All the answers (not only mine) should give you an idea how to find seeding points for your FindRoot call.
 
acl
4:00 PM
@ssch 2d or higher?
 
acl 2d
 
acl
4:16 PM
@ssch ok then the question/answers halirutan mentioned do the job
 
@acl Well now you got me interested in their generalizations, I wonder how many image manipulation functions there are for Image3D :)
 
acl
5:05 PM
hm typing all caps without a caps lock key is not good for the tendons
(I guess I am using this chat thing as a place where I can vent random frustrations)
 
5:20 PM
@acl Why are you typing in all caps?
 
acl
@rm-rf comments in a tex manuscript (which will be diffed so can't use colour)
 
@acl emacs doesn't have a convenient toUppercase shortcut?
 
acl
@rm-rf I am using sublime text, and try to ignore not being able to see inline-compiled equations
still my office monitor is large enough that I have the tex and pdf next to each other so it's worable
 
@acl I didn't know auctex did inline compilation (I'm assuming you mean in the editor)...
 
acl
it does
I am pretty sure auctex is far and away the most sophisticated latex environment around
no comparison whatsoever to anything I've tried in terms of what it can do
 
5:24 PM
Perhaps the only reason for me to try to learn emacs...
I do like vimlatex though... I'm fairly comfortable with visualizing the layout and equations in my head, and as you said, having a large monitor helps
 
acl
@rm-rf judging from online and offline discussions with lots of people, I must be the only person in the world who's incapable of visualising my equations from latex
 
lol
Hmm... there's an auctex plugin for vim
 
acl
actually it's this bit you want
 
@rm-rf vim-latex is pretty awesome as well. Don't know how it compares to auctex, but it is awesome
 
I want to give an update on the font crashes (BSOD) that various people have reported here.
 
5:29 PM
@Gabriel Yeah, that's what I've been using for quite a while. The only drawback of that is a general vim drawback in that you can't do anything else while it compiles
 
First of all, I'd like to apologize to anyone affected. We had an extensive prerelease trial period where this problem did not turn up and we are still examining why this is the case.
 
@ArnoudBuzing you guys have been heros in my mind for fixing the issue promptly so no hard feelings here! Good luck with figuring out the issue
 
Hi @arnoud. I just got in. No problems, everything seems to work fine now. Partly my own fault too. Should have closed v8.
 
@SjoerdC.deVries so true ... guess I realize how much I panic when I don't have an active mma environment open ;-)
 
Second, Technical Support now has a simple binary which you can run in administrator mode to address this issue without reboots or reinstallations.
This binary should only be run by people who are affected (if you're not affected, it's essentially a no-op).
It will go into your Windows registry and correct the keys so they point to the correct fonts.
 
5:37 PM
@ArnoudBuzing I guess I don't have to run that, having reinstalled everything, or does it do more of a clean-up?
 
We're still debating to pull the Windows version from the portal until we can provide a new full version with this fix incorporated.
For this it is important to understand (and this community can help a lot) how many people were affected and how many people (Windows users) were not affected by this.
 
@ArnoudBuzing probably a good idea to pull it ... I know how confused/angry this would make coworkers that are less technically savy
 
@SjoerdC.deVries I think you should be OK now.
 
@ArnoudBuzing Would a warning not be sufficient?
 
@ArnoudBuzing There was an answer to that effect:
5
A: Version 9 NoteFont2 Self-Test Error on Windows 7 64-bit

WReachI saw almost exactly the same problem when I first installed Mathematica version 8 on a machine that was already running version 7. I don't remember what I did to fix it back then (should have written it down), but it involved a lot of uninstallation, re-installation, reboots, and miscellaneous ...

 
5:43 PM
@Gabriel We're making that decision today. But the more information we have about this problem, the better it is. At the moment we have precise information on who was affected, but no information on Windows users that were unaffected.
If you have any such information, I kindly request to mention it here or email me (arnoudb@wolfram.com).
 
@ArnoudBuzing sadly I was the only one who tried it in my lab ... scared the rest off
 
Also, if you were affected it would be very useful to know which versions of Mathematica you had installed previously. I think most of you have either Mathematica 8 or Mathematica 7, but if older versions existed on the machine that would be good to know.
So far we have reason to believe all fresh installations of Mathematica 9 are ok and that it is the interaction with previous installations that are causing the problem.
@Gabriel I understand.
 
@ArnoudBuzing I installed 9 on a Windows 7 x64 machine where I have 8 installed, but I didn't experience any BSOD... Is there a test I can do to make it happen (if it's not too dangerous :).
 
@AndrewMoylan Did this machine have older versions of Mathematica installed, or only Mathematica 8?
 
Only 8.
Is this the font-related issue with Esc-pw-Esc?
(I showed up in chat room short on context sorry.)
@ArnoudBuzing If so, I evaluated Piecewise[{{0, x < 10}, {1, True}}] and got no self-test errors.
 
5:57 PM
@AndrewMoylan I am talking specifically about the BSOD problem people have been reported after installing and running Mathematica 9.
 
@ArnoudBuzing OK. Well, no BSODs for me. I had & have 8 installed with all default preferences, except I did enable version-specific preferences before installing 9.
 
@AndrewMoylan open the writting assistant and click the "
Font..." button ... crashed always for me ;-)
 
@Gabriel Thanks, I'll try it... OK I tried it just now and it worked.
 
What does CUDAFluidDynamics[] really do? From the docs, it looks like a demo of fluid mechanics using CUDA, but if I call it on my machine, I don't get the neat vortices that is shown in the docs. Changing options doesn't help either...
 
@rm-rf Have you clicked and dragged in the dotted area?
 
6:01 PM
Yes, it didn't seem to change anything... let me try again
still the same... doesn't seem to register the mouse click
Ok, restarted mma and now it works when dragging
 
Would there be any reason that having both v8 and v9 installed could cause problems? Seems like v9 has font issues with the wolfram alpha integration now :-(
but I need to have v8 installed as a bunch of my old notebooks don't work correctly in v9
 
@Gabriel What sort of issues? (I run V8 and V9 together all the time. There should not be any issues)
 
okay ... I will look into it ...
currently when I do the leading "=" to get the wolfram alpha cell, it gives me a tiny red box ... suggesting I imagine it can't find the image
 
@Gabriel Mathematica 9 uses a font character for this. You can see the difference between Mathematica 8 and 9 in this screen shot: i.imgur.com/7Jbl8.png
 
@ArnoudBuzing okay so it suggest I still have some left over font problems ... I installed v8 after v9 wonder if it overwrote one of the new font packages
 
6:13 PM
Note how Mathematica 8 has a bitmap which becomes grainy when magnified. Mathematica 9 uses a font glyph which scales better
 
yep looks great ... I don't see the later at all ... totally a missing font issue
 
Hm, that's interesting ...
 
Once I finish some work today ... I will do a clean install again ... I can send you guys an email to see if the issue still persists. I will do it in the same order to see if I get the font in v9 and then lose it after I install v8
 
Does anyone have an Mma highlighter for sublime text? @acl @rm-rf ?
 
acl
@Szabolcs you can use the one for textmate
(the highlighting part works well)
 
6:18 PM
@acl Just copy to the packages directory, right?
I only need the highlighting for the moment
 
Technical Support has posted a KnowledgeBase article for the Blue Screen: support.wolfram.com/kb/11160
 
acl
I don't remember if the textmate bundle had more structure, but more or less yes
 
OK, great! Highlighting works.
 
acl
@Szabolcs but cmr-R doesn't, or didn't for me
 
@Rojo Why do you think so?
 
6:26 PM
@ArnoudBuzing The title says, "Windows Crashes with a Blue Screen after Installing Windows", is the last word supposed to be there?
 
Speaking of fonts, what do people think of the different font spacing in M9?
 
@Szabolcs Thanks, this should be fixed (please refresh your browser page).
 
@AndrewMoylan It looks like the letters are actually bigger (wider) in the second screenshot. (When you increase the font size in Windows, sometimes they only grow horizontally by a pixel before they grow vertically.)
But it's very subtle, difficult to tell when looking at a single character.
 
@Szabolcs I suspected it might be the character size too, but after looking at individual pixels with anti-aliasing off, it appears to me to be an explicit decision to increase the spacing:
 
In 9 they seem to be 13 point (not shown with a checkbox in the menu), while in 8 they're 12 point. If you set them to 12 point in 9 too, they'll look the same.
 
6:35 PM
Hmm so they are ... perhaps it's just a kerning change in 12 point that looks like an overall spacing change.
Anyway, I prefer the new larger size. I think it makes lots of sense considering high pixel densities.
 
I too prefer the larger one.
 
(The first of many adaptations to very high pixel densities in the future of course.)
 
I just wish 9 had HiDPI mode ...
 
Would be lovely.
 
I asked support yesterday, they said "currently we have no estimate of when it will be available"
 
6:38 PM
How amazing will some of the antialiased smoothed 3D graphics look?! I'm thinking of the nice exampels like Plot3D[Im[ArcSin[(x + I y)^4]], {x, -2, 2}, {y, -2, 2}, Mesh -> None,
PlotStyle -> Directive[Yellow, Specularity[White, 20], Opacity[0.8]],
ExclusionsStyle -> {None, Red}]
Of course, when HiDPI comes, the default PlotPoints may need to be revised ... makes sense to do that in parallel with multithreading all those function evaluations perhaps.
 
acl
@Szabolcs well at least they answered; I asked why autocomplete doesn't work and got no answer. I guess they're overloaded anyway (or maybe I should have switched from the trial to the premier license to elicit a response)
 
Hi everybody!
@acl @Szabolcs how is the testing going? can M9 quietly coexists with M8?
 
acl
6:54 PM
@magma (I'm on os x). I did not have any serious problems (but look at this ).
 
@IstvánZachar No failure to see ?
 
@SjoerdC.deVries Hello
 
@Rojo Howdy
System up gain?
 
Because the correlation function should be even, it's the expectation of a product
 
7:10 PM
Try odd lags
 
Furthermore, in the docs there are examples where it shows properly
until I reevaluate
Yes, my system is up and all working perfectly now
 
@Rojo Try a numerical example:
CorrelationFunction[
RandomFunction[ARProcess[{-0.5}, 1], {1, 1000}]["Paths"][[1]], 3]
-0.1292048359
predicted: -0.125
So, can be negative, should be negative
 
Doesn't mean there isn't a bug, right?
Wait
That's not what I mean
The correlation function can have negative values
I wasn't clear, sorry
 
What did you mean then?
 
With this input
CorrelationFunction[ARProcess[{a}, s^2], h]
I was expecting this output
a^Abs[h]
instead of a^h
 
7:16 PM
Thanks @acl, that's why I was asking. Frankly I do not see any good reason for downloading the trial (which is limited in Export,ect anyway). Better to get directly the real
McCoy :-)
 
OK, thought you were talking about Abs[a]^h
 
acl
@magma it's the same executable
 
Ok
 
@acl anyway, the final M9 clashes with M8 or it is not known/tested yet?
 
7:19 PM
@Rojo but negative h's don't make sense
 
Why not
I mean, it's redundant because it's weakly stationary, but it makes sense
 
acl
@magma no problems as far as I can tell
 
@acl, great , thank you. Bye to all
 
acl
@SjoerdC.deVries why not
 
7:23 PM
Yeah, for a list
CorrelationFunction[ARProcess[{a}, s^2], -10]
gives something different than
CorrelationFunction[ARProcess[{a}, s^2], t] /. t -> -10
and, from the Details:
CorrelationFunction of the process proc is the CovarianceFunction c normalized by the outer product of the standard deviation function [Sigma] at times s and t:
and in CovarianceFunction, Expectation[(x[s]-[Mu][s])(x[t]-[Mu][t])]
Humm
 
@Sascha Hmm, on this machine here I get the following timings. Your method:
 
Perhaps there's some idea of processes starting at time 0, who knows. But it is at least suspicious that in the Scope part of the docs, that same example gives a^Abs@h
 
acl
@Rojo suspicious yes :)
 
@magma On OS X CUDALink didn't work in v9 until I removed the files v8 has downloaded for CUDALink. After that it was fine.
 
@Rojo I guess you're right
 
7:31 PM
@halirutan I just realized that one problem with a pre-generated palette is that if it is made using 9, 8 will complain that the notebook might be incompatible.
 
@Rojo Same happens with the first example in Scope: CorrelationFunction[ARProcess[{a}, [Sigma]^2], s, t]
it evaluates to a different value as the one that's originally there
 
@Szabolcs Yes, I know. I always have many M version on my computer and it complains all the time.
You could maybe copy the palette to the install-dir so that only the appropriate version sees it.
@Szabolcs Have you tried this?
 
In the morning I was trying to figure out how pull requests work :)
Came back home now, but github is down now
 
@SjoerdC.deVries Nice chance to test the last button on the suggestion bar
 
acl
@Szabolcs doesn't in my case
(for my own palettes at least)
strange actually
 
7:35 PM
@Rojo I don't think it's meant for that
 
Nope
 
@Szabolcs Last night, I was reading this here. Now I almost know how things work ;-)
 
@SjoerdC.deVries It's for suggestions about the suggestions bar
Now I know
I thought it was a "chat with Stephen" button
It just opens up your email client with an email structure ready to go
 
7:51 PM
@Rojo It still can be... just change pfeedback@ to s.wolfram@ ;)
 
I meant Hawking
 
8:09 PM
When I write up an answer like "The solution to your problem is easy: just use version 9" will I get upvotes for that?
 
8:36 PM
try it
 
8:53 PM
No BSOD here, but it is a little unstable. Mathematica crashed 2 or 3 times during the day; sometimes freezes for 5 to 10 seconds (like program not responding). Is this familiar to any of you? (XP SP3)
@rm-rf CudaFluidDynamics is just a toy demo of some sort of free mesh CFD (I imagine like SPH). You are suposed to see a similar image to the one of the documentation center, at first with all points static; when you move your mouse over it (don't recall if clicking) the points start moving
 
9:15 PM
I wished we had a cuda code like dualSPHysics or similar (fluid inlet would be great; not the periodic stuff) integrated into mathematica. Also, mathematica as an integration tool would be quite good also to manage inporting 3D models, launching meshing tools (for fluids; not the tetgen already linked), generating config files for codes like in OpenFoam, and eventualy analysing the results (although there are good tools on the market for that)
 
@SjoerdC.deVries Arnoud has kindly explained the issue behind the pinked-out graphics (those, that you don't see anymore) here chat.stackexchange.com/transcript/message/7058551#7058551
 
We are going to disable Mathematica 9 for Windows downloads from the portal. We are working on having a fixed version up on Monday.
 
9:32 PM
@ArnoudBuzing are the instabilities I'm suffering related, or known?
(I know that my description is vague...)
 
@P.Fonseca I don't think that is related. It would be good to report if you are seeing something specific ... It would be good if Technical Support can help diagnose this.
 
@P.Fonseca If you do CUDAFluidDynamics[NumberOfParticles -> 17000], then it automatically starts moving (I wonder if there are preset forcings). Similar results for 16, 17, 18k (and inbetween numbers) and at 19k, it breaks down... 15k points seem to be the upper limit for static points. I can't pump it up to 20k. If I set to 20k, I can't get it to work again (for a lower number) without restarting the kerne;
 
@rm-rf I don't have CUDA here, but will let you know later
@ArnoudBuzing I still can't repeat the problem in a systematic way. It has happened several times when on the documentation center first page, and it seems to be more related with dynamics. But things like shift return on the simplest Plot command, and waiting for more than 20 seconds have happened (I actually canceled before the "end"). And yet, launching exactly the same input 5 seconds later, outputs instantly. So, I can only classify as unstable, but can't help much on finding the reason.
(haven't used M8 a lot, but it seems OK)
 
9:56 PM
@rm-rf In this answer of yours, if instead of commenting out you just move the v9 key to the second line and you can run both without changing the file in between, can you confirm and if it works for you update the post?
 
@rm-rf on a second run of the function, they always keep moving for me
I have to restart the kernel to start with a static configuration. If I do, even 25,000 works fine
30000 breaks down though
 
there was a question about citations so I was wandering if anyone knows if the citation support in V9 is the same on Macs and Windows. In v8 Macs got the documentation but didn't get the functionality.
 
@ssch I tried that a couple of days ago... it didn't work. Does it work for you?
@Szabolcs This is what I get for 20k
 
@rm-rf Yes, haven't dared try running them simultaneously yet, but quitting in between works
on linux64 fedora core 16
 
@ssch Ah... hmm. I haven't tried it one at a time. I think I tried it simultaneously. I'll give it a go again later in the day, after saving all my work :D
 
10:10 PM
:D
 
10:21 PM
Is it possible to have the CUDA paclet installed for both v8 and v9?
CUDAResourcesInstall[] trashes whatever version was there before
 
@MikeHoneychurch The support for citations in Mathematica 9 is the same as Mathematica 8
bibtech on Mac and Windows. EndNote on Windows only.
 
@Searke thank you.
...more promising is that it looks like AuthorTools has been updated? Is that correct. Basing this on comparing the online V9 docs to my V8 docs
 
10:36 PM
@ssch I don't know, but I find it even weird, that v9 does not recognize when CUDA is installed for version 8. It just returns False for CUDAQ and messages for all other functions.
 
@MikeHoneychurch What makes you think AuthorTools has been updated? I hadn't heard about this
 
@Searke it was a question not a statement. In V8 an old version of author tools exists but you won't get a hit if you type "AuthorTools" into the help guide, i.e. undocumented. Whereas in V9: reference.wolfram.com/mathematica/AuthorTools/guide/…
...so i am assuming the package has been updated ???
 
@MikeHoneychurch I don't believe it has.
 
...but now noticing a lot of "page not found" pages when I click on links so maybe this documentation appears by accident -- it got captured in some sort of automatic build of the docs when it actually is supposed to be excluded (if so this remains disappointing)
 
That is likely the reason it is there.
 
00:00 - 23:0023:00 - 00:00

« first day (317 days earlier)      last day (4155 days later) »