[sage-devel] Re: Sage virtual appliance (VirtualBox)
On May 14, 2:07 pm, Volker Braun wrote: > The virtual machine is really only useful on modern hardware with at > least 4GB ram and hardware virtualization support (Intel VT-x or AMD-V). My personal experience differs. I have run windows VMware guests with 512 MB of memory on top of old hardware (no VT-x/AMD-V) that had only 1 GB of memory in total, and it suited my needs at the time for experimenting with software. I think it would be nice if our Sage VM appliance could run on a wide variety of hardware, much as Sage itself does not require high-end machines to work. -- Kelvin -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] solve an algebraic expression
Hi again list,
This time I come with a problem of solving an algebraic expression, the
solution has the variable x on it!
sage: reset()
sage: var('x')
sage: var('mp', latex_name=r"m_\pi")
sage: var('me', latex_name=r"m_e")
sage: f(x) = mp - sqrt(x^2 + me^2) - x
sage: solve(f(x)==0, x)
[x == mp - sqrt(me^2 + x^2)]
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[sage-devel] Integration of dirac_delta
Hi group! I was trying to integrate a dirac_delta, but SAGE cannot do so... weird thing, 'cause that `function' is defined, and in only make sense as part of an integration. Cheers. Dox. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
On May 14, 3:07 pm, Volker Braun wrote: > I don't think that running a virtual machine on yesteryear's hardware is a > viable option. Yes you can make it boot but it'll be too slow for productive > use. The virtual machine is really only useful on modern hardware with at > least 4GB ram and hardware virtualization support (Intel VT-x or AMD-V). If > you have the hardware support then you supposedly can run 64-bit guests on > 32-bit hosts, though I haven't tried. What do you mean here by "productive use"? If you are computing numerous high-dimensional Mori cones, you will probably work on some Unix server anyway ;-) While if you are an undergrad with an oldish Windows computer (especially in less financially fortunate countries), plotting sines and experimenting with Newton's method for a cubic - I don't think that there will be an issue with not having enough cores/ memory. Maybe 512Mb is too harsh and will interfere with normal working of the guest operating system, but 1Gb is certainly enough (if I recall correctly, student version of MAGMA is limited to 100Mb only) and it is easy to increase if necessary. It is also just as easy to decrease it, but the error message that I got didn't say anything about memory and if it was my first encounter with virtual machines (which is likely to be the case for many potential users), I wouldn't know what to do. I am pretty sure that <=2Gb machines are still quite common around the world and on a 2-core 4Gb 2009-laptop it still was more comfortable for me to use 1 core for the guest system and 1.5Gb memory. On an unrelated note, the 2004-laptop (with an awesome screen) used in the experiment is my primary machine for Sage development and SageTeXing and it works great, although for these purposes I boot it directly into Linux rather than messing with virtual machines. That's the ultimate form of recycling - just continue using it since it is not broken and works fine ;-) For CPU/memory/time demanding computations there are perfect shared servers that beat any personal setup! -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
I don't think that running a virtual machine on yesteryear's hardware is a viable option. Yes you can make it boot but it'll be too slow for productive use. The virtual machine is really only useful on modern hardware with at least 4GB ram and hardware virtualization support (Intel VT-x or AMD-V). If you have the hardware support then you supposedly can run 64-bit guests on 32-bit hosts, though I haven't tried. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
The OVA file format is just a tar archive of a 2-file OVF format. VMware might need you to place the contained files in the same directory. [vbraun@volker-desktop data]$ tar tf Sage-4.7.rc2.ova Sage-4.7.rc2.ovf Sage-4.7.rc2-disk1.vmdk The VM is always going to be painful to download with your modem. We can certainly hand-craft a Fedora install that is even smaller or manually delete/strip/dedup the Sage install. But then that'll just cause problems when we upgrade the base Fedora install or if Sage moves files around. Right now the compressed virtual machine is 1.4GB. Thats not excessive nowadays. The contained virtual hdd is actually 7GB. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
I have tried to run it on my "desktop notebook": Athlon 64 3000 (1.8GHz, 1 core), 2 Gb RAM (maximum possible), Windows XP Professional 32-bit. I was pretty sure it will not run given the guest memory size, but I got the following, which does not refer to memory: Failed to open a session for the virtual machine Sage 4.7.rc2 AMD-V is not available. (VERR_SVM_NO_SYM). Unknown error creating VM (VERR_SVM_NO_SYM). Then I changed guest RAM to 1Gb. It started and showed during boot that it requires 64-bit and detected only 32. I think that the machine should be configured to run "as is" on as many computers, including old ones, as possible. Perhaps 1 core, 512Mb RAM, 32-bit should be the default and installation instructions can mention that you can easily adjust the first two parameters according to your particular hardware, but it is optional. As for 32/64 I think the best option is to have two images, since with automatic script it should not be a problem to maintain both. Thank you, Andrey -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
> > > probably VMWare requires a slightly different directory layout: > > > http://gvaro.wordpress.com/2010/05/07/vmware-player-error-“failed-to-open- > > > virtual-machine-failed-to-query-source-for-information-”/ > > > > > > (don't know if Bing (ahem...) can find this link though :-)) That was one of the first hits I got. :-P But it does not help me. In this case, everything is contained in a single OVA file. Why would the location of an imported applicance make a difference? > > Thanks for the suggestions. I haven't tried to make a hand-crafted > > absolutely minimal Linux install because that would be a hassle to maintain. I wasn't saying that manually tweaking is better; that would defeat the whole point of the "automated" script! I was wondering whether Fedora allows you to (automatically) install an even more reduced base system than what you have right now. Or maybe you can specify which packages you want to exclude at install time. > > I agree that sendmail can be turned off. I like sshd, though, because its a > > nice way to interact with the virtual machine. You can scp files in/out, for > > example. By default the VM doesn't punch the ssh port through its NAT for > > security, but that can be easily done in the VirtualBox settings. I think this is an interesting debate. I see the whole virtual machine solution as primarily targeting Windows, and most Windows users do not have ssh or even know about it. Not to say that Sage-on-Windows users are dumb, but I think that if such a user knows enough about ssh to want to use it, he/she can install it manually. On the other hand, instructions on transferring files in/out of VMs using the pre- installed sshd are more likely to confuse users than to help them. I also figure that such motivated/knowledgeable users are more likely to install and configure their own VMs and just build Sage from source. I would like to keep things lean because long boot times and gigantic disk images (about 4.5 GB uncompressed, and the downloading took over 2 hours on my internet connection) could be annoying for users who are trying to take the shortest possible route to getting Sage running on Windows. > Maybe some ideas from the sage-lithe VM prototype (407 > MB)http://sage.math.washington.edu/home/emil/sagelithe/vm-sage-lithe-a1.zip > could be utilized. In itself this version is not optimized yet (e.g. > full xorg and xvesa) > regards > emil Was this assembled by hand or by a script? -- Kelvin -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: LaTeX code to Sage expression?
It is possible to define a a program that will take a single language
and produce from it either TeX, Lisp, Sage, Mathematica, Maple,
Maxima, MathML, etc.
That does not solve the problem of taking some random TeX formula, not
using that language of macros etc, and converting it into a CAS
formula.
The newer version of Gradshteyn has, as its base, all of the formulas
in such a language, and there is a translator into some CAS. I think
the translator is written in TeX.
This was done by hand, and using it makes it rather simple to produce
(sort of) code in any CAS. See the paper for why I say "sort of".
I don't have the code for Caspi's project; I've asked him to post it
though.
As for whether more recent work has surpassed it... I think that a
program that works in 1997 might still work just fine. And the design
is probably OK too. Reminds me of the quip..
"Algol 60 was not only an improvement on its predecessors, but also
on nearly all its successors.
-- C. A. R. Hoare"
Now if you want to switch back and forth, starting with the CAS, then
it is quite easy. You embed the CAS code into the TeX so that
translating back is simply extracting a comment.
e.g.
\int_a^bf(x)dx % maxima% integrate(f(x),x,a,b)
RJF
On May 14, 9:23 am, daly wrote:
> Since TeX is turing complete and allows macros,
> would it be possible to create a set of macros
> that are not ambiguous? For instance, an integral
> macro that specifies the limits and differential
> variable?
>
> \integrate{0}{\infty}{r}{sin(\theta)}
>
> In this case it seems to me that the latex macros
> would closely approximate the actual linear input
> to the CAS.
>
> Tim Daly
>
>
>
>
>
>
>
> On Sat, 2011-05-14 at 08:25 -0700, rjf wrote:
> > Look at
> >http://moralfiber.org/eylon/berkeley/cs282/
> > to see a paper,
> > Parsing Mathematics Typeset in TeX
> > that successfully parsed many many formulas
> > from Gradshteyn and Rhyzik, a table of integrals.
>
> > The result was Lisp, which presumably could be Maxima.
> > If you have a result in Maxima, presumably Sage can make sense of it.
>
> > Or the same design can directly produce whatever Sage-speak you had in
> > mind.
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[sage-devel] Re: Sage virtual appliance (VirtualBox)
> Thanks for the suggestions. I haven't tried to make a hand-crafted > absolutely minimal Linux install because that would be a hassle to maintain. Having a automated script to produce virtual machine images is a huge step in the right direction. Personally I think size (1.4 GB) could be optimized but it was pointed out in previous discussions that size is not a major concern for mainstream development. On the other hand with virtual machines resources of the host are split. Maybe some ideas from the sage-lithe VM prototype (407 MB) http://sage.math.washington.edu/home/emil/sagelithe/vm-sage-lithe-a1.zip could be utilized. In itself this version is not optimized yet (e.g. full xorg and xvesa) regards emil -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
Re: [sage-devel] Re: LaTeX code to Sage expression?
Since TeX is turing complete and allows macros,
would it be possible to create a set of macros
that are not ambiguous? For instance, an integral
macro that specifies the limits and differential
variable?
\integrate{0}{\infty}{r}{sin(\theta)}
In this case it seems to me that the latex macros
would closely approximate the actual linear input
to the CAS.
Tim Daly
On Sat, 2011-05-14 at 08:25 -0700, rjf wrote:
> Look at
> http://moralfiber.org/eylon/berkeley/cs282/
> to see a paper,
> Parsing Mathematics Typeset in TeX
> that successfully parsed many many formulas
> from Gradshteyn and Rhyzik, a table of integrals.
>
> The result was Lisp, which presumably could be Maxima.
> If you have a result in Maxima, presumably Sage can make sense of it.
>
> Or the same design can directly produce whatever Sage-speak you had in
> mind.
>
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Re: [sage-devel] Re: LaTeX code to Sage expression?
> http://moralfiber.org/eylon/berkeley/cs282/
Thank you, this was an interesting read, which motivates me to revise
my current approach slightly. I think that I need to keep more
information in a first pass, in order to correctly handle subscripts
and superscripts. I still don't know how to place the closing
parenthesis at the right place in constructions such as \sin a \, bc.
A difficult problem, as you mention.
I think that the first two passes (expanding macros and removing
spurious left braces) should be done within TeX for more robustness:
it is not true that only \ and { and } matter. Perhaps some of the
other steps may be done in TeX as well, although having a dictionary
of symbols would not be too easy within TeX.
The study seems quite old (1997). Are you aware of more recent developpments?
Regards,
Bruno
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[sage-devel] Re: LaTeX code to Sage expression?
On 5/14/11 10:25 AM, rjf wrote: Look at http://moralfiber.org/eylon/berkeley/cs282/ to see a paper, Parsing Mathematics Typeset in TeX that successfully parsed many many formulas from Gradshteyn and Rhyzik, a table of integrals. The result was Lisp, which presumably could be Maxima. If you have a result in Maxima, presumably Sage can make sense of it. Or the same design can directly produce whatever Sage-speak you had in mind. Is there code to go with that paper somewhere? It certainly looks interesting! Jason -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: aut codes patch
On May 13, 7:18 pm, Thomas Feulner wrote: > Hi, > > On 7 Mai, 07:04, Dima Pasechnik wrote: > > > > > > > On May 6, 9:12 pm, David Joyner wrote: > > > > Hi: > > > > The contribution at #10153 byThomasFeulneris huge and, > > > IMHO, important. It basically generalizes what Robert Miller did for > > > automorphisms of codes in the binary case to the non-binary > > > case. Robert himself has run the valgrind on the doctests for #10153 > > > and says that none of the doctests in the code_can.pyx file seem to be > > > causing > > > any memory leaks. > > > > Is it possible for others to look at > > > http://trac.sagemath.org/sage_trac/ticket/10153 > > > and comment on it? I know reviewing something so immense > > > is very time consuming but maybe with more people > > > looking at it, the workload can be divided up in a > > > reasonable way? > > > It is 400Kb (!) of mostly C++ code. > > Few parts seem to come directly from Boost (and probably can be > > replaced with Sage's Boost subset, or > > placed there is needed), some parts from an apparently > > large collection of routines written by Ralf Gugisch. > > The files fdstream.hpp does not come directly from Boost. Something > equivalent within Boost seems to be boost/iostreams/device/ > file_descriptor.hpp. I think, this is not contained in Sage's standard > Boost. Should I make my code depend on the optional package > boost_1_34_1.spkg? no harm in this... Eventually one can add the needed things to the "standard" Sage part of Boost. > > I need this class in order to use pipes for some 'conversation' with > GAP. Maybe someone knows some better way? well, there is a Sage-GAP interface available (not too fast though, the better one is in the works). Do you mean to say that your package has its own way to communicate with GAP? > > The files written by Ralf Gugisch do not contain the stuff on oriented > matroids. They just provide permutation groups and their action on STL > containers and a base class for building up a backtrack tree. > Therefore, I think, there is no reason for factoring out these files? It looks like a sufficiently interesting piece of functionality on its own. Which looks like a jolly valid reason to me to factor it out. Dmitrii > > > > > A minor detail, that can potentially cause a headache, is that the > > line endings are inconsistent across the patch (Unix/Windows). > > This will be changed, I did not realize that I have mixed them up. > > > > > This certainly can become an experimental package, IMHO. > > Thomas > > > > > > > Dima > > > > BTW,Thomashas a version of his program which calls > > > MAGMA:http://www.algorithm.uni-bayreuth.de/en/research/Coding_Theory/index > > > > - David Joyner -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: LaTeX code to Sage expression?
Look at http://moralfiber.org/eylon/berkeley/cs282/ to see a paper, Parsing Mathematics Typeset in TeX that successfully parsed many many formulas from Gradshteyn and Rhyzik, a table of integrals. The result was Lisp, which presumably could be Maxima. If you have a result in Maxima, presumably Sage can make sense of it. Or the same design can directly produce whatever Sage-speak you had in mind. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: LaTeX code to Sage expression?
On 5/14/11 7:57 AM, Bruno Le Floch wrote: Should we contact David Cervone on this? I emailed Davide and sent him the link to this thread the other day. There may be more developments from when he may have looked at it, though. Thanks, Jason -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
Re: [sage-devel] Re: LaTeX code to Sage expression?
@Mike: I couldn't find precise info about the cadabra TeX input, but I
found odd things: "x^{2x+1}" is interpreted as "x^{2+x+1}". I may be
misunderstanding something, though.
@Dan: I just had to add the rule ")(" => ")*(" that I had forgotten
yesterday, and here is what I get:
(((x-1)*(x**(4)*(1-y)-(x-1))+sqrt((x-1)*(x-1+x**(4)*(y-1))*(-x**(4)*(x-1)*(1-
y)-(3*x-1)*(x+1/(2*x**(2)*(x-1+x**(4)*(y-1
And it wasn't too difficult to add some code to keep track of which
variables appear in the expression, giving var("x,y"). I still need to
polish and comment the code, but it shouldn't take too long. Do you
have harder cases? What is the correct expression (if any) in Sage for
the following?
\sum_{1 < k < n} k
\sum_{\substack{1 < j < n \\ 1 < k < m}} j^k
\sum_{k=0}^{\infty} \frac{x^k}{k!}
> We might also talk with the jsmath/mathjax developer, Davide Cervone.
> IIRC, he already converts from latex to MathML, so there is some sort of
> tex processing that he is doing in javascript. We've talked with him
> about a way to convert from latex/mathjax back to Sage code before.
For general TeX code, containing user-defined macros etc, the only way
I think is to use TeX to expand macros (my parser currently does that
when encountering an unknown control sequence). For code generated by
Sage, it is probably easier.
> For your application, I wonder if it would be easy to somehow encode
> annotations in the latex output, so that you could delimit
> subexpressions with the code that originally created them. If we output
> mathml instead of latex for mathjax, I suppose that encoding such
> annotations would be easier. Especially if it was Content MathML
> instead of just Presentation MathML.
To be frank, I only know TeX inside out, so I would naturally choose
TeX, but the main question is whether jsmath/mathjax have some kind of
"reverse search" feature (going from the display to the LaTeX). Should
we contact David Cervone on this? --- I wasn't planning to look into
this so soon.
Regards,
Bruno
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[sage-devel] Re: Maple 15 out
> So that issue still exists in Maple 15, however it is generally much better > because memory is recycled. As far as I understand on my side, the problem with parallelization is that malloc locks threads, therefore I can only parallelize code that does not allocate memory. That's why I can not improve much timings in the sparse case for more cores, because I need to allocate GMP integers for a lot of terms to make polynomials once the multiplication is done using immediate int128. I believe TRIP is using it's own allocator with probably distincts heaps for each thread. > > As for Giac, thanks for the update. I look forward to timing it for our > next paper :) The TRIP benchmark is perhaps a bit unfair for SDMP, because it probably uses the symbolic representation for Maple compared to the polynomial representation for trip and giac. This should not be sensitive for the dense case, but is probably for the sparse case. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Maple 15 out
I was surprised to still see a bit of this in practice on an 8x Core2 system with the example from our paper: f := (1 + x + y + 2*z^2 + 3*t^3 + 5*u^5)^12: g := (1 + u + t + 2*z^2 + 3*y^3 + 5*x^5)^12: What happens here is that we construct the result one term at a time, and doing that requires a lot of bandwidth. We generally assume the cores share a cache, i.e. they can transfer data to each other at least as fast than all of them (in aggregate) can transfer data to memory. This is true of the Core i3/i5/i7 and AMD's cpus. On the 8 x Core2 you have 2 cores sharing an L2, then two of those fused together on a multi-chip-module, and two MCMs connected on the motherboard. So there are a lot of different level of interconnect and the last one is especially slow. In this case, an algorithm that works on a shared data structure in memory will scale better, and this is also true of large multi-cpu systems like what TRIP was tested on. So that issue still exists in Maple 15, however it is generally much better because memory is recycled. The larger example on the TRIP page (power=16) does not slowdown on our 8 x Core2 machine and performance on Nehalem machines (2x4 cores) is very good. Performance on the 8-core Nehalem EX makes me want to buy one. Anyways, you can see we have really bet on manycore versus SMP. Mainly because I can't see how to do more complicated algorithms (like division or powering) in SMP without using an order of magnitude more memory. It's a one-size fits all algorithms and most cpus approach. As for Giac, thanks for the update. I look forward to timing it for our next paper :) -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: bug with direct product of permutation groups
You probably do not have an alpha version. It would have printed in what you did above. On May 13, 11:59 pm, Pierre wrote: > sage --version gives > > Sage Version 4.6.2, Release Date: 2011-02-25 > > how do I find out about the "alpha"? > > On 13 mai, 19:34, Rob Beezer wrote: > > > I do not have too many versions of Sage available to me at the moment, > > but: > > > Your example works properly on 4.6.2.alpha3 > > > Your example fails on 4.6.2.alpha4 and 4.7.rc0 > > > The failure is at the same place as in the initial report. > > > Pierre - What version are you using? > > > The only ticket merged between those two alphas that looks like it > > could possibly be relevant is > > >http://trac.sagemath.org/sage_trac/ticket/11000 > > > which has to do multi-line input to GAP. > > > Rob > > > On May 13, 3:04 pm, Pierre wrote: > > > > Thanks, this works... sometimes. But the following still fails: > > > > sage: G = QuaternionGroup() > > > sage: H = direct_product_permgroups([G, G]) > > > sage: K= direct_product_permgroups([H, G]) > > > > Gap produced error output > > > Syntax error: expression expected > > > $sage17:=;; > > > ^ > > > > executing $sage17:=;; > > > > any thoughts? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
Thanks for the suggestions. I haven't tried to make a hand-crafted absolutely minimal Linux install because that would be a hassle to maintain. I'm only installing the Fedora "Core" packages with a handful of extra stuff (fortran, for example). That way upgrading the Guest OS should just work as easily as upgrading the Sage source release. I agree that sendmail can be turned off. I like sshd, though, because its a nice way to interact with the virtual machine. You can scp files in/out, for example. By default the VM doesn't punch the ssh port through its NAT for security, but that can be easily done in the VirtualBox settings. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
Re: [sage-devel] sage-4.7 release schedule
Le 12/05/2011 17:13, Jeroen Demeyer a écrit : At this point nothing is blocking the sage-4.7 release any more. So it would be nice if everybody could try to build and test Sage, to see whether there are any remaining issues. If not, I will release sage-4.7 in about a week or so. sage-4.7rc2 still has an atlas which doesn't compile with ARM processors ; see http://trac.sagemath.org/sage_trac/ticket/10808 Snark on #sagemath -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
probably VMWare requires a slightly different directory layout: http://gvaro.wordpress.com/2010/05/07/vmware-player-error-“failed-to-open-virtual-machine-failed-to-query-source-for-information-”/ (don't know if Bing (ahem...) can find this link though :-)) On May 14, 3:07 pm, Kelvin Li wrote: > On May 13, 8:15 am, Volker Braun wrote: > > > I wrote a script to create a virtual machine with Sage and export it as an > > OVA appliance. I'm using VirtualBox but I think VMware should support it, > > too. At this point it would be useful if people could try it out on a > > variety of host machines. > > Functionally, it works. Sage starts up, I could connect to the > Notebook from my host's Firefox, do "2+2", and surf the documentation. > I didn't run doctests or stress test it in any way. > > I have VirtualBox 4.0.6 (non-free extension pack not installed) on > Windows XP SP3. I did not touch the configuration when importing, so > the guest was set to use 2048 MB of memory, 2 CPUs, and was 64-bit. > The host has 4 GB of memory and an Intel Core 2 Duo. > > Although nothing seems broken, I do have a few complaints. First, the > boot time is quite terrible. The time from my pressing "Start" on the > VirtualBox interface to seeing the login prompt was 1 minute 43 > seconds. By comparison, my 32-bit Debian installation (in the same > VirtualBox) takes only 30 seconds; it is a rather minimal > installation. > > Secondly, this Fedora installation seems rather bloated. When I > shutdown the guest, there are messages saying that the sshd and > sendmail daemons are stopping; but why should they be running in the > first place? I believe that is part of the reason the booting is so > slow. > > Thirdly, could the space in the name of the OVA appliance (Sage > 4.7.rc2) be removed? When importing, the VM is placed in a directory > called "Sage 4.7.rc2", so I end up with a space in the directory name. > > I also tried VMware Player, but upon attempting to open the OVA > appliance, I got an error message: "Failed to open virtual machine: > Failed to query source for information." Same thing happened in VMware > Workstation. > > After a brief Bing search, I could not figure out what these messages > meant. > > I have only briefly glanced over the build script, but I think this is > a good first iteration! > > -- Kelvin -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Sage virtual appliance (VirtualBox)
On May 13, 8:15 am, Volker Braun wrote: > I wrote a script to create a virtual machine with Sage and export it as an > OVA appliance. I'm using VirtualBox but I think VMware should support it, > too. At this point it would be useful if people could try it out on a > variety of host machines. Functionally, it works. Sage starts up, I could connect to the Notebook from my host's Firefox, do "2+2", and surf the documentation. I didn't run doctests or stress test it in any way. I have VirtualBox 4.0.6 (non-free extension pack not installed) on Windows XP SP3. I did not touch the configuration when importing, so the guest was set to use 2048 MB of memory, 2 CPUs, and was 64-bit. The host has 4 GB of memory and an Intel Core 2 Duo. Although nothing seems broken, I do have a few complaints. First, the boot time is quite terrible. The time from my pressing "Start" on the VirtualBox interface to seeing the login prompt was 1 minute 43 seconds. By comparison, my 32-bit Debian installation (in the same VirtualBox) takes only 30 seconds; it is a rather minimal installation. Secondly, this Fedora installation seems rather bloated. When I shutdown the guest, there are messages saying that the sshd and sendmail daemons are stopping; but why should they be running in the first place? I believe that is part of the reason the booting is so slow. Thirdly, could the space in the name of the OVA appliance (Sage 4.7.rc2) be removed? When importing, the VM is placed in a directory called "Sage 4.7.rc2", so I end up with a space in the directory name. I also tried VMware Player, but upon attempting to open the OVA appliance, I got an error message: "Failed to open virtual machine: Failed to query source for information." Same thing happened in VMware Workstation. After a brief Bing search, I could not figure out what these messages meant. I have only briefly glanced over the build script, but I think this is a good first iteration! -- Kelvin -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
