Re: [sage-devel] Moving compiled Sage on SMC no longer possible

[Thierry Dumont]

My problem was abit more complicated: I compile sage on a nfs server in 
a directory A; A is seen by the nfs clients as B. This cannot work, I think.

(I finally mounted A on the nfs server on a local directory Band it worked).
Thanks
t.

Le 29/01/2016 06:30, Rob Beezer a écrit :

I've seen some messages about the "relocatability" of compiled Sage
recently, but cannot find them now.

I've been building compiled versions of Sage on SageMathCloud, to make
it easier for people to begin development.

https://cloud.sagemath.com/projects/53b77207-8614-4086-a032-432af4b4cdbd/files/sage-dev-images/

In response to a user's question, I tried copying 7.1.beta0 and when
trying to start Sage got:

|
ERROR:TheSageinstallation tree has moved

from/projects/53b77207-8614-4086-a032-432af4b4cdbd/sage-dev-images/sage-7.1.beta0
   to /projects/53b77207-8614-4086-a032-432af4b4cdbd/sage-7.1.beta0

Thisisnotsupported,andSagewill notwork.Toinstall Sagefroma
binary package:
|

That seems pretty unambiguous, but I wanted to confirm that is now
pointless for me to make these images available.

Thanks,
Rob

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<>

Re: [sage-devel] Trac detected an internal error: OSError: [Errno 2] No such file or directory: ...

[Justin C. Walker]

> On Jan 28, 2016, at 22:35, Samuel Lelièvre  wrote:
> 
> Trying to connect to
> 
>http://trac.sagemath.org/ticket/11517
> 
> I get this error
> 
>Trac detected an internal error:
> 
>OSError: [Errno 2] No such file or directory: '/tmp/tmpsZUs5s'
> 
> What is that a sign of? Disk full? Other?
> Who can do something about it? Thanks!

FWIW, it’s not uniformly failing.  I don’t see the problem on two (OS X) 
systems.

Is this repeatable for you?

--
Justin C. Walker, Curmudgeon at Large
Director
Institute for the Enhancement of the Director's Income
---
Nobody knows the trouble I've been
---



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[sage-devel] Re: Moving compiled Sage on SMC no longer possible

[Dima Pasechnik]

On Friday, 29 January 2016 05:30:58 UTC, Rob Beezer wrote:
>
> I've seen some messages about the "relocatability" of compiled Sage 
> recently, but cannot find them now.
>
> I've been building compiled versions of Sage on SageMathCloud, to make it 
> easier for people to begin development.
>
>
> https://cloud.sagemath.com/projects/53b77207-8614-4086-a032-432af4b4cdbd/files/sage-dev-images/
>
> In response to a user's question, I tried copying 7.1.beta0 and when 
> trying to start Sage got:
>
> ERROR:  The Sage installation tree has moved
>  
> from /projects/53b77207-8614-4086-a032-432af4b4cdbd/sage-dev-images/sage-
> 7.1.beta0
>   to /projects/53b77207-8614-4086-a032-432af4b4cdbd/sage-7.1.beta0
>  
> This is not supported, and Sage will not work. To install Sage from a
> binary package:
>
> That seems pretty unambiguous, but I wanted to confirm that is now 
> pointless for me to make these images available.
>
> they should be appropriately packaged; either you make a proper 
distribution image, (sage -bdist --- or is it broken now?),
or perhaps using https://github.com/sagemath/binary-pkg ?

 

> Thanks,
> Rob
>

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[sage-devel] Trac detected an internal error: OSError: [Errno 2] No such file or directory: ...

[Samuel Lelièvre]

Trying to connect to

http://trac.sagemath.org/ticket/11517

I get this error

Trac detected an internal error:

OSError: [Errno 2] No such file or directory: '/tmp/tmpsZUs5s'

What is that a sign of? Disk full? Other?
Who can do something about it? Thanks!
Samuel

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[sage-devel] Moving compiled Sage on SMC no longer possible

[Rob Beezer]

I've seen some messages about the "relocatability" of compiled Sage 
recently, but cannot find them now.

I've been building compiled versions of Sage on SageMathCloud, to make it 
easier for people to begin development.

https://cloud.sagemath.com/projects/53b77207-8614-4086-a032-432af4b4cdbd/files/sage-dev-images/

In response to a user's question, I tried copying 7.1.beta0 and when trying 
to start Sage got:

ERROR:  The Sage installation tree has moved
 
from /projects/53b77207-8614-4086-a032-432af4b4cdbd/sage-dev-images/sage-7.1
.beta0
  to /projects/53b77207-8614-4086-a032-432af4b4cdbd/sage-7.1.beta0
 
This is not supported, and Sage will not work. To install Sage from a
binary package:

That seems pretty unambiguous, but I wanted to confirm that is now 
pointless for me to make these images available.

Thanks,
Rob

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Re: [sage-devel] upgrade openssl

[kcrisman]

On Thursday, January 28, 2016 at 2:27:12 PM UTC-5, William wrote:
>
> Of related interest, Jupyter will maybe soon not *require* openssl to 
> work locally.  See 
>
>   https://github.com/jupyter/notebook/issues/1019 
>
>
+1 

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Re: [sage-devel] Re: Access to old binaries

[Ondřej Čertík]

On Thu, Jan 28, 2016 at 12:55 PM, Volker Braun  wrote:
> We do delete old binaries to not over stay our welcome with the mirror
> admins...
>
> I restored (note gz instead of lrz)
> http://files.sagemath.org/linux/64bit/sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.gz

Yes, that's a good thing. Thanks for restoring it, I downloaded and
I'll host it myself for our Travis-CI.

Ondrej

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Re: [sage-devel] Hacker news thread about math software ("Announcing Wolfram Programming Lab")

[Dima Pasechnik]

On Thursday, 28 January 2016 18:04:12 UTC, William wrote:
>
> On Thu, Jan 28, 2016 at 9:50 AM, Thierry 
> > wrote: 
> > Hi, 
> > 
> > On Thu, Jan 28, 2016 at 09:39:06AM -0800, William Stein wrote: 
> >> On Thu, Jan 28, 2016 at 9:17 AM, Francesco Biscani  > wrote: 
> >> > I am not a Mathematica user, so I cannot really comment about 
> Mathematica's 
> >> > flaws 
> >> > 
> >> > (Incidentally, I remember some years ago someone built a system to 
> feed 
> >> > random input to CASes, with which he found many mathematical bugs in 
> the big 
> >> > Ms. I wonder if he's still doing it?) 
> >> > 
> >> 
> >> That's v_...@ukr.net , who is subscribed to this list, 
> often posts about 
> >> Ukraine-related issues here, and has spoken at Sage Days in the past. 
> >>  I really apprecaite that he put hard work into showing that these 
> >> black boxes shouldn't be trusted. 
> > 
> > Great, i hope he also attacks Sage the same way, so that we get an 
> > hardened system, this is somehow dual to the unit tests we have right 
> now. 
> > 
> > If some scripts are available somewhere, i would be glad to have a look 
> > and let them run for a while within some VM. 
>
> He wrote everything in a language called "Delphi" (or something like 
> that) -- I think a Pascal dialect. I don't think he made his code 
> available.  I think he did in the past find many issues with Sage 
> symbolic too, which we benefited from. 
>

Delphi ts the continuation of Turbo Pascal by Borland

Dima
(feeling strangely nostalgic :)
PS. I did use Borland's Turbo C in my previous life...


 

>
>  -- William 
>
> > 
> > Ciao, 
> > Thierry 
> > 
> > 
> >> William 
> >> 
> >> > But the fact that it is a black box should be a showstopper for any 
> serious 
> >> > use in research. 
> >> > 
> >> > On 26 January 2016 at 22:05, rjf > 
> wrote: 
> >> >> 
> >> >> I think it is somewhat disheartening to see Mathematica accepted as 
> >> >> a program whose major or only flaw is that it is not open source. 
> >> >> 
> >> >> But maybe I didn't read all the comments.  It seems that the 
> >> >> ycombinator contributors tend to rattle on a while. 
> >> >> RjF 
> >> >> 
> >> >> On Wednesday, January 20, 2016 at 5:49:13 AM UTC-8, bluescarni 
> wrote: 
> >> >>> 
> >> >>> It's somewhat refreshing to see that the idea that one should not 
> use 
> >> >>> black box software in science is finally starting to sink in. 
> >> >>> 
> >> >>> On 20 January 2016 at 13:30, William Stein  
> wrote: 
> >>  
> >>  There's a big thread on Hacker News about math software in which 
> Sage 
> >>  is mentioned a few times: 
> >>  
> >>  https://news.ycombinator.com/item?id=10934666 
> >>  
> >>  I have the impression very few of the comments are from 
> >>  mathematicians...  Nonetheless, some people may find the comments 
> >>  interesting, since they reflect how open source math and 
> scientific 
> >>  software such as Sage/Python/Sympy/Octave are (mis-)perceived by 
> one 
> >>  group of potential users. 
> >>  
> >>   -- William 
> >>  
> >>  -- 
> >>  You received this message because you are subscribed to the Google 
> >>  Groups "sage-devel" group. 
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> send 
> >>  an email to sage-devel+...@googlegroups.com. 
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> >>  For more options, visit https://groups.google.com/d/optout. 
> >> >>> 
> >> >>> 
> >> >> -- 
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> >> > 
> >> > 
> >> > -- 
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> >> 
> >> 
> >> 
> >> -- 
> >> William (http://wstein.org) 
> >> 
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[sage-devel] Re: Forking/patching of upstream projects

[Volker Braun]

To give this thread some closure: Further discussion with upstream made it 
clear that a fork is the best option.

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[sage-devel] Re: Access to old binaries

[Volker Braun]

We do delete old binaries to not over stay our welcome with the mirror 
admins...

I restored (note gz instead of lrz) 
http://files.sagemath.org/linux/64bit/sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.gz


On Thursday, January 28, 2016 at 6:15:41 PM UTC+1, Ondřej Čertík wrote:
>
> Hi, 
>
> We test our library against Sage on Travis-CI, so we install it like this: 
>
> wget -O- 
> http://files.sagemath.org/linux/64bit/sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.lrz
>  
> | lrzip -dq | tar x 
>
> and lately the sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.lrz 
> version is not available anymore, so our Travis-CI fails. We are 
> having some issues with the newer version of Sage, so until we fix our 
> library, it would make our life a lot easier if we can simply continue 
> testing a given Sage version, and upgrade when we are ready. 
>
> Is there a way to access this particular binary 
> sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.lrz? I tried to google 
> it, but I was unsuccessful. 
>
> I'll be archiving the binaries that we need on Travis from now on, I 
> just didn't know that it would disappear. 
>
> Ondrej 
>

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Re: [sage-devel] upgrade openssl

[William Stein]

Of related interest, Jupyter will maybe soon not *require* openssl to
work locally.  See

  https://github.com/jupyter/notebook/issues/1019

On Thu, Jan 28, 2016 at 9:42 AM, kcrisman  wrote:
> In some correspondence with William he notes:
>
> I'll also note there is a "high severity" security update to openssl
> that came out today (version 1.0.2f) -- I hope Sage gets an updated
> package in a timely manner.
>
> https://www.openssl.org/news/secadv/20160128.txt
>
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-- 
William (http://wstein.org)

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Re: [sage-devel] Hacker news thread about math software ("Announcing Wolfram Programming Lab")

[Francesco Biscani]

Ah thanks for the pointer, it took some google fu to get finally to his
website. In case anyone is interested:

http://www.cas-testing.org/



On 28 January 2016 at 18:39, William Stein  wrote:

> On Thu, Jan 28, 2016 at 9:17 AM, Francesco Biscani 
> wrote:
> > I am not a Mathematica user, so I cannot really comment about
> Mathematica's
> > flaws
> >
> > (Incidentally, I remember some years ago someone built a system to feed
> > random input to CASes, with which he found many mathematical bugs in the
> big
> > Ms. I wonder if he's still doing it?)
> >
>
> That's v...@ukr.net, who is subscribed to this list, often posts about
> Ukraine-related issues here, and has spoken at Sage Days in the past.
>  I really apprecaite that he put hard work into showing that these
> black boxes shouldn't be trusted.
>
> William
>
> > But the fact that it is a black box should be a showstopper for any
> serious
> > use in research.
> >
> > On 26 January 2016 at 22:05, rjf  wrote:
> >>
> >> I think it is somewhat disheartening to see Mathematica accepted as
> >> a program whose major or only flaw is that it is not open source.
> >>
> >> But maybe I didn't read all the comments.  It seems that the
> >> ycombinator contributors tend to rattle on a while.
> >> RjF
> >>
> >> On Wednesday, January 20, 2016 at 5:49:13 AM UTC-8, bluescarni wrote:
> >>>
> >>> It's somewhat refreshing to see that the idea that one should not use
> >>> black box software in science is finally starting to sink in.
> >>>
> >>> On 20 January 2016 at 13:30, William Stein  wrote:
> 
>  There's a big thread on Hacker News about math software in which Sage
>  is mentioned a few times:
> 
>  https://news.ycombinator.com/item?id=10934666
> 
>  I have the impression very few of the comments are from
>  mathematicians...  Nonetheless, some people may find the comments
>  interesting, since they reflect how open source math and scientific
>  software such as Sage/Python/Sympy/Octave are (mis-)perceived by one
>  group of potential users.
> 
>   -- William
> 
>  --
>  You received this message because you are subscribed to the Google
>  Groups "sage-devel" group.
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> >>>
> >>>
> >> --
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>
>
> --
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>
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Re: [sage-devel] upgrade openssl

[Michael Orlitzky]

On 01/28/2016 01:39 PM, Thierry wrote:
> 
> It should work on OSX as well, at least it was tested on OSX 32bit for
> 1.0.1e https://trac.sagemath.org/ticket/16454
> 

Unrelated: the self-signed certificate on trac.sagemath.org is expired.
If someone can generate a new one, just make it valid for ten years.

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Re: [sage-devel] upgrade openssl

[Thierry]

On Thu, Jan 28, 2016 at 10:25:12AM -0800, kcrisman wrote:
> 
> 
> >
> > Note that it only affects people that do not use the openssl provided by 
> > their distro. 
> >
> >  
> I don't know how easy it would be for Mac to use that one in Sage.  But 
> anyway this is mostly for the sagenb which people would be running on 
> Linux, or so I believe.  (This occurred in the context of discussion of 
> Jupyter, which apparently requires ssl for the one-user version.)

It should work on OSX as well, at least it was tested on OSX 32bit for
1.0.1e https://trac.sagemath.org/ticket/16454

It is also required for pip to work (use of https).

Ciao,
Thierry

 
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Re: [sage-devel] upgrade openssl

[kcrisman]

>
> Note that it only affects people that do not use the openssl provided by 
> their distro. 
>
>  
I don't know how easy it would be for Mac to use that one in Sage.  But 
anyway this is mostly for the sagenb which people would be running on 
Linux, or so I believe.  (This occurred in the context of discussion of 
Jupyter, which apparently requires ssl for the one-user version.)

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Re: [sage-devel] upgrade openssl

[Thierry]

Hi,

On Thu, Jan 28, 2016 at 09:42:25AM -0800, kcrisman wrote:
> In some correspondence with William he notes:
> 
> I'll also note there is a "high severity" security update to openssl
> that came out today (version 1.0.2f) -- I hope Sage gets an updated
> package in a timely manner.

I usually do a check when Sage beta get a big number, or during a rc0 if
it comes earlier i thought, see
https://trac.sagemath.org/search?q=update+openssl&noquickjump=1&branch=on&milestone=on&ticket=on&wiki=on

Indeed, with our current framework, there is a benefit only for the next
release (the user's $SAGE_ROOT/build/pkgs/openssl is not updated on the
fly).

Note that it only affects people that do not use the openssl provided by
their distro.

Ciao,
Thierry



> https://www.openssl.org/news/secadv/20160128.txt
> 
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Re: [sage-devel] Hacker news thread about math software ("Announcing Wolfram Programming Lab")

[William Stein]

On Thu, Jan 28, 2016 at 9:50 AM, Thierry
 wrote:
> Hi,
>
> On Thu, Jan 28, 2016 at 09:39:06AM -0800, William Stein wrote:
>> On Thu, Jan 28, 2016 at 9:17 AM, Francesco Biscani  
>> wrote:
>> > I am not a Mathematica user, so I cannot really comment about Mathematica's
>> > flaws
>> >
>> > (Incidentally, I remember some years ago someone built a system to feed
>> > random input to CASes, with which he found many mathematical bugs in the 
>> > big
>> > Ms. I wonder if he's still doing it?)
>> >
>>
>> That's v...@ukr.net, who is subscribed to this list, often posts about
>> Ukraine-related issues here, and has spoken at Sage Days in the past.
>>  I really apprecaite that he put hard work into showing that these
>> black boxes shouldn't be trusted.
>
> Great, i hope he also attacks Sage the same way, so that we get an
> hardened system, this is somehow dual to the unit tests we have right now.
>
> If some scripts are available somewhere, i would be glad to have a look
> and let them run for a while within some VM.

He wrote everything in a language called "Delphi" (or something like
that) -- I think a Pascal dialect. I don't think he made his code
available.  I think he did in the past find many issues with Sage
symbolic too, which we benefited from.

 -- William

>
> Ciao,
> Thierry
>
>
>> William
>>
>> > But the fact that it is a black box should be a showstopper for any serious
>> > use in research.
>> >
>> > On 26 January 2016 at 22:05, rjf  wrote:
>> >>
>> >> I think it is somewhat disheartening to see Mathematica accepted as
>> >> a program whose major or only flaw is that it is not open source.
>> >>
>> >> But maybe I didn't read all the comments.  It seems that the
>> >> ycombinator contributors tend to rattle on a while.
>> >> RjF
>> >>
>> >> On Wednesday, January 20, 2016 at 5:49:13 AM UTC-8, bluescarni wrote:
>> >>>
>> >>> It's somewhat refreshing to see that the idea that one should not use
>> >>> black box software in science is finally starting to sink in.
>> >>>
>> >>> On 20 January 2016 at 13:30, William Stein  wrote:
>> 
>>  There's a big thread on Hacker News about math software in which Sage
>>  is mentioned a few times:
>> 
>>  https://news.ycombinator.com/item?id=10934666
>> 
>>  I have the impression very few of the comments are from
>>  mathematicians...  Nonetheless, some people may find the comments
>>  interesting, since they reflect how open source math and scientific
>>  software such as Sage/Python/Sympy/Octave are (mis-)perceived by one
>>  group of potential users.
>> 
>>   -- William
>> 
>>  --
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>> >>>
>> >>>
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>>
>>
>> --
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>>
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Re: [sage-devel] Hacker news thread about math software ("Announcing Wolfram Programming Lab")

[Thierry]

Hi,

On Thu, Jan 28, 2016 at 09:39:06AM -0800, William Stein wrote:
> On Thu, Jan 28, 2016 at 9:17 AM, Francesco Biscani  
> wrote:
> > I am not a Mathematica user, so I cannot really comment about Mathematica's
> > flaws
> >
> > (Incidentally, I remember some years ago someone built a system to feed
> > random input to CASes, with which he found many mathematical bugs in the big
> > Ms. I wonder if he's still doing it?)
> >
> 
> That's v...@ukr.net, who is subscribed to this list, often posts about
> Ukraine-related issues here, and has spoken at Sage Days in the past.
>  I really apprecaite that he put hard work into showing that these
> black boxes shouldn't be trusted.

Great, i hope he also attacks Sage the same way, so that we get an
hardened system, this is somehow dual to the unit tests we have right now.

If some scripts are available somewhere, i would be glad to have a look
and let them run for a while within some VM.

Ciao,
Thierry


> William
> 
> > But the fact that it is a black box should be a showstopper for any serious
> > use in research.
> >
> > On 26 January 2016 at 22:05, rjf  wrote:
> >>
> >> I think it is somewhat disheartening to see Mathematica accepted as
> >> a program whose major or only flaw is that it is not open source.
> >>
> >> But maybe I didn't read all the comments.  It seems that the
> >> ycombinator contributors tend to rattle on a while.
> >> RjF
> >>
> >> On Wednesday, January 20, 2016 at 5:49:13 AM UTC-8, bluescarni wrote:
> >>>
> >>> It's somewhat refreshing to see that the idea that one should not use
> >>> black box software in science is finally starting to sink in.
> >>>
> >>> On 20 January 2016 at 13:30, William Stein  wrote:
> 
>  There's a big thread on Hacker News about math software in which Sage
>  is mentioned a few times:
> 
>  https://news.ycombinator.com/item?id=10934666
> 
>  I have the impression very few of the comments are from
>  mathematicians...  Nonetheless, some people may find the comments
>  interesting, since they reflect how open source math and scientific
>  software such as Sage/Python/Sympy/Octave are (mis-)perceived by one
>  group of potential users.
> 
>   -- William
> 
>  --
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> >>>
> >>>
> >> --
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> >
> >
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> 
> 
> -- 
> William (http://wstein.org)
> 
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[sage-devel] upgrade openssl

[kcrisman]

In some correspondence with William he notes:

I'll also note there is a "high severity" security update to openssl
that came out today (version 1.0.2f) -- I hope Sage gets an updated
package in a timely manner.

https://www.openssl.org/news/secadv/20160128.txt

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Re: [sage-devel] Hacker news thread about math software ("Announcing Wolfram Programming Lab")

[William Stein]

On Thu, Jan 28, 2016 at 9:17 AM, Francesco Biscani  wrote:
> I am not a Mathematica user, so I cannot really comment about Mathematica's
> flaws
>
> (Incidentally, I remember some years ago someone built a system to feed
> random input to CASes, with which he found many mathematical bugs in the big
> Ms. I wonder if he's still doing it?)
>

That's v...@ukr.net, who is subscribed to this list, often posts about
Ukraine-related issues here, and has spoken at Sage Days in the past.
 I really apprecaite that he put hard work into showing that these
black boxes shouldn't be trusted.

William

> But the fact that it is a black box should be a showstopper for any serious
> use in research.
>
> On 26 January 2016 at 22:05, rjf  wrote:
>>
>> I think it is somewhat disheartening to see Mathematica accepted as
>> a program whose major or only flaw is that it is not open source.
>>
>> But maybe I didn't read all the comments.  It seems that the
>> ycombinator contributors tend to rattle on a while.
>> RjF
>>
>> On Wednesday, January 20, 2016 at 5:49:13 AM UTC-8, bluescarni wrote:
>>>
>>> It's somewhat refreshing to see that the idea that one should not use
>>> black box software in science is finally starting to sink in.
>>>
>>> On 20 January 2016 at 13:30, William Stein  wrote:

 There's a big thread on Hacker News about math software in which Sage
 is mentioned a few times:

 https://news.ycombinator.com/item?id=10934666

 I have the impression very few of the comments are from
 mathematicians...  Nonetheless, some people may find the comments
 interesting, since they reflect how open source math and scientific
 software such as Sage/Python/Sympy/Octave are (mis-)perceived by one
 group of potential users.

  -- William

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>>>
>>>
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>
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-- 
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Re: [sage-devel] Hacker news thread about math software ("Announcing Wolfram Programming Lab")

[Francesco Biscani]

I am not a Mathematica user, so I cannot really comment about Mathematica's
flaws

(Incidentally, I remember some years ago someone built a system to feed
random input to CASes, with which he found many mathematical bugs in the
big Ms. I wonder if he's still doing it?)

But the fact that it is a black box should be a showstopper for any serious
use in research.

On 26 January 2016 at 22:05, rjf  wrote:

> I think it is somewhat disheartening to see Mathematica accepted as
> a program whose major or only flaw is that it is not open source.
>
> But maybe I didn't read all the comments.  It seems that the
> ycombinator contributors tend to rattle on a while.
> RjF
>
> On Wednesday, January 20, 2016 at 5:49:13 AM UTC-8, bluescarni wrote:
>>
>> It's somewhat refreshing to see that the idea that one should not use
>> black box software in science is finally starting to sink in.
>>
>> On 20 January 2016 at 13:30, William Stein  wrote:
>>
>>> There's a big thread on Hacker News about math software in which Sage
>>> is mentioned a few times:
>>>
>>> https://news.ycombinator.com/item?id=10934666
>>>
>>> I have the impression very few of the comments are from
>>> mathematicians...  Nonetheless, some people may find the comments
>>> interesting, since they reflect how open source math and scientific
>>> software such as Sage/Python/Sympy/Octave are (mis-)perceived by one
>>> group of potential users.
>>>
>>>  -- William
>>>
>>> --
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>>> Groups "sage-devel" group.
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>>>
>>
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[sage-devel] Access to old binaries

[Ondřej Čertík]

Hi,

We test our library against Sage on Travis-CI, so we install it like this:

wget -O- 
http://files.sagemath.org/linux/64bit/sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.lrz
| lrzip -dq | tar x

and lately the sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.lrz
version is not available anymore, so our Travis-CI fails. We are
having some issues with the newer version of Sage, so until we fix our
library, it would make our life a lot easier if we can simply continue
testing a given Sage version, and upgrade when we are ready.

Is there a way to access this particular binary
sage-6.9-x86_64-Linux-Ubuntu_12.04_64_bit.tar.lrz? I tried to google
it, but I was unsuccessful.

I'll be archiving the binaries that we need on Travis from now on, I
just didn't know that it would disappear.

Ondrej

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