Re: Fwd: [sage-support] Sage 9.3 for Windows crashing

[Fernando Gouvea]

Not on my machine. I even tried something like P=plot(something) 
followed by P.save('filename'). The assignment works fine, but when it 
tries to save the Sage kernel crashes.


The only workaround I have found is using SageCell. But that is not very 
convenient if I need to save the result.


Fernando

On 11/26/2021 12:21 PM, Dima Pasechnik wrote:



On Fri, 26 Nov 2021, 17:20 Kai Weber,  wrote:

Hi, I do have the same problem. I can't use plot() - not even a
plot(1) with a constant . I am running Sage 9.3 on Windows 11 and
Surface Book 3. I understand that the problem will not be solved
until Sage 9.5. But I need the plot() function now. Is there a
workaround or another way to plot data?


Does it work in a Jupyter notebook?


Thanks for your answers in advance,

Cheers, Kai

Matthias Koeppe schrieb am Donnerstag, 23. September 2021 um
18:36:45 UTC+2:

No, the 9.4 binaries have the same problem, as noted in

https://wiki.sagemath.org/ReleaseTours/sage-9.4#Availability_as_binaries_and_in_distributions


We have two tickets in the 9.5 development series that aim to
fix this problem:
- https://trac.sagemath.org/ticket/32424 (waiting for review)
- https://trac.sagemath.org/ticket/32488 (which will be in
9.5.beta2)



On Thursday, September 23, 2021 at 2:49:40 AM UTC-7 Dima
Pasechnik wrote:

On Wed, Sep 22, 2021 at 10:12 PM Fernando Gouvea
 wrote:

Update: the problem is machine-dependent. On one Dell
laptop, plot works with no problem. On a different
one, big crash.


We see this with other operating systems, too. Hopefully
fixed in 9.4, see
https://trac.sagemath.org/ticket/31565

Fernando

On 9/22/2021 3:49 PM, William Stein wrote:

-- Forwarded message -
From: Fernando Q. Gouvea
Date: Wed, Sep 22, 2021 at 12:26 PM
Subject: Re: [sage-support] Sage 9.3 for Windows crashing
To: William Stein


At this point, only plotting has caused the problem. For 
example:

sage: K=Qp(7)
sage: K
7-adic Field with capped relative precision 20
sage: a=K(8)
sage: a
1 + 7 + O(7^20)
sage: sqrt(a)
1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 
7^11 +
4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + 
O(7^20)
sage: log(a)
7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 
4*7^10 +
2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 
2*7^18 +
7^19 + O(7^20)

That all works fine.

Fernando

On 9/22/2021 2:46 PM, William Stein wrote:

On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. 
Gouvea  wrote:

I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, 
I get the same problem. The offending command is pretty innocuous:

sage: plot(ln(1+x),(-1,5))

The Sage window then crashes. In the notebook I get a message 
that the kernel just died. Running it in the Sage Terminal, sage crashes and 
leaves this message behind:



Unhandled SIGSEGV: A segmentation fault occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.


/opt/sagemath-9.3/src/bin/sage-python: line 2:  1535 Segmentation fault   
   (core dumped) sage -python "$@"

Any ideas as to what is going on?

Do lots of things you try cause problems like this or is it 
just plotting?

E.g., what if you do some basic arithmetic with p-adic numbers, 
e.g.,
some examples from here:


https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html

(Sorry, I can't help asking that given that I learned all about
p-adics from your book decades ago...)


Fernando


--

==
Fernando Q. Gouvea
Carter Professor of Mathematics
Colby College
Mayflower Hill 5836
Waterville, ME 04901
fqgo...@colby.eduhttp://www.colby.edu/~fqgouvea

Humility engenders learning because it 

Re: Fwd: [sage-support] Sage 9.3 for Windows crashing

[Dima Pasechnik]

On Fri, 26 Nov 2021, 17:20 Kai Weber,  wrote:

> Hi, I do have the same problem. I can't use plot() - not even a plot(1)
> with a constant . I am running Sage 9.3 on Windows 11 and Surface Book 3. I
> understand that the problem will not be solved until Sage 9.5. But I need
> the plot() function now. Is there a workaround or another way to plot data?


Does it work in a Jupyter notebook?


> Thanks for your answers in advance,
>
> Cheers, Kai
>
> Matthias Koeppe schrieb am Donnerstag, 23. September 2021 um 18:36:45
> UTC+2:
>
>> No, the 9.4 binaries have the same problem, as noted in
>> https://wiki.sagemath.org/ReleaseTours/sage-9.4#Availability_as_binaries_and_in_distributions
>>
>> We have two tickets in the 9.5 development series that aim to fix this
>> problem:
>> - https://trac.sagemath.org/ticket/32424 (waiting for review)
>> - https://trac.sagemath.org/ticket/32488 (which will be in 9.5.beta2)
>>
>>
>>
>> On Thursday, September 23, 2021 at 2:49:40 AM UTC-7 Dima Pasechnik wrote:
>>
>>> On Wed, Sep 22, 2021 at 10:12 PM Fernando Gouvea 
>>> wrote:
>>>
 Update: the problem is machine-dependent. On one Dell laptop, plot
 works with no problem. On a different one, big crash.

>>>
>>> We see this with other operating systems, too. Hopefully fixed in 9.4,
>>> see
>>> https://trac.sagemath.org/ticket/31565
>>>
>>>
 Fernando
 On 9/22/2021 3:49 PM, William Stein wrote:

 -- Forwarded message -
 From: Fernando Q. Gouvea 
 Date: Wed, Sep 22, 2021 at 12:26 PM
 Subject: Re: [sage-support] Sage 9.3 for Windows crashing
 To: William Stein 


 At this point, only plotting has caused the problem. For example:

 sage: K=Qp(7)
 sage: K
 7-adic Field with capped relative precision 20
 sage: a=K(8)
 sage: a
 1 + 7 + O(7^20)
 sage: sqrt(a)
 1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 7^11 +
 4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + O(7^20)
 sage: log(a)
 7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 4*7^10 +
 2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 2*7^18 +
 7^19 + O(7^20)

 That all works fine.

 Fernando

 On 9/22/2021 2:46 PM, William Stein wrote:

 On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea  
 wrote:

 I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the 
 same problem. The offending command is pretty innocuous:

 sage: plot(ln(1+x),(-1,5))

 The Sage window then crashes. In the notebook I get a message that the 
 kernel just died. Running it in the Sage Terminal, sage crashes and leaves 
 this message behind:

 
 Unhandled SIGSEGV: A segmentation fault occurred.
 This probably occurred because a *compiled* module has a bug
 in it and is not properly wrapped with sig_on(), sig_off().
 Python will now terminate.
 
 /opt/sagemath-9.3/src/bin/sage-python: line 2:  1535 Segmentation fault
   (core dumped) sage -python "$@"

 Any ideas as to what is going on?

 Do lots of things you try cause problems like this or is it just plotting?

 E.g., what if you do some basic arithmetic with p-adic numbers, e.g.,
 some examples from here:
 https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html

 (Sorry, I can't help asking that given that I learned all about
 p-adics from your book decades ago...)


 Fernando


 --
 ==
 Fernando Q. Gouvea
 Carter Professor of Mathematics
 Colby College
 Mayflower Hill 5836
 Waterville, ME 04901fqgo...@colby.edu   http://www.colby.edu/~fqgouvea

 Humility engenders learning because it beats back the arrogance
 that puts blinders on. It leaves you open for truths to reveal
 themselves. You don't stand in your own way.
-- Wynton Marsalis

 --
 You received this message because you are subscribed to the Google Groups 
 "sage-support" group.
 To unsubscribe from this group and stop receiving emails from it, send an 
 email to sage-support...@googlegroups.com.
 To view this discussion on the web visit 
 https://groups.google.com/d/msgid/sage-support/e587c471-9ffa-4364-5fa2-fbf40d63e7d6%40colby.edu.

 --
 ==
 Fernando Q. Gouvea
 Carter Professor of Mathematics
 Colby College
 Mayflower Hill 5836
 Waterville, ME 04901fqgo...@colby.edu 
 http://www.colby.edu/~fqgouvea

 What garlic is to food, insanity is to art.




 --
 

Re: Fwd: [sage-support] Sage 9.3 for Windows crashing

[Kai Weber]

Hi, I do have the same problem. I can't use plot() - not even a plot(1) 
with a constant . I am running Sage 9.3 on Windows 11 and Surface Book 3. I 
understand that the problem will not be solved until Sage 9.5. But I need 
the plot() function now. Is there a workaround or another way to plot data?

Thanks for your answers in advance,

Cheers, Kai

Matthias Koeppe schrieb am Donnerstag, 23. September 2021 um 18:36:45 UTC+2:

> No, the 9.4 binaries have the same problem, as noted in 
> https://wiki.sagemath.org/ReleaseTours/sage-9.4#Availability_as_binaries_and_in_distributions
>
> We have two tickets in the 9.5 development series that aim to fix this 
> problem:
> - https://trac.sagemath.org/ticket/32424 (waiting for review)
> - https://trac.sagemath.org/ticket/32488 (which will be in 9.5.beta2)
>
>
>
> On Thursday, September 23, 2021 at 2:49:40 AM UTC-7 Dima Pasechnik wrote:
>
>> On Wed, Sep 22, 2021 at 10:12 PM Fernando Gouvea  
>> wrote:
>>
>>> Update: the problem is machine-dependent. On one Dell laptop, plot works 
>>> with no problem. On a different one, big crash.
>>>
>>
>> We see this with other operating systems, too. Hopefully fixed in 9.4, see
>> https://trac.sagemath.org/ticket/31565
>>  
>>
>>> Fernando
>>> On 9/22/2021 3:49 PM, William Stein wrote:
>>>
>>> -- Forwarded message -
>>> From: Fernando Q. Gouvea 
>>> Date: Wed, Sep 22, 2021 at 12:26 PM
>>> Subject: Re: [sage-support] Sage 9.3 for Windows crashing
>>> To: William Stein 
>>>
>>>
>>> At this point, only plotting has caused the problem. For example:
>>>
>>> sage: K=Qp(7)
>>> sage: K
>>> 7-adic Field with capped relative precision 20
>>> sage: a=K(8)
>>> sage: a
>>> 1 + 7 + O(7^20)
>>> sage: sqrt(a)
>>> 1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 7^11 +
>>> 4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + O(7^20)
>>> sage: log(a)
>>> 7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 4*7^10 +
>>> 2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 2*7^18 +
>>> 7^19 + O(7^20)
>>>
>>> That all works fine.
>>>
>>> Fernando
>>>
>>> On 9/22/2021 2:46 PM, William Stein wrote:
>>>
>>> On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea  
>>> wrote:
>>>
>>> I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the 
>>> same problem. The offending command is pretty innocuous:
>>>
>>> sage: plot(ln(1+x),(-1,5))
>>>
>>> The Sage window then crashes. In the notebook I get a message that the 
>>> kernel just died. Running it in the Sage Terminal, sage crashes and leaves 
>>> this message behind:
>>>
>>> 
>>> Unhandled SIGSEGV: A segmentation fault occurred.
>>> This probably occurred because a *compiled* module has a bug
>>> in it and is not properly wrapped with sig_on(), sig_off().
>>> Python will now terminate.
>>> 
>>> /opt/sagemath-9.3/src/bin/sage-python: line 2:  1535 Segmentation fault 
>>>  (core dumped) sage -python "$@"
>>>
>>> Any ideas as to what is going on?
>>>
>>> Do lots of things you try cause problems like this or is it just plotting?
>>>
>>> E.g., what if you do some basic arithmetic with p-adic numbers, e.g.,
>>> some examples from here:
>>> https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html
>>>
>>> (Sorry, I can't help asking that given that I learned all about
>>> p-adics from your book decades ago...)
>>>
>>>
>>> Fernando
>>>
>>>
>>> --
>>> ==
>>> Fernando Q. Gouvea
>>> Carter Professor of Mathematics
>>> Colby College
>>> Mayflower Hill 5836
>>> Waterville, ME 04901fqgo...@colby.edu   http://www.colby.edu/~fqgouvea
>>>
>>> Humility engenders learning because it beats back the arrogance
>>> that puts blinders on. It leaves you open for truths to reveal
>>> themselves. You don't stand in your own way.
>>>-- Wynton Marsalis
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups 
>>> "sage-support" group.
>>> To unsubscribe from this group and stop receiving emails from it, send an 
>>> email to sage-support...@googlegroups.com.
>>> To view this discussion on the web visit 
>>> https://groups.google.com/d/msgid/sage-support/e587c471-9ffa-4364-5fa2-fbf40d63e7d6%40colby.edu.
>>>
>>> --
>>> ==
>>> Fernando Q. Gouvea
>>> Carter Professor of Mathematics
>>> Colby College
>>> Mayflower Hill 5836
>>> Waterville, ME 04901fqgo...@colby.edu http://www.colby.edu/~fqgouvea
>>>
>>> What garlic is to food, insanity is to art.
>>>
>>>
>>>
>>>
>>> -- 
>>> =
>>> Fernando Q. Gouvea http://www.colby.edu/~fqgouvea
>>> Carter Professor of Mathematics
>>> Dept. of Mathematics and Statistics
>>> Colby College  
>>> 5836 Mayflower Hill

Re: Fwd: [sage-support] Sage 9.3 for Windows crashing

[Matthias Koeppe]

No, the 9.4 binaries have the same problem, as noted 
in 
https://wiki.sagemath.org/ReleaseTours/sage-9.4#Availability_as_binaries_and_in_distributions

We have two tickets in the 9.5 development series that aim to fix this 
problem:
- https://trac.sagemath.org/ticket/32424 (waiting for review)
- https://trac.sagemath.org/ticket/32488 (which will be in 9.5.beta2)



On Thursday, September 23, 2021 at 2:49:40 AM UTC-7 Dima Pasechnik wrote:

> On Wed, Sep 22, 2021 at 10:12 PM Fernando Gouvea  
> wrote:
>
>> Update: the problem is machine-dependent. On one Dell laptop, plot works 
>> with no problem. On a different one, big crash.
>>
>
> We see this with other operating systems, too. Hopefully fixed in 9.4, see
> https://trac.sagemath.org/ticket/31565
>  
>
>> Fernando
>> On 9/22/2021 3:49 PM, William Stein wrote:
>>
>> -- Forwarded message -
>> From: Fernando Q. Gouvea 
>> Date: Wed, Sep 22, 2021 at 12:26 PM
>> Subject: Re: [sage-support] Sage 9.3 for Windows crashing
>> To: William Stein 
>>
>>
>> At this point, only plotting has caused the problem. For example:
>>
>> sage: K=Qp(7)
>> sage: K
>> 7-adic Field with capped relative precision 20
>> sage: a=K(8)
>> sage: a
>> 1 + 7 + O(7^20)
>> sage: sqrt(a)
>> 1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 7^11 +
>> 4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + O(7^20)
>> sage: log(a)
>> 7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 4*7^10 +
>> 2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 2*7^18 +
>> 7^19 + O(7^20)
>>
>> That all works fine.
>>
>> Fernando
>>
>> On 9/22/2021 2:46 PM, William Stein wrote:
>>
>> On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea  
>> wrote:
>>
>> I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the 
>> same problem. The offending command is pretty innocuous:
>>
>> sage: plot(ln(1+x),(-1,5))
>>
>> The Sage window then crashes. In the notebook I get a message that the 
>> kernel just died. Running it in the Sage Terminal, sage crashes and leaves 
>> this message behind:
>>
>> 
>> Unhandled SIGSEGV: A segmentation fault occurred.
>> This probably occurred because a *compiled* module has a bug
>> in it and is not properly wrapped with sig_on(), sig_off().
>> Python will now terminate.
>> 
>> /opt/sagemath-9.3/src/bin/sage-python: line 2:  1535 Segmentation fault  
>> (core dumped) sage -python "$@"
>>
>> Any ideas as to what is going on?
>>
>> Do lots of things you try cause problems like this or is it just plotting?
>>
>> E.g., what if you do some basic arithmetic with p-adic numbers, e.g.,
>> some examples from here:
>> https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html
>>
>> (Sorry, I can't help asking that given that I learned all about
>> p-adics from your book decades ago...)
>>
>>
>> Fernando
>>
>>
>> --
>> ==
>> Fernando Q. Gouvea
>> Carter Professor of Mathematics
>> Colby College
>> Mayflower Hill 5836
>> Waterville, ME 04901fqgo...@colby.edu   http://www.colby.edu/~fqgouvea
>>
>> Humility engenders learning because it beats back the arrogance
>> that puts blinders on. It leaves you open for truths to reveal
>> themselves. You don't stand in your own way.
>>-- Wynton Marsalis
>>
>> --
>> You received this message because you are subscribed to the Google Groups 
>> "sage-support" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to sage-support...@googlegroups.com.
>> To view this discussion on the web visit 
>> https://groups.google.com/d/msgid/sage-support/e587c471-9ffa-4364-5fa2-fbf40d63e7d6%40colby.edu.
>>
>> --
>> ==
>> Fernando Q. Gouvea
>> Carter Professor of Mathematics
>> Colby College
>> Mayflower Hill 5836
>> Waterville, ME 04901fqgo...@colby.edu http://www.colby.edu/~fqgouvea
>>
>> What garlic is to food, insanity is to art.
>>
>>
>>
>>
>> -- 
>> =
>> Fernando Q. Gouvea http://www.colby.edu/~fqgouvea
>> Carter Professor of Mathematics
>> Dept. of Mathematics and Statistics
>> Colby College  
>> 5836 Mayflower Hill
>> Waterville, ME 04901   
>>
>> We receive the deepest truths only when we're patient enough
>> -- and stable enough and docile enough -- to allow ourselves
>> to be taught them.
>>   -- R. R. Reno, in "Piety's Rightful Claim"
>>
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "sage-support" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to sage-support...@googlegroups.com.
>>
> To view this discussion on the web visit 
>> 

Re: Fwd: [sage-support] Sage 9.3 for Windows crashing

[Dima Pasechnik]

On Wed, Sep 22, 2021 at 10:12 PM Fernando Gouvea  wrote:

> Update: the problem is machine-dependent. On one Dell laptop, plot works
> with no problem. On a different one, big crash.
>

We see this with other operating systems, too. Hopefully fixed in 9.4, see
https://trac.sagemath.org/ticket/31565


> Fernando
> On 9/22/2021 3:49 PM, William Stein wrote:
>
> -- Forwarded message -
> From: Fernando Q. Gouvea  
> Date: Wed, Sep 22, 2021 at 12:26 PM
> Subject: Re: [sage-support] Sage 9.3 for Windows crashing
> To: William Stein  
>
>
> At this point, only plotting has caused the problem. For example:
>
> sage: K=Qp(7)
> sage: K
> 7-adic Field with capped relative precision 20
> sage: a=K(8)
> sage: a
> 1 + 7 + O(7^20)
> sage: sqrt(a)
> 1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 7^11 +
> 4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + O(7^20)
> sage: log(a)
> 7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 4*7^10 +
> 2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 2*7^18 +
> 7^19 + O(7^20)
>
> That all works fine.
>
> Fernando
>
> On 9/22/2021 2:46 PM, William Stein wrote:
>
> On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea  
>  wrote:
>
> I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the 
> same problem. The offending command is pretty innocuous:
>
> sage: plot(ln(1+x),(-1,5))
>
> The Sage window then crashes. In the notebook I get a message that the kernel 
> just died. Running it in the Sage Terminal, sage crashes and leaves this 
> message behind:
>
> 
> Unhandled SIGSEGV: A segmentation fault occurred.
> This probably occurred because a *compiled* module has a bug
> in it and is not properly wrapped with sig_on(), sig_off().
> Python will now terminate.
> 
> /opt/sagemath-9.3/src/bin/sage-python: line 2:  1535 Segmentation fault  
> (core dumped) sage -python "$@"
>
> Any ideas as to what is going on?
>
> Do lots of things you try cause problems like this or is it just plotting?
>
> E.g., what if you do some basic arithmetic with p-adic numbers, e.g.,
> some examples from here:
> https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html
>
> (Sorry, I can't help asking that given that I learned all about
> p-adics from your book decades ago...)
>
>
> Fernando
>
>
> --
> ==
> Fernando Q. Gouvea
> Carter Professor of Mathematics
> Colby College
> Mayflower Hill 5836
> Waterville, ME 04901fqgou...@colby.edu   http://www.colby.edu/~fqgouvea
>
> Humility engenders learning because it beats back the arrogance
> that puts blinders on. It leaves you open for truths to reveal
> themselves. You don't stand in your own way.
>-- Wynton Marsalis
>
> --
> You received this message because you are subscribed to the Google Groups 
> "sage-support" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to sage-support+unsubscr...@googlegroups.com.
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/sage-support/e587c471-9ffa-4364-5fa2-fbf40d63e7d6%40colby.edu.
>
> --
> ==
> Fernando Q. Gouvea
> Carter Professor of Mathematics
> Colby College
> Mayflower Hill 5836
> Waterville, ME 04901fqgou...@colby.edu http://www.colby.edu/~fqgouvea
>
> What garlic is to food, insanity is to art.
>
>
>
>
> --
> =
> Fernando Q. Gouvea http://www.colby.edu/~fqgouvea
> Carter Professor of Mathematics
> Dept. of Mathematics and Statistics
> Colby College
> 5836 Mayflower Hill
> Waterville, ME 04901
>
> We receive the deepest truths only when we're patient enough
> -- and stable enough and docile enough -- to allow ourselves
> to be taught them.
>   -- R. R. Reno, in "Piety's Rightful Claim"
>
>
> --
> You received this message because you are subscribed to the Google Groups
> "sage-support" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to sage-support+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/sage-support/0df8d5b6-4528-48c4-19df-acab2df1371c%40colby.edu
> 
> .
>

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Re: Fwd: [sage-support] Sage 9.3 for Windows crashing

[Fernando Gouvea]

Update: the problem is machine-dependent. On one Dell laptop, plot works 
with no problem. On a different one, big crash.


Fernando

On 9/22/2021 3:49 PM, William Stein wrote:

-- Forwarded message -
From: Fernando Q. Gouvea 
Date: Wed, Sep 22, 2021 at 12:26 PM
Subject: Re: [sage-support] Sage 9.3 for Windows crashing
To: William Stein 


At this point, only plotting has caused the problem. For example:

sage: K=Qp(7)
sage: K
7-adic Field with capped relative precision 20
sage: a=K(8)
sage: a
1 + 7 + O(7^20)
sage: sqrt(a)
1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 7^11 +
4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + O(7^20)
sage: log(a)
7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 4*7^10 +
2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 2*7^18 +
7^19 + O(7^20)

That all works fine.

Fernando

On 9/22/2021 2:46 PM, William Stein wrote:

On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea  wrote:

I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the same 
problem. The offending command is pretty innocuous:

sage: plot(ln(1+x),(-1,5))

The Sage window then crashes. In the notebook I get a message that the kernel 
just died. Running it in the Sage Terminal, sage crashes and leaves this 
message behind:


Unhandled SIGSEGV: A segmentation fault occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.

/opt/sagemath-9.3/src/bin/sage-python: line 2:  1535 Segmentation fault  (core 
dumped) sage -python "$@"

Any ideas as to what is going on?

Do lots of things you try cause problems like this or is it just plotting?

E.g., what if you do some basic arithmetic with p-adic numbers, e.g.,
some examples from here:

https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html

(Sorry, I can't help asking that given that I learned all about
p-adics from your book decades ago...)


Fernando


--
==
Fernando Q. Gouvea
Carter Professor of Mathematics
Colby College
Mayflower Hill 5836
Waterville, ME 04901
fqgou...@colby.edu   http://www.colby.edu/~fqgouvea

Humility engenders learning because it beats back the arrogance
that puts blinders on. It leaves you open for truths to reveal
themselves. You don't stand in your own way.
-- Wynton Marsalis

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--
==
Fernando Q. Gouvea
Carter Professor of Mathematics
Colby College
Mayflower Hill 5836
Waterville, ME 04901
fqgou...@colby.edu http://www.colby.edu/~fqgouvea

What garlic is to food, insanity is to art.




--
=
Fernando Q. Gouvea http://www.colby.edu/~fqgouvea
Carter Professor of Mathematics
Dept. of Mathematics and Statistics
Colby College
5836 Mayflower Hill
Waterville, ME 04901

We receive the deepest truths only when we're patient enough
-- and stable enough and docile enough -- to allow ourselves
to be taught them.
  -- R. R. Reno, in "Piety's Rightful Claim"

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