Freshly installed sage crashes

[Michel VAN DEN BERGH]

Hi,

Today I installed sage on Ubuntu 22.04 using

apt install sagemath

Sadly after typing 'sage' the program crashes. The crash seems to be related to Cython. I am attaching the crash report.

What are my options?

Best regards,

Michel

[Jan Groenewald]

Hi

Does this happen with a user other than your own? Even root will do for a quick test.

Perhaps pip installed packages or other repositories are conflicting. Also try

LC_ALL=C sage

Regards,

Jan

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[Michel VAN DEN BERGH]

I was unable to get the distro sage to work. I compiled sage from source and this solved the problem. Sad though since I would have preferred to use the distro version.

[Henri Girard]

Did you make a link to your compiled version ?

I compiled sage in sage (which us the base dir) after I sudo ln -s /sage /usr/bin/sage then you get sage wide

I installed the ubuntu version which is working fine : sudo apt install sagemath* jupyter* to get all libs working

hope that can help

best

Henri

To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/8670c2f2-b506-473b-ae59-f6c1166e9829n%40googlegroups.com.

[Dima Pasechnik]

On Mon, 14 Aug 2023, 09:32 'Michel VAN DEN BERGH' via sage-support, <sage-s...@googlegroups.com> wrote:

I was unable to get the distro sage to work. I compiled sage from source and this solved the problem. Sad though since I would have preferred to use the distro version.

we are not involved in building distribution packages - this should be an Ubuntu bug report.

On Sunday, August 13, 2023 at 6:55:16 PM UTC+2 Jan Groenewald wrote:

Hi

Does this happen with a user other than your own? Even root will do for a quick test.

Perhaps pip installed packages or other repositories are conflicting. Also try

LC_ALL=C sage

Regards,

Jan

On Sun, 13 Aug 2023 at 18:14, 'Michel VAN DEN BERGH' via sage-support <sage-s...@googlegroups.com> wrote:

Hi,

Today I installed sage on Ubuntu 22.04 using

apt install sagemath

Sadly after typing 'sage' the program crashes. The crash seems to be related to Cython. I am attaching the crash report.

What are my options?

Best regards,

Michel

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[Michel VAN DEN BERGH]

On Monday, August 14, 2023 at 1:41:51 PM UTC+2 Dima Pasechnik wrote:

On Mon, 14 Aug 2023, 09:32 'Michel VAN DEN BERGH' via sage-support, <sage-s...@googlegroups.com> wrote:

I was unable to get the distro sage to work. I compiled sage from source and this solved the problem. Sad though since I would have preferred to use the distro version.

we are not involved in building distribution packages - this should be an Ubuntu bug report.

Fair enough. Next time I try and it still doesn't work I will file one!

[Michel VAN DEN BERGH]

On Monday, August 14, 2023 at 10:45:32 AM UTC+2 Henri Girard wrote:

Did you make a link to your compiled version ?

I compiled sage in sage (which us the base dir) after I sudo ln -s /sage /usr/bin/sage then you get sage wide

I don't use the sage executable, but I do "import sage" inside the python interpreter (I only run scripts). This used to work with the distro sage, but I have not found how to make that work with the compiled sage.  Do you know how to achieve this?

Michel

 

I installed the ubuntu version which is working fine : sudo apt install sagemath* jupyter* to get all libs working

hope that can help

best

Henri

--

[Michel VAN DEN BERGH]

On Tuesday, August 15, 2023 at 8:11:35 AM UTC+2 Michel VAN DEN BERGH wrote:

On Monday, August 14, 2023 at 10:45:32 AM UTC+2 Henri Girard wrote:

Did you make a link to your compiled version ?

I compiled sage in sage (which us the base dir) after I sudo ln -s /sage /usr/bin/sage then you get sage wide

I don't use the sage executable, but I do "import sage" inside the python interpreter (I only run scripts). This used to work with the distro sage, but I have not found how to make that work with the compiled sage.  Do you know how to achieve this?

Michel

I did some investigating and it seems that the distro sage installs sage as an honest module (it is in the file system as /usr/lib/python3/dist-packages/sage/) whereas the python that comes with the compiled sage has sage as a built-in module (it seems to be not in the file system). So it is not accessible to the global python I think.

The following is for the sage python.

$ sage --python

>>> import sage

>>> import inspect
>>> inspect.getfile(sage)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/sage_user/sage/local/var/lib/sage/venv-python3.11.1/lib/python3.11/inspect.py", line 901, in getfile
    raise TypeError('{!r} is a built-in module'.format(object))
TypeError: <module 'sage' (<_frozen_importlib_external.NamespaceLoader object at 0x7fa4431b2550>)> is a built-in module
>>>

 

[Dima Pasechnik]

On Tue, 15 Aug 2023, 07:41 'Michel VAN DEN BERGH' via sage-support, <sage-s...@googlegroups.com> wrote:

On Tuesday, August 15, 2023 at 8:11:35 AM UTC+2 Michel VAN DEN BERGH wrote:

On Monday, August 14, 2023 at 10:45:32 AM UTC+2 Henri Girard wrote:

Did you make a link to your compiled version ?

I compiled sage in sage (which us the base dir) after I sudo ln -s /sage /usr/bin/sage then you get sage wide

I don't use the sage executable, but I do "import sage" inside the python interpreter (I only run scripts). This used to work with the distro sage, but I have not found how to make that work with the compiled sage.  Do you know how to achieve this?

Michel

I did some investigating and it seems that the distro sage installs sage as an honest module (it is in the file system as /usr/lib/python3/dist-packages/sage/) whereas the python that comes with the compiled sage has sage as a built-in module (it seems to be not in the file system). So it is not accessible to the global python I think.

The following is for the sage python.

You need to either make symbolic link to the place you build Sage from source,

 or just cd to that location, and run

./sage --python

$ sage --python

>>> import sage

>>> import inspect
>>> inspect.getfile(sage)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/sage_user/sage/local/var/lib/sage/venv-python3.11.1/lib/python3.11/inspect.py", line 901, in getfile
    raise TypeError('{!r} is a built-in module'.format(object))
TypeError: <module 'sage' (<_frozen_importlib_external.NamespaceLoader object at 0x7fa4431b2550>)> is a built-in module
>>>

 

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[Jan Groenewald]

Hi

A quick web search does not bring up results pointing at the sagemath package being broken on Ubuntu 22.04.

My guess is that it is something else on your system.

Regards,

Jan

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[Michel VAN DEN BERGH]

On Tuesday, August 15, 2023 at 11:50:10 AM UTC+2 Jan Groenewald wrote:

Hi

A quick web search does not bring up results pointing at the sagemath package being broken on Ubuntu 22.04.

My guess is that it is something else on your system.

Regards,

Jan

On my laptop the sagemath package works.  However I have issues installing it on my desktop. An obvious guess is that the CPU is too old. It is an Intel Core 2 Duo E8400 (which was launched in January 2008).   One can imagine that the distro sage is compiled with certain optimizations which are not supported by my CPU.

Michel

.

[Michel VAN DEN BERGH]

I think I found a relevant report

https://groups.google.com/g/sage-devel/c/Lj-wx4xm0N4

The error reported there is similar to what I am seeing.

Michel

 

.

[Jan Groenewald]

Hi

Yes, the old CPU is the most likely answer.

I have a lab full of duo core which started crashing a year or two ago (some parts of sage at least, like anything using numpy),

which you found in an old report of mine.

Regards,

Jan

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