Buiding sage on a Raspberry Pi 4B

[Jaap Spies]

Why? Because it is possible. And the OS Raspbian is distributed with a version of Mathematica 12.0

First attempt was building sage-8.9. Just did a 'make' after downloading. The RPi 4 showed unstable.

The little computer stalled a few times. Power off and power on. After 12 hours there was a running sage.

Building the docs failed consistently. I ran a few tests.

Secondly I did a "MAKE='make -j4' make". After a few hick-ups I changed to 'make -j3' and got sage running, but building the docs

failed on the same spot.

Third was a try to build sage-9.0.beta9 with 'make -j3'. Again a few freezes, but the building of the docs succeeded!

The same with sage-9.0.beta10. Testing with 'make ptestlong' lasted long. It was good my RPi 4 had active cooling with temperatures

up to 75 degrees Celcius. There were 60 failures, some segmentation faults some Time Outs.

Most of the errors were resolved by running a bash script to test files individually.

The building of sage-9.0.rc0 ended in problems with building scipy. My idea of computers being deterministic is chocked.

I started with a clean source. And to my surprise only a few hick-ups and after 'make ptestlong' 56 failed tests.

Most of them were resolved. See above.

As we speak now sage-9.0.rc1 is doing a 'make ptestlong'. Probably will finish in a few hours.

My conclusion so far: Sage can be built on a Rarpberry Pi 4, but certainly not unattended.

Most remarkable:

Saved trace to /home/pi/.sage/crash_logs/crash_s8ljau3w.log
------------------------------------------------------------------------
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.
------------------------------------------------------------------------

**********************************************************************

sage -t --long --warn-long 248.7 src/sage/rings/function_field/function_field.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/schemes/elliptic_curves/ell_rational_field.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/schemes/elliptic_curves/isogeny_class.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/modular/pollack_stevens/modsym.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/function_field/function_field_valuation.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/padics/padic_base_leaves.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/tableau.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/rings/valuation/augmented_valuation.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/schemes/hyperelliptic_curves/hyperelliptic_padic_field.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/root_system/root_lattice_realization_algebras.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/modular/modform_hecketriangle/readme.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/structure/coerce_dict.pyx  # 1 doctest failed
sage -t --long --warn-long 248.7 src/sage/schemes/elliptic_curves/constructor.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/crystals/kirillov_reshetikhin.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/shifted_primed_tableau.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/categories/finite_monoids.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/root_system/integrable_representations.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/crystals/littelmann_path.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/tests.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/doc/ca/intro/index.rst  # Timed out
sage -t --long --warn-long 248.7 src/sage/modular/abvar/homspace.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/groups/libgap_morphism.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/function_field/differential.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/combinat/posets/poset_examples.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/tests/books/computational-mathematics-with-sagemath/mpoly_doctest.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/algebras/lie_algebras/verma_module.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/padics/padic_valuation.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/rings/complex_number.pyx  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/geometry/fan.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/function_field/element.pyx  # Timed out
sage -t --long --warn-long 248.7 src/sage/schemes/elliptic_curves/descent_two_isogeny.pyx  # Timed out
sage -t --long --warn-long 248.7 src/sage/geometry/fan_morphism.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/schemes/elliptic_curves/cardinality.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/plane_partition.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/schemes/toric/toric_subscheme.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/libs/pari/tests.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/graphs/bipartite_graph.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/polynomial/polynomial_ring.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/combinat/matrices/latin.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/number_field/number_field_base.pyx  # Timed out
sage -t --long --warn-long 248.7 src/sage/groups/abelian_gps/abelian_aut.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/geometry/fan_isomorphism.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/structure/factorization.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/categories/finite_permutation_groups.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/combinat/designs/difference_matrices.py  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/schemes/toric/homset.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/misc/weak_dict.pyx  # 11 doctests failed
sage -t --long --warn-long 248.7 src/sage/rings/polynomial/polynomial_quotient_ring_element.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/number_field/small_primes_of_degree_one.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/modules/quotient_module.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/cpython/dict_del_by_value.pyx  # 1 doctest failed
sage -t --long --warn-long 248.7 src/sage/rings/valuation/scaled_valuation.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/arith/rational_reconstruction.pyx  # Killed due to segmentation fault
sage -t --long --warn-long 248.7 src/sage/rings/padics/padic_capped_relative_element.pyx  # Timed out
sage -t --long --warn-long 248.7 src/sage/rings/padics/misc.py  # Timed out
sage -t --long --warn-long 248.7 src/sage/structure/parent.pyx  # Timed out

[Dima Pasechnik]

Hoi Jaap,

it's interesting to dig more into these segfaults, they might be due
to Rasberry Pi CPU being ARM,
and we didn't test Sage on ARM for the last 4-5 years.

Dima

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[Samuel Lelievre]

Mon 2019-12-30 15:24:59 UTC, Dima Pasechnik a écrit :

Hoi Jaap,

it's interesting to dig more into these segfaults, they might be due
to Rasberry Pi CPU being ARM,
and we didn't test Sage on ARM for the last 4-5 years.

In fact our download site has an arm section:

  http://files.sagemath.org/linux/arm/index.html

where the last binary offered is

  sage-6.9-armv7l-Linux-Ubuntu_12.10.tar.gz

A little over a year ago, end of Nov 2018, one user

built SageMath 8.4 on ARM and asked a question

on Ask Sage about packaging it up.

  How to pack sage-8.4 armv7l built as compressed

  re-distributable binaries?

  https://ask.sagemath.org/question/44489

We could think about setting up ARM patchbots

and an ARM buildbot.

[Samuel Lelievre]

This pull request from last week on the pexpect repo

has the news that Travis-CI added ARM64 support.

- ARM64: Add ARM64 jobs in Travis-CI

  https://github.com/pexpect/pexpect/pull/612

See the recent Travis-CI blog posts about arm support

(October 2019) and Power support (December 2019).

- Multi-CPU architecture support for your builds

  https://blog.travis-ci.com/2019-10-07-multi-cpu-architecture-support

- Build your open source projects on IBM Power and IBM Z CPU architecture

  https://blog.travis-ci.com/2019-11-12-multi-cpu-architecture-ibm-power-ibm-z

[Jaap Spies]

Hi Dima,

I don't understand what I see and I hate that. Seeing 4 CPU's producing heat, four instances of python 3 gathering CPU time.

producing 0 test of 0.00s duration. There is something not OK in the Raspberry Pi system.

I don't trust the memory management system at all.

make ptestlong ended:

----------------------------------------------------------------------

sage -t --long --warn-long 253.8 src/sage/rings/tests.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/schemes/elliptic_curves/ell_rational_field.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/rings/function_field/function_field.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/schemes/cyclic_covers/cycliccover_finite_field.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/combinat/sf/macdonald.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/combinat/ncsf_qsym/ncsf.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/algebras/lie_algebras/classical_lie_algebra.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/function_field/function_field_valuation.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/number_field/number_field.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/geometry/cone.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/btquotients/pautomorphicform.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/arith/misc.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/graphs/strongly_regular_db.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/structure/coerce_dict.pyx  # 1 doctest failed

sage -t --long --warn-long 253.8 src/sage/modular/modform_hecketriangle/abstract_space.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/modular/modform/find_generators.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/modform/cuspidal_submodule.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/schemes/toric/chow_group.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/groups/matrix_gps/finitely_generated.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/function_field/ideal.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/misc/functional.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/number_field/totallyreal_rel.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/modular/hypergeometric_motive.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/categories/loop_crystals.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/algebras/iwahori_hecke_algebra.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/schemes/curves/projective_curve.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/overconvergent/genus0.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/combinat/permutation.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/number_field/number_field_ideal.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/combinat/designs/orthogonal_arrays_find_recursive.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/geometry/triangulation/element.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/schemes/elliptic_curves/period_lattice.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/schemes/elliptic_curves/ell_field.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/arithgroup/congroup_gammaH.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/number_field/galois_group.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/valuation/limit_valuation.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/combinat/e_one_star.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/combinat/designs/latin_squares.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/combinat/designs/evenly_distributed_sets.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/geometry/polyhedron/combinatorial_polyhedron/polyhedron_face_lattice.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/calculus/wester.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/groups/artin.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/symbolic/ring.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/structure/coerce.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/modsym/tests.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/modform/ambient_g1.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/tests/books/judson-abstract-algebra/fields-sage.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/polynomial/multi_polynomial_element.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/repl/preparse.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/tests/book_stein_modform.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/modular/modform/tests.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/homology/simplicial_complex_morphism.py  # Killed due to segmentation fault

sage -t --long --warn-long 253.8 src/sage/algebras/quaternion_algebra_element.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/structure/factorization.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/sets/set.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/quadratic_forms/quadratic_form__split_local_covering.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/misc/weak_dict.pyx  # 11 doctests failed

sage -t --long --warn-long 253.8 src/sage/modular/modform/eis_series.py  # Timed out

sage -t --long --warn-long 253.8 src/sage/schemes/curves/point.py  # Timed out

sage -t --long --warn-long 253.8 src/doc/en/thematic_tutorials/lie/affine.rst  # Timed out

sage -t --long --warn-long 253.8 src/sage/cpython/dict_del_by_value.pyx  # 1 doctest failed

sage -t --long --warn-long 253.8 src/sage/rings/real_interval_absolute.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/finite_rings/hom_finite_field_givaro.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/padics/local_generic_element.pyx  # Timed out

sage -t --long --warn-long 253.8 src/sage/rings/number_field/number_field_element.pyx  # Timed out

----------------------------------------------------------------------

Total time for all tests: 37560.2 seconds

    cpu time: 38702.7 seconds

    cumulative wall time: 48875.0 seconds

I'll make a bash script to do the tests stand alone.

See:

sage -t --long --warn-long 248.7 src/sage/arith/rational_reconstruction.pyx  # Killed due to segmentation fault

But now:

pi@rasp4:~/sagemath/sage-9.0.rc1 $ ./sage -t --long  src/sage/arith/rational_reconstruction.pyx

too many failed tests, not using stored timings

Running doctests with ID 2019-12-30-23-07-03-da62f8e9.

Git branch: develop

Using --optional=build,dochtml,memlimit,sage

Doctesting 1 file.

sage -t --long src/sage/arith/rational_reconstruction.pyx

    [2 tests, 6.48 s]

----------------------------------------------------------------------

All tests passed!

----------------------------------------------------------------------

Total time for all tests: 6.6 seconds

    cpu time: 6.4 seconds

    cumulative wall time: 6.5 seconds

pi@rasp4:~/sagemath/sage-9.0.rc1 $ 

This is Monte Carlo!

[Jaap Spies]

Saved trace to /home/pi/.sage/crash_logs/crash_ydume0lk.log

------------------------------------------------------------------------

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.

------------------------------------------------------------------------

**********************************************************************

----------------------------------------------------------------------

sage -t --long --warn-long 253.8 src/sage/rings/tests.py  # Killed due to segmentation fault

----------------------------------------------------------------------

Total time for all tests: 40.2 seconds

    cpu time: 0.0 seconds

    cumulative wall time: 0.0 seconds

pi@rasp4:~/sagemath/sage-9.0.rc1 $ 

[Timo Kaufmann]

For what it's worth, I regularly build and test sage-on-nixos on aarch64. The testsuite shows no issues, except some transient timeouts which may or may not be caused by the architecture.

[Jaap Spies]

On Monday, December 30, 2019 at 11:21:34 PM UTC+1, Jaap Spies wrote:

I'll make a bash script to do the tests stand alone.

bash test_errors_rc1 >> err.log 2>&1 &

Resume:

./sage -t --long  src/sage/rings/tests.py # Killed due to segmentation fault 

./sage -t --long  src/sage/schemes/elliptic_curves/ell_rational_field.py # Killed due to segmentation fault 

./sage -t --long  src/sage/rings/function_field/function_field.py  # All tests passed

./sage -t --long  src/sage/schemes/cyclic_covers/cycliccover_finite_field.py  # All tests passed

./sage -t --long  src/sage/combinat/sf/macdonald.py  # All tests passed

./sage -t --long  src/sage/combinat/ncsf_qsym/ncsf.py # Killed due to segmentation fault 

./sage -t --long  src/sage/algebras/lie_algebras/classical_lie_algebra.py  # All tests passed

./sage -t --long  src/sage/rings/function_field/function_field_valuation.py  # All tests passed

./sage -t --long  src/sage/rings/number_field/number_field.py  # All tests passed

./sage -t --long  src/sage/geometry/cone.py  # All tests passed

./sage -t --long  src/sage/modular/btquotients/pautomorphicform.py  # All tests passed

./sage -t --long  src/sage/arith/misc.py  # All tests passed

./sage -t --long  src/sage/graphs/strongly_regular_db.pyx  # All tests passed

./sage -t --long  src/sage/structure/coerce_dict.pyx # 1 failure len(LE) Expected 1 Got: 50 

./sage -t --long  src/sage/modular/modform_hecketriangle/abstract_space.py # Killed due to segmentation fault 

./sage -t --long  src/sage/modular/modform/find_generators.py  # All tests passed

./sage -t --long  src/sage/modular/modform/cuspidal_submodule.py # Timed out  

./sage -t --long  src/sage/schemes/toric/chow_group.py  # All tests passed

./sage -t --long  src/sage/groups/matrix_gps/finitely_generated.py  # All tests passed

./sage -t --long  src/sage/rings/function_field/ideal.py  # All tests passed

./sage -t --long  src/sage/misc/functional.py  # All tests passed

./sage -t --long  src/sage/rings/number_field/totallyreal_rel.py  # All tests passed

./sage -t --long  src/sage/modular/hypergeometric_motive.py  # All tests passed

./sage -t --long  src/sage/categories/loop_crystals.py  # All tests passed

./sage -t --long  src/sage/algebras/iwahori_hecke_algebra.py  # All tests passed

./sage -t --long  src/sage/schemes/curves/projective_curve.py  # All tests passed

./sage -t --long  src/sage/modular/overconvergent/genus0.py  # All tests passed

./sage -t --long  src/sage/combinat/permutation.py  # All tests passed

./sage -t --long  src/sage/rings/number_field/number_field_ideal.py  # All tests passed

./sage -t --long  src/sage/combinat/designs/orthogonal_arrays_find_recursive.pyx  # All tests passed

./sage -t --long  src/sage/geometry/triangulation/element.py  # All tests passed

./sage -t --long  src/sage/schemes/elliptic_curves/period_lattice.py  # All tests passed

./sage -t --long  src/sage/schemes/elliptic_curves/ell_field.py  # All tests passed

./sage -t --long  src/sage/modular/arithgroup/congroup_gammaH.py # Timed out total time 1832.3 seconds 

./sage -t --long  src/sage/rings/number_field/galois_group.py  # All tests passed

./sage -t --long  src/sage/rings/valuation/limit_valuation.py  # All tests passed

./sage -t --long  src/sage/combinat/e_one_star.py  # All tests passed

./sage -t --long  src/sage/combinat/designs/latin_squares.py  # All tests passed

./sage -t --long  src/sage/combinat/designs/evenly_distributed_sets.pyx  # Timed out

./sage -t --long  src/sage/geometry/polyhedron/combinatorial_polyhedron/polyhedron_face_lattice.pyx # All tests passed  

./sage -t --long  src/sage/calculus/wester.py   # All tests passed

./sage -t --long  src/sage/groups/artin.py   # All tests passed

./sage -t --long  src/sage/symbolic/ring.pyx   # All tests passed

./sage -t --long  src/sage/structure/coerce.pyx   # All tests passed

./sage -t --long  src/sage/modular/modsym/tests.py   # All tests passed

./sage -t --long  src/sage/modular/modform/ambient_g1.py   # All tests passed

./sage -t --long  src/sage/tests/books/judson-abstract-algebra/fields-sage.py   # All tests passed

./sage -t --long  src/sage/rings/polynomial/multi_polynomial_element.py   # All tests passed

./sage -t --long  src/sage/repl/preparse.py   # All tests passed

./sage -t --long  src/sage/tests/book_stein_modform.py   # All tests passed

./sage -t --long  src/sage/modular/modform/tests.py # Times out 1822.7 seconds 

./sage -t --long  src/sage/homology/simplicial_complex_morphism.py   # All tests passed

./sage -t --long  src/sage/algebras/quaternion_algebra_element.py   # All tests passed

./sage -t --long  src/sage/structure/factorization.py   # All tests passed

./sage -t --long  src/sage/sets/set.py # Times out 1821.5 seconds 

./sage -t --long  src/sage/quadratic_forms/quadratic_form__split_local_covering.py   # All tests passed

./sage -t --long  src/sage/misc/weak_dict.pyx  # 11 doctests failed

./sage -t --long  src/sage/modular/modform/eis_series.py   # All tests passed

./sage -t --long  src/sage/schemes/curves/point.py   # All tests passed

./sage -t --long  src/doc/en/thematic_tutorials/lie/affine.rst   # All tests passed

./sage -t --long  src/sage/cpython/dict_del_by_value.pyx # 1 doctest failed 

./sage -t --long  src/sage/rings/real_interval_absolute.pyx   # All tests passed

./sage -t --long  src/sage/rings/finite_rings/hom_finite_field_givaro.pyx   # All tests passed

./sage -t --long  src/sage/rings/padics/local_generic_element.pyx   # All tests passed

./sage -t --long  src/sage/rings/number_field/number_field_element.pyx   # All tests passed

 As I said most failures are transient. I can post the file err.log, but maybe it is better to run only the failing tests.

[Jaap Spies]

I did run the failing tests! This is really frustrating.

./sage -t --long  src/sage/rings/tests.py # Killed due to segmentation fault NOW: All test passed!!

./sage -t --long  src/sage/schemes/elliptic_curves/ell_rational_field.py # Killed due to segmentation fault NOW: All test passed!!

./sage -t --long  src/sage/combinat/ncsf_qsym/ncsf.py # Killed due to segmentation fault NOW: All test passed!!

./sage -t --long  src/sage/structure/coerce_dict.pyx # 1 failure len(LE) Expected 1 Got: 50 

./sage -t --long  src/sage/modular/modform_hecketriangle/abstract_space.py # Killed due to segmentation fault NOW: All test passed!!

./sage -t --long  src/sage/modular/modform/cuspidal_submodule.py # Timed out  NOW: All test passed!!  in NB 51.16 seconds

./sage -t --long  src/sage/modular/arithgroup/congroup_gammaH.py # Timed out total time 1832.3 seconds NOW: All test passed in 11.74 seconds

./sage -t --long  src/sage/combinat/designs/evenly_distributed_sets.pyx  # Timed out NOW:  All test passed in 8.11 seconds

./sage -t --long  src/sage/modular/modform/tests.py # Times out 1822.7 seconds NOW: All test passed in 4.12 seconds 

./sage -t --long  src/sage/sets/set.py # Times out 1821.5 seconds  NOW: All test passed in 2.08 seconds

./sage -t --long  src/sage/misc/weak_dict.pyx  # 11 doctests failed

./sage -t --long  src/sage/cpython/dict_del_by_value.pyx # 1 doctest failed 

[Volker Braun]

Which hardware are you using, and how long does it take to bulid and run the tests?

[Timo Kaufmann]

Our community build box[1] which has 64 (relatively weak) cores and plenty of RAM. So not really comparable with a raspberry pi, but still ARM/aarch64 (not sure if OP is using their rpi with a 32bit or 64 bit OS). Because of all the parallelism, building sagelib takes maybe 10-15 minutes and the test suite something under half an hour I think. Most of the dependencies are taken from the nix binary caches (where they have been built on similar aarch64 machines), or they are built locally if they're not available in the caches yet.

[1] https://github.com/nix-community/aarch64-build-box

[Thierry Dumont]

Are you sure you don't have a problem with the size of the ram ? You certainly have spool virtual memory partition.

I have run some programs on a PI (3) (not Sage), and when the memory was full, I have got some segmentation faults (this should not happen, but..). This was on raspbian, two years ago.

Yours,

t.d.

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[Thierry Dumont]

I wanted to say "...have NO spool ..."

Apologize.

t.d.

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