Dear All,
Today I managed to install sage 4.7.2 from source on Suse Linux Enterprise
Server (sles) 11 SP 1. Almost all doctest pass except for:
The following tests failed:
sage -t devel/sage/sage/sandpiles/sandpile.py # Time out
sage -t devel/sage/sage/schemes/elliptic_curves/heegner.py # 171
doctests failed
sage -t
devel/sage/sage/quadratic_forms/quadratic_form__ternary_Tornaria.py # 13
doctests failed
sage -t devel/sage/sage/modules/free_module.py # 1 doctests failed
The timeout is I guess not a real problem, but the errors in the three
other ones are memory related. In heegner.py
and quadratic_form__ternary_Tornaria.py there are a lot of errors of the
form:
**********************************************************************
File
"/home/sageadmin/sage-4.7.2/devel/sage/sage/schemes/elliptic_curves/heegner.py",
line 4675:
sage: H.optimal_embeddings(-7, 1, R)
Exception raised:
Traceback (most recent call last):
File "/home/sageadmin/sage-4.7.2/local/bin/ncadoctest.py", line 1231,
in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/home/sageadmin/sage-4.7.2/local/bin/sagedoctest.py", line 38,
in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File "/home/sageadmin/sage-4.7.2/local/bin/ncadoctest.py", line 1172,
in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_183[4]>", line 1, in <module>
H.optimal_embeddings(-Integer(7), Integer(1), R)###line 4675:
sage: H.optimal_embeddings(-7, 1, R)
File
"/home/sageadmin/sage-4.7.2/local/lib/python/site-packages/sage/schemes/elliptic_curves/heegner.py",
line 4686, in optimal_embeddings
reps = Q.representation_vector_list(n+1)[-1]
File
"/home/sageadmin/sage-4.7.2/local/lib/python/site-packages/sage/quadratic_forms/quadratic_form__ternary_Tornaria.py",
line 574, in representation_vector_list
n, m, vs = self._pari_().qfminim(2*(B-1), maxvectors)
File "gen.pyx", line 10073, in sage.libs.pari.gen._pari_trap
(sage/libs/pari/gen.c:47644)
File "gen.pyx", line 9423, in
sage.libs.pari.gen.PariInstance.allocatemem (sage/libs/pari/gen.c:44254)
File "gen.pyx", line 9938, in sage.libs.pari.gen.init_stack
(sage/libs/pari/gen.c:46996)
MemoryError: Unable to allocate 1024000000 bytes memory for PARI.
**********************************************************************
and of the form:
**********************************************************************
File
"/home/sageadmin/sage-4.7.2/devel/sage/sage/schemes/elliptic_curves/heegner.py",
iled example:
sig_on_count()
Expected:
0
Got:
32
**********************************************************************
I think 1024000000 byte wich is about 1 gigabyte is a bit to much to
allocate just at once. So the main question is where does this number come
from and why is it so huge?
The test in free module.py fails as follows:
sage -t "devel/sage/sage/modules/free_module.py"
**********************************************************************
File "/home/sageadmin/sage-4.7.2/devel/sage/sage/modules/free_module.py",
line 2128:
sage: I = K.basis_matrix()
Exception raised:
Traceback (most recent call last):
File "/home/sageadmin/sage-4.7.2/local/bin/ncadoctest.py", line 1231,
in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/home/sageadmin/sage-4.7.2/local/bin/sagedoctest.py", line 38,
in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File "/home/sageadmin/sage-4.7.2/local/bin/ncadoctest.py", line 1172,
in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_61[5]>", line 1, in <module>
I = K.basis_matrix()###line 2128:
sage: I = K.basis_matrix()
File
"/home/sageadmin/sage-4.7.2/local/lib/python/site-packages/sage/modules/free_module.py",
line 2137, in basis_matrix
A = MAT.identity_matrix()
File
"/home/sageadmin/sage-4.7.2/local/lib/python/site-packages/sage/misc/cachefunc.py",
line 555, in __call__
w = self._cachedmethod._instance_call(self._instance, *args, **kwds)
File
"/home/sageadmin/sage-4.7.2/local/lib/python/site-packages/sage/misc/cachefunc.py",
line 778, in _instance_call
return self._cachedfunc.f(inst, *args, **kwds)
File
"/home/sageadmin/sage-4.7.2/local/lib/python/site-packages/sage/matrix/matrix_space.py",
line 1010, in identity_matrix
A = self.zero_matrix().__copy__()
File "matrix_rational_dense.pyx", line 520, in
sage.matrix.matrix_rational_dense.Matrix_rational_dense.__copy__
(sage/matrix/matrix_rational_dense.c:8044)
File "matrix_rational_dense.pyx", line 149, in
sage.matrix.matrix_rational_dense.Matrix_rational_dense.__cinit__
(sage/matrix/matrix_rational_dense.c:5077)
MemoryError
**********************************************************************
So it probably also wants to allocate to much memory, but the error message
is a bit unhelpfull this time.
For completeness. I originally doctested with sage with 4 threads in
parralel, but the failing is not because of this since I got the same
results when running the test seperately. The memory usage of the machine
after having run all tests:
sageadmin@sage:~> free -m
total used free shared buffers cached
Mem: 2008 1953 54 0 10 387
-/+ buffers/cache: 1555 452
Swap: 0 0 0
I hope someone can shed some light on this extreme merory usage for pari.
--
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