It may be related, but I don't think it's exactly the same issue. For
example, the following, involving no square root, still leaks memory:
for i in [1,..,20000]:
if i%100 == 0:
print(i);
print(get_memory_usage());
C = continued_fraction(pi^i);
C.denominator(100);
On Thursday, July 23, 2020 at 4:27:46 PM UTC-5, Dave Morris wrote:
>
> Is this the issue that was reported in Trac #27185
> <https://trac.sagemath.org/ticket/27185> (defect: sqrt memory leak)?
>
> On Thursday, July 23, 2020 at 3:12:07 PM UTC-6, Spencer Dembner wrote:
>>
>> Yup- what you wrote gives me the same result as far as climbing memory
>> usage.
>>
>> On Thursday, July 23, 2020 at 4:07:23 PM UTC-5, vdelecroix wrote:
>>>
>>> Thanks for your report.
>>>
>>> Actually, it does not seem to have much to do with continued
>>> fractions but rather with the symbolic ring
>>>
>>> sage[4]: for i in [2500000,..,3000000]:
>>> .......: if i%1000 == 0:
>>> .......: print(i);
>>> .......: print(get_memory_usage())
>>> .......: _ = RIF(sqrt(i))
>>>
>>> Le 23/07/2020 à 18:30, Spencer Dembner a écrit :
>>> > When using continued_fraction to compute denominators of continued
>>> fraction
>>> > convergents, I'm encountering what seems to be a memory leak. I'm
>>> running
>>> > SageMath 9.0 on Windows 10 64-bit. If I run the following,
>>> >
>>> > for i in [2500000,..,2600000]:
>>> > if i%1000 == 0:
>>> > print(i);
>>> > print(get_memory_usage());
>>> > C = continued_fraction(sqrt(i));
>>> > C.denominator(100);
>>> >
>>> > then I see memory usage steadily climbing as I iterate through the
>>> loop. On
>>> > the other hand, if I initialize sqrt(i) as an algebraic number, memory
>>> > usage is essentially stable:
>>> >
>>> > for i in [2500000,..,2600000]:
>>> > if i%1000 == 0:
>>> > print(i);
>>> > print(get_memory_usage());
>>> > if sqrt(i) not in QQ:
>>> > K.<sqrti> = QuadraticField(i);
>>> > C = continued_fraction(sqrti);
>>> > C.denominator(100);
>>> >
>>>
>>
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