Probably this shares the same bug as [1]
Calling `NumberField().class_group().order()` in a loop of size N:
#10^3 leaks: 40.03 MB 40026112 pari= [7950, 1451665]
#10^4 leaks: 338.49 MB 338493440 pari= [83505, 19297360]
The leak appears to be in the pari heap.
Code .sage:
====
#Author Georgi Guninski Wed Sep 4 12:58:18 PM UTC 2024
#10^3 leaks: 40.03 MB 40026112 pari= [7950, 1451665]
#10^4 leaks: 338.49 MB 338493440 pari= [83505, 19297360]
import psutil,gc,sys
from sage.all import EllipticCurve
ps = psutil.Process()
num=10**3 #10**5 // 2
x=var('x')
def leaknf5(N=10**3):
gc.collect()
base = ps.memory_info().rss
for A2 in range(1, N):
Kn=NumberField(x^2+A2,'w')
m=Kn.class_group().order()
gc.collect()
mem = ps.memory_info().rss - base
print(f"{mem/1e6 :.2f} MB ",mem," pari=",pari.getheap())
leaknf5(10**4)
====
[1]: https://groups.google.com/g/sage-devel/c/fWBls6YbXmw
Memory leak in |EllipticCurve([n,0]).root_number()| and problem in
algebraic geometry
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