#10262: memory leak in scalar*vector multiplication
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Reporter: dimpase | Owner: jason, was
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.6.1
Component: linear algebra | Keywords: linear algebra, memory leak
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by jason):
As I mentioned on the thread, I tracked this down to a call from the
coercion system to create an element of the parent. The coercion system
did this when it was trying to figure out the action of the number on the
vector:
The problem seems to stem from the lines
{{{
cdef Element x = X.an_element()
cdef Element y = Y.an_element()
}}}
inside of the `detect_element_action` function in `coerce_actions.pyx`.
Notice:
{{{
sage: v=vector(range(10000))
sage: get_memory_usage()
206.84765625
sage: w=v.parent().an_element()
sage: get_memory_usage()
3321.14453125
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10262#comment:3>
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