#17456: Sppedup TIDES interface
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Reporter: mmarco | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.5
Component: interfaces | Keywords: TIDES,
Merged in: | Authors: Miguel Marco
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Right now the interface to TIDES does a lot of symbolic expresion
comparisons, which is very slow. This patch changes those comparisons to
the corresponding strings, which is much faster.
As an example, the following problem:
{{{
sage: from sage.interfaces.tides import genfiles_mintides
sage: f(x,t) = [sin(x*t)+cos(x)/sqrt(1+x^2+log(x)-5*exp(x^2+1))]
sage: %time genfiles_mintides('/dev/null', '/dev/null', f, [1], 0, 10, 10,
output='/dev/null')
CPU times: user 9.31 s, sys: 46 ms, total: 9.35 s
Wall time: 9.32 s
}}}
With the patch is reduced to:
{{{
sage: from sage.interfaces.tides import genfiles_mintides
sage: f(x,t) = [sin(x*t)+cos(x)/sqrt(1+x^2+log(x)-5*exp(x^2+1))]
sage: %time genfiles_mintides('/dev/null', '/dev/null', f, [1], 0, 10, 10,
output='/dev/null')
CPU times: user 838 ms, sys: 24 ms, total: 862 ms
Wall time: 854 ms
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/17456>
Sage <http://www.sagemath.org>
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