#173 closed enhancement (invalid)
[invalid] mathematica raises matrices / QQ to large powers much more quickly than SAGE
Reported by: | was | Owned by: | somebody |
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Priority: | minor | Milestone: | sage-2.8.15 |
Component: | basic arithmetic | Keywords: | |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | Work issues: | ||
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
If you make a messy 3x3 matrix over QQ and raise it to a large power in SAGE it takes WAY longer than in Mathematica.
sage: time m = matrix(QQ,3,range(9)); m[0,0] =20; n=m^(-1) CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.05 sage: time k=n^20000 CPU times: user 0.56 s, sys: 0.00 s, total: 0.56 s Wall time: 0.57 sage: nm = magma(n) sage: time l=nm^20000 CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.40 sage: nm = mathematica(n) sage: time a=nm^20000 CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.03
SAGE should do whatever mathematica is doing...
Change History (7)
comment:1 Changed 15 years ago by
- Priority changed from major to minor
comment:2 Changed 15 years ago by
- Description modified (diff)
comment:3 Changed 14 years ago by
- Milestone set to sage-feature
comment:4 Changed 14 years ago by
- Resolution set to invalid
- Status changed from new to closed
comment:5 Changed 14 years ago by
"The computer allows you to make mistakes faster than any other invention, with the possible exception of handguns and tequila."
comment:6 Changed 14 years ago by
- Milestone changed from sage-feature to sage-2.8.15
- Summary changed from mathematica raises matrices / QQ to large powers much more quickly than SAGE to [invalid] mathematica raises matrices / QQ to large powers much more quickly than SAGE
comment:7 Changed 14 years ago by
"The computer allows you to make mistakes faster than any other invention, with the possible exception of handguns and tequila."
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It turns out that this is invalid. I was misusing Mathematica. See this thread