From: tornaria <tornaria@users.noreply.github.com>
To: ml@inbox.vuxu.org
Subject: Re: maxima (sbcl) arithmetic is very slow
Date: Tue, 04 Jan 2022 20:55:42 +0100 [thread overview]
Message-ID: <20220104195542.SAyxkFxHvXPe4eYdtfx9NuRDEu_Dghg_ijIkMRO9WX4@z> (raw)
In-Reply-To: <gh-mailinglist-notifications-41a7ca26-5023-4802-975b-f1789d68868e-void-packages-34849@inbox.vuxu.org>
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New comment by tornaria on void-packages repository
https://github.com/void-linux/void-packages/issues/34849#issuecomment-1005125647
Comment:
Indeed:
```
$ rmaxima
Maxima 5.45.1 https://maxima.sourceforge.io
using Lisp SBCL 2.2.0
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) :lisp (require :sb-gmp "/usr/lib/sbcl/contrib/sb-gmp.fasl")
(SB-GMP)
(%i1) :lisp (sb-gmp:install-gmp-funs)
(%i1) showtime : true $
Evaluation took 0.0001 seconds (0.0000 elapsed) using 0 bytes.
(%i2) a : 10^(10^5) $
Evaluation took 0.0015 seconds (0.0010 elapsed) using 3.578 KB.
(%i3) b : a^1280 $
Evaluation took 1.5059 seconds (1.5080 elapsed) using 50.689 MB.
(%i4)
```
Caveats:
- this only works if `sbcl` is installed (for the file "/usr/lib/sbcl/contrib/sb-gmp.fasl")
- moreover the version of sbcl used to compile maxima has to match the version of sbcl used to compile `sb-gmp.fasl` (rn maxima was compiled with 2.1.11 but sbcl is at 2.2.0)
- the "require" statement needs the full path to `sb-gmp.fasl` (not a real problem)
next prev parent reply other threads:[~2022-01-04 19:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-04 19:19 [ISSUE] " tornaria
2022-01-04 19:47 ` tornaria
2022-01-04 19:55 ` tornaria [this message]
2022-01-04 21:16 ` tornaria
2022-01-11 15:55 ` [ISSUE] [CLOSED] " leahneukirchen
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