Huge speedup for union WAS: Maxima/Ecl on 32-bit machine cannot evaluate "apply(union, listify({{..}}))"
Subject: Huge speedup for union WAS: Maxima/Ecl on 32-bit machine cannot evaluate "apply(union, listify({{..}}))"
From: Richard Hennessy
Date: Mon, 8 Sep 2008 00:57:21 -0400
I noticed some bugs that I have not been reporting. One was if the list is too large like around 1,000,000 you lose the connection to Maxima when creating it. The same thing happens with large strings and stringout.
Rich
------------Original Message------------
From: "Judy Toth"<judyt2009 at comcast.net>
To: "Barton Willis" <willisb at unk.edu>, "Stavros Macrakis" <macrakis at alum.mit.edu>
Cc: maxima at math.utexas.edu, "Robert Dodier" <robert.dodier at gmail.com>, maxima-bounces at math.utexas.edu
Date: Mon, Sep-8-2008 0:42 AM
Subject: Re: [Maxima] Huge speedup for union WAS: Maxima/Ecl on 32-bit machine cannot evaluate "apply(union, listify({{..}}))"
How big? What I am working on lately is very large lists, about 30000-50000 elements each one a sublist of 5 elements.
Rich
------------Original Message------------
From: Barton Willis <willisb at unk.edu>
To: "Stavros Macrakis" <macrakis at alum.mit.edu>
Cc: "Robert Dodier" <robert.dodier at gmail.com>, maxima at math.utexas.edu, maxima-bounces at math.utexas.edu
Date: Thu, Sep-4-2008 12:00 PM
Subject: Re: [Maxima] Huge speedup for union WAS: Maxima/Ecl on 32-bit machine cannot evaluate "apply(union, listify({{..}}))"
It was my bug that converted the nice core nset algorithms from O(n)
to O(n log(n)). My apologies to Stavros and rest of the Maxima
community.
We need users to test nset (and all of Maxima) with big problems.
Barton
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