Re: [Help-glpk] testing glpk 4.46 on 64-bit platform

[Robbie Morrison]

Hello Andrew

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To:          Robbie Morrison <address@hidden>
Subject:     Re: [Help-glpk] testing glpk 4.46 on 64-bit platform
Message-ID: <address@hidden>
From:        Andrew Makhorin <address@hidden>
Date:        Thu, 28 Apr 2011 20:25:49 +0400
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> Robbie,
>
>> Just email a tarball.
>
> Please see:
> http://lists.gnu.org/archive/html/help-glpk/2011-04/msg00083.html
>
> Andrew Makhorin

My 64-bit system:

  Ubuntu 10.04 Linux 2.6.32-31-generic
  2.40GHz Intel Core i5-520M / 4096MiB RAM
  gcc version 4.4.3

I just tested GLPK 4.46 as you requested using the file
WOOD1P.SIF from the NETLIB suite.

  http://www.numerical.rl.ac.uk/cute/netlib.html
  ftp://ftp.numerical.rl.ac.uk/pub/cuter/netlib.tar.gz

  $ ll wood1p.sif
  -r--r----- 1 robbie users 2288302 Apr 28 19:24 wood1p.sif

Everything is basically good.  But I have the following
observations.

1/ During configuration, I guess this statement is what
was sought:

  checking whether to use zlib data compression library... no

2/ The 'wood1p.sif' file needed the blank lines removed
before GLPSOL would process the file.  That could be a
bit fussy -- at the very least, a message stating that
blank lines are causing problems would be helpful.

3/ Your test 2 gave a small difference on output --
leading and trailing zeros were added or the decimal
points were omitted as required (I much prefer the GLPK
formatting), for example (GLPK second):

    RHS       TOTALL              1.   BMIN01             .85
    RHS1      TOTALL               1   BMIN01            0.85

4/ Finally, and of more concern, GLPSOL ate my file
when I incorrectly issued these commands:

  $ ls
  oops.sif.gz
  $ ./glpsol --check oops.sif --wmps oops.sif.gz
  $ ls
  <nothing!>

GLPSOL should really not do that!

always happy to do testing
Robbie
---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Institute for Energy Engineering (IET)
Technical University of Berlin (TU-Berlin), Germany
University email (redirected) : address@hidden
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