<br><font size=2 face="sans-serif">The OsiClp unit test was slightly broken
and so was skipping dual ray test. Error shows up and I should have
it fixed soon.</font>
<br>
<br><font size=2 face="sans-serif">John Forrest</font>
<br>
<br>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>Matthew Galati <magh@lehigh.edu></b>
</font>
<br><font size=1 face="sans-serif">Sent by: coin-lpsolver-bounces@list.coin-or.org</font>
<p><font size=1 face="sans-serif">04/18/2005 11:47 PM</font>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td valign=top><font size=1 face="sans-serif">coin-bcpdiscuss@list.coin-or.org,
coin-lpsolver@list.coin-or.org</font>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td valign=top>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td valign=top><font size=1 face="sans-serif">[Coin-lpsolver] Re: [Coin-bcpdiscuss]
BAP question</font></table>
<br>
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<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=3><tt>Peter,<br>
<br>
It seems to be crashing because, after finding an LP to be infeasible (in
BCP_lp_fathom), it is asking CLP for a dual ray and sending this to BCP_restore_feasibility
- but CLP returns NULL for the dual ray. <br>
<br>
Is anyone using BCP plus a recent version of CLP to do pricing?<br>
<br>
Matt</tt></font><font size=3><br>
<br>
<br>
</font>
<br><font size=2 color=blue>Hi Peter,<br>
<br>
I am sorry that the discussion list is not as active as you might hope.
In the future, if your question is not answered by bcpdiscuss, you should
try the general coin discussion list. There are only a few people on this
list, but many on coin-discuss.<br>
<br>
I was able to repeat the error. It looks like the dual vector (pi) is NULL
at the point where it crashes. Last time I tried this (over one year ago),
it was working fine. So, something must have changed in BCP or CLP. When
I have some time, I will debug it and get back to you.<br>
<br>
Thanks,<br>
Matt<br>
<br>
<br>
<br>
------------------------------<br>
------------------------------<br>
<br>
Yes the example is right one from the link. And I am using Linux, </font>
<br><font size=2 color=blue>By looking at the par.par file, it is using
AAP_datafile ../Data/small/6.1.aap.</font>
<br><font size=2 color=blue>The reason I didn't put the question to the
discussion list, no one answers my previous questions.</font>
<br><font size=3> </font>
<br><font size=2 color=blue>Thanks,</font>
<br><font size=3> </font>
<br><font size=2 color=blue>Peter.<br>
</font>
<br><font size=3>Sending this again.... this time I removed the long LOG
file.<br>
<br>
Matt<br>
</font>
<br><font size=3>Hi Heesu,<br>
<br>
I am forwarding your question to COIN's BCP discussion list. I have not
used BCP in a long time - and some things may have changed.<br>
<br>
Can you tell us more about what type of environment you are running in
(Linux? Unix?), etc. Also, which example instance did you try? Is
this the AAP_BP example from </font><a href=http://sagan.ie.lehigh.edu/coin/COIN_EXAMPLES/AAP_BP/Doc/aap/index.html><font size=3 color=blue><u>http://sagan.ie.lehigh.edu/coin/COIN_EXAMPLES/AAP_BP/Doc/aap/index.html</u></font></a><font size=3>
?<br>
<br>
I will try to repeat it when I have some free time. Has anyone else used
AAP_BP? Had any trouble?<br>
<br>
Matt<br>
</font>
<br><font size=3><tt>-- <br>
Matthew Galati - Optimization Developer<br>
SAS Institute - Analytical Solutions<br>
Phone 919-531-0332, R5327 <br>
Fax 919-677-4444<br>
</tt></font><a href=http://coral.ie.lehigh.edu/%7Emagh><font size=3 color=blue><tt><u>http://coral.ie.lehigh.edu/~magh</u></tt></font></a><font size=3><tt><br>
</tt></font><a href=http://ordlnx2.na.sas.com/projects/OptWiki><font size=3 color=blue><tt><u>http://ordlnx2.na.sas.com/projects/OptWiki</u></tt></font></a><font size=3><tt><br>
</tt></font><a href=http://www.sas.com/technologies/analytics/optimization/><font size=3 color=blue><tt><u>http://www.sas.com/technologies/analytics/optimization/</u></tt></font></a>
<br><font size=3><br>
<br>
-------- Original Message -------- </font>
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<td width=17% valign=top>
<div align=right><font size=3><b>Subject: </b></font></div>
<td width=82%><font size=3>BAP question</font>
<tr>
<td valign=top>
<div align=right><font size=3><b>Date: </b></font></div>
<td><font size=3>Fri, 15 Apr 2005 15:38:39 -0500</font>
<tr>
<td valign=top>
<div align=right><font size=3><b>From: </b></font></div>
<td><font size=3>Heesu Hwang </font><a href=mailto:hxh9528@exchange.uta.edu><font size=3 color=blue><u><hxh9528@exchange.uta.edu></u></font></a>
<tr>
<td valign=top>
<div align=right><font size=3><b>To: </b></font></div>
<td><a href=mailto:magh@lehigh.edu><font size=3 color=blue><u><magh@lehigh.edu></u></font></a></table>
<br><font size=3><br>
</font>
<br><font size=3><tt>Dear, M.V. Galati.<br>
<br>
My name is Heesu Hwang, and I am a Ph.D student in IMSE of University of<br>
Texas at Arlington, Texas, USA.<br>
My current research is about generating columns using COIN/BCP.<br>
I came across your example and have tried to run it after compilation.<br>
It has given some results, however didn't show them all, terminating with<br>
<br>
"Segmentation fault" message.<br>
<br>
I am not good a Unix, but usually I've got that kind of messages when I<br>
used pointers improperly or too much memory spaces.<br>
<br>
Attached is the result.<br>
Could you give me some comments on it?<br>
<br>
Sincerely,<br>
<br>
Heesu Hwang.<br>
</tt></font>
<br>
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