<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Ok i solved the errors.<br>
<br>
Now i debuged both the libs and the source code in release mode.
Solving Time is 1/3. Still the standalone executable that i
downloaded is 2.5 times faster...<br>
<br>
Is there any idea?<br>
<br>
On 10/10/2012 17:21, Iain Dunning wrote:<br>
</div>
<blockquote
cite="mid:CAKupjyUc-ZXV0t1NOtW0pzpy1js-01h8hYoA_S6eagHoNazjxA@mail.gmail.com"
type="cite">Compile everything in release mode - both the
libraries and your project.
<div><br>
</div>
<div>- Iain<br>
<br>
<div class="gmail_quote">On Wed, Oct 10, 2012 at 10:20 AM,
Christos <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:chtsolak@gmail.com" target="_blank">chtsolak@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Yes you both were right. I have compiled libraries in
debug mode.<br>
Thank you.<br>
<br>
Now i compiled them in release mode, but i get 177 same
errors:<br>
<br>
error LNK2038: mismatch detected for
'_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value
'2' in test.obj <br>
<br>
What's this?<br>
(i am trying to compile project in debug mode)
<div>
<div class="h5"><br>
<br>
<br>
On 10/10/2012 16:59, Iain Dunning wrote:<br>
</div>
</div>
</div>
<div>
<div class="h5">
<blockquote type="cite">I wrote that guide.
<div>Is it possible you are building your program in
"Debug" mode? If the lib files are large, it
suggests they are being built with debugging
information...</div>
<div>Changing to "Release" mode could create speed
ups of that order.</div>
<div><br>
</div>
<div>Cheers,</div>
<div>Iain<br>
<br>
<div class="gmail_quote">On Wed, Oct 10, 2012 at
4:39 AM, Christos <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:chtsolak@gmail.com"
target="_blank">chtsolak@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>In order to help you help me i compiled
my code with this method:<a
moz-do-not-send="true"
href="https://projects.coin-or.org/Cbc/wiki/VSSetup"
target="_blank">https://projects.coin-or.org/Cbc/wiki/VSSetup</a><br>
<br>
And as i can see lib files from repository
are much smaller then these created with
the above method.<br>
<br>
Is this matter?
<div>
<div><br>
<br>
On 9/10/2012 23:00, Christos wrote:<br>
</div>
</div>
</div>
<div>
<div>
<blockquote type="cite">
<div>Very useful info!<br>
<br>
I downloaded
Cbc-2.7.5-win64-intel11.1 and run
cbc.exe in the bin folder. <br>
I used 2 methods-commands for
solving, branchAndBound and solve.<br>
<br>
They both solved it almost 10 times
faster!!!<br>
<br>
Now, to come to a solution, i need
to know what's the differnece
between solving with stand alone and
simply by calling the solver via my
code which was implemented in MS
visual studio 2010..<br>
<br>
If you can help me with this, i
would have find the solution to my
big problem!<br>
I am waiting impatiently for your
words.<br>
<br>
Thank you!<br>
<br>
On 9/10/2012 22:26, David Ibarra
Gómez wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr"> You can find the CBC
binaries here: <a
moz-do-not-send="true"
href="https://projects.coin-or.org/CoinBinary"
target="_blank">https://projects.coin-or.org/CoinBinary</a> or
(here <a moz-do-not-send="true"
href="http://www.coin-or.org/download/binary/Cbc/"
target="_blank">http://www.coin-or.org/download/binary/Cbc/</a>).
You can test different versions
<div><br>
</div>
<div>From the shell you can call
the executable binary. Then you
just:</div>
<div><br>
</div>
<div>1. Import MPS file by just
typing "import mpsfilename.mps" </div>
<div>2. and then you can solve it
just typing "branchAndCut"</div>
<div><br>
</div>
<div>Then compare the time to
solve with the API.</div>
<div><br>
</div>
<div>A random google search to
find a "recipe" could be (at the
end of page 6): <a
moz-do-not-send="true"
href="http://wpweb2.tepper.cmu.edu/fmargot/coin/proj5.pdf"
style="font-size:10pt"
target="_blank">http://wpweb2.tepper.cmu.edu/fmargot/coin/proj5.pdf</a></div>
<div><br>
</div>
<div>Regards</div>
<div>
<div><br>
</div>
<div><br>
<br>
<div>
<hr>Date: Tue, 9 Oct 2012
20:50:04 +0300<br>
From: <a
moz-do-not-send="true"
href="mailto:chtsolak@gmail.com"
target="_blank">chtsolak@gmail.com</a><br>
To: <a
moz-do-not-send="true"
href="mailto:dibarra21@hotmail.com"
target="_blank">dibarra21@hotmail.com</a><br>
CC: <a
moz-do-not-send="true"
href="mailto:cbc@list.coin-or.org"
target="_blank">cbc@list.coin-or.org</a><br>
Subject: Re: [Cbc] solving
time in C++ >> time in
Gams<br>
<br>
<div>i have the latest
version, 2.7.7....<br>
<br>
I solve it by using the
default cbc solver, (i am
not getting involved in
the solver) with this way:<br>
<br>
<i><small>solver1.loadProblem(numcols,
numrows, start, index,
value, collb, colub,
obj, rowlb, rowub);<br>
CbcModel
model(solver1);<br>
CbcMain0(model);<br>
const char *
argv2[]={"DAS","-solve","-quit"};
</small></i><i><small><br>
CbcMain1(3,argv2,model);
</small></i><br>
<br>
So, i do not think that
it's ommiting the presolve
step, am i wrong?<br>
<br>
Where can i find the
latest version, and how
can i load an mps file?<br>
<br>
Thank you<br>
<br>
On 9/10/2012 20:42, David
Ibarra Gómez wrote:<br>
</div>
<blockquote>
<div dir="ltr"> Hi,
<div><br>
</div>
<div>there are several
things that can cause
this:</div>
<div><br>
</div>
<div>
<ul>
<li>different
solvers version,</li>
<li>solving is a
complex task: <span
style="font-size:10pt">presolve (cuting planes, heuristics, ...) and
then b</span><span
style="font-size:10pt">ranch and bound (cut). If you omit the first part
or you do not do
exactly the same
steps result
could be
different.</span></li>
</ul>
<div><br>
</div>
Did you try to solve
using CBC CLI (stand
alone executable) ?</div>
<div><br>
</div>
<div>Regards<br>
<br>
<div>
<hr>Date: Tue, 9 Oct
2012 12:16:49 +0300<br>
From: <a
moz-do-not-send="true"
href="mailto:chtsolak@gmail.com" target="_blank">chtsolak@gmail.com</a><br>
To: <a
moz-do-not-send="true"
href="mailto:cbc@list.coin-or.org" target="_blank">cbc@list.coin-or.org</a><br>
Subject: [Cbc]
solving time in C++
>> time in
Gams<br>
<br>
Hi all again,<br>
<br>
I have 1 question
for you, if i solve
it, i won't bother
you again <span><span>
:-P </span></span><br>
<br>
I am using cbc in
order to make an
executable via MS
visual studio which
solves a model.<br>
In order to solve
it, takes 60 mins<br>
<br>
I have made the same
problem with GAMS
and solved it in 30
secs, 120 times
faster!!<br>
<br>
Is it because of an
error in modeling or
due to the different
interface?
(exe-GAMS)<br>
<br>
Why is there this
enormous difference?<br>
<br>
<br>
Thank you in
advance.<i><small><i><small><br>
</small></i></small></i><br>
<i><small><i><small><br>
</small></i><br>
</small></i> <br>
_______________________________________________
Cbc mailing list <a
moz-do-not-send="true" href="mailto:Cbc@list.coin-or.org"
target="_blank">Cbc@list.coin-or.org</a>
<a
moz-do-not-send="true"
href="http://list.coin-or.org/mailman/listinfo/cbc" target="_blank">http://list.coin-or.org/mailman/listinfo/cbc</a></div>
</div>
</div>
</blockquote>
<br>
</div>
</div>
</div>
</div>
</blockquote>
<br>
</blockquote>
<br>
</div>
</div>
</div>
<br>
_______________________________________________<br>
Cbc mailing list<br>
<a moz-do-not-send="true"
href="mailto:Cbc@list.coin-or.org"
target="_blank">Cbc@list.coin-or.org</a><br>
<a moz-do-not-send="true"
href="http://list.coin-or.org/mailman/listinfo/cbc"
target="_blank">http://list.coin-or.org/mailman/listinfo/cbc</a><br>
<br>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<font face="'courier new', monospace"><b>Iain
Dunning</b></font>
<div><font face="'courier new', monospace"><a
moz-do-not-send="true"
href="http://orc.scripts.mit.edu/people/student.php?name=idunning"
target="_blank">PhD Student</a> / </font><span
style="font-family:'courier new',monospace"><a
moz-do-not-send="true"
href="http://web.mit.edu/orc/www/"
target="_blank">MIT Operations Research
Center</a></span></div>
<div>
<div><font face="'courier new', monospace"><a
moz-do-not-send="true"
href="http://www.iaindunning.com/"
target="_blank">www.iaindunning.com</a></font></div>
</div>
<br>
</div>
</blockquote>
<br>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<font face="'courier new', monospace"><b>Iain Dunning</b></font>
<div><font face="'courier new', monospace"><a
moz-do-not-send="true"
href="http://orc.scripts.mit.edu/people/student.php?name=idunning"
target="_blank">PhD Student</a> / </font><span
style="font-family:'courier new',monospace"><a
moz-do-not-send="true" href="http://web.mit.edu/orc/www/"
target="_blank">MIT Operations Research Center</a></span></div>
<div>
<div><font face="'courier new', monospace"><a
moz-do-not-send="true"
href="http://www.iaindunning.com/" target="_blank">www.iaindunning.com</a></font></div>
</div>
<br>
</div>
</blockquote>
<br>
</body>
</html>