<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">It could well be a bug in the MA77
interface - it hasn't had that much use. Can you supply us with a
code that reproduces the issue?<br>
<br>
Regards,<br>
<br>
Jonathan.<br>
<br>
On 23/01/13 14:43, Mehmet Ersin YUMER wrote:<br>
</div>
<blockquote
cite="mid:CAJPRsZ3xugRJwqg0OY4vk-BSPbWnTAazZuAWX13gC+A-1U+hYw@mail.gmail.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<p dir="ltr">I don't think it is the reason. The problem is well
behaved and convex. All other linear solvers except ma77 are
able to solve it correctly.</p>
<div class="gmail_quote">On Jan 23, 2013 3:13 AM, "Mostafa.B" <<a
moz-do-not-send="true" href="mailto:bakhtvar@gmail.com">bakhtvar@gmail.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">I had a similar problem with other linear
sparse solvers, ipopt failing after only one iteration,
however it turned out that the problems was in my
optimization model, talking more specifically about my case,
it was a division by zero resulting from bad placing of
variables, have a check on your model anyways.</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Tue, Jan 22, 2013 at 7:25 PM,
Mehmet Ersin YUMER <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:meyumer@gmail.com"
target="_blank">meyumer@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 dir="ltr">Hi Stefan,
<div><br>
</div>
<div>Thanks for your reply. I am still having problems
but the problem changed a little. I am able to
successfully build ipopt trunk version with ma77 but
cannot solve the optimization problem with it, here
is a breakdown:</div>
<div><br>
</div>
<div>- I checked out the trunk version with svn, and
placed a coinhsl directory into
$[ipopt_dir]/ThirdParty/HSL/ whose contents are
the contents of coinhsl-2012.12.21.tar.gz.</div>
<div><br>
</div>
<div>- run ./get.Metis and ./get.Mumps from their
directories.</div>
<div><br>
</div>
<div>- Create build directory in $[ipopt_dir].</div>
<div><br>
</div>
<div>- Run ../configure, make, make test, make
install from within $[ipopt_dir]/build/</div>
<div><br>
</div>
<div>Using the newly created libraries and include
files in the build directory, I am able to solve a
test problem succesfully with ma27, ma57, and mumps.
However, when I try solving the problem with ma77, I
get the output below, and Ipopt terminates. As can
be understood from above, I did not use any flags
while configuring Ipopt. Let me know if you can
guess what the problem might be with ma77.</div>
<div><br>
</div>
<div>Thanks.</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<p><b>******************************************************************************</b></p>
<p><b>This program contains Ipopt, a library for
large-scale nonlinear optimization.</b></p>
<p><b> Ipopt is released as open source code under
the Eclipse Public License (EPL).</b></p>
<p><b> For more information visit <a
moz-do-not-send="true"
href="http://projects.coin-or.org/Ipopt"
target="_blank">http://projects.coin-or.org/Ipopt</a></b></p>
<p><b>******************************************************************************</b></p>
<p><br>
</p>
<p><b>This is Ipopt version trunk, running with
linear solver ma77.</b></p>
<p><br>
</p>
<p><b>Number of nonzeros in equality constraint
Jacobian...: 6008</b></p>
<p><b>Number of nonzeros in inequality constraint
Jacobian.: 0</b></p>
<p><b>Number of nonzeros in Lagrangian
Hessian.............: 158992</b></p>
<p><br>
</p>
<p><b>Total number of
variables............................: 6008</b></p>
<p><b> variables with only lower
bounds: 0</b></p>
<p><b> variables with lower and upper
bounds: 6008</b></p>
<p><b> variables with only upper
bounds: 0</b></p>
<p><b>Total number of equality
constraints.................: 759</b></p>
<p><b>Total number of inequality
constraints...............: 0</b></p>
<p><b> inequality constraints with only lower
bounds: 0</b></p>
<p><b> inequality constraints with lower and upper
bounds: 0</b></p>
<p><b> inequality constraints with only upper
bounds: 0</b></p>
<p><br>
</p>
<p><b>iter objective inf_pr inf_du lg(mu)
||d|| lg(rg) alpha_du alpha_pr ls</b></p>
<p><b> 0 4.0613987e+02 9.58e-03 5.36e+01 0.0
0.00e+00 - 0.00e+00 0.00e+00 0</b></p>
<p><b>WARNING: Problem in step computation;
switching to emergency mode.</b></p>
<p><b> 1r 4.0613987e+02 9.58e-03 9.01e+02 0.0
0.00e+00 - 0.00e+00 0.00e+00R 1</b></p>
<p><b>WARNING: Problem in step computation;
switching to emergency mode.</b></p>
<p><b>Restoration phase is called at point that is
almost feasible,</b></p>
<p><b> with constraint violation 0.000000e+00.
Abort.</b></p>
<p><b>Restoration phase in the restoration phase
failed.</b></p>
<p><br>
</p>
<p><b>Number of Iterations....: 1</b></p>
<p><br>
</p>
<p><b> (scaled)
(unscaled)</b></p>
<p><b>Objective...............:
4.0613987440593672e+02 4.0613987440593672e+02</b></p>
<p><b>Dual infeasibility......:
5.3643302289191944e+01 5.3643302289191944e+01</b></p>
<p><b>Constraint violation....:
9.5803704550541102e-03 9.5803704550541102e-03</b></p>
<p><b>Complementarity.........:
9.9000001999999998e-01 9.9000001999999998e-01</b></p>
<p><b>Overall NLP error.......:
5.3643302289191944e+01 5.3643302289191944e+01</b></p>
<p><br>
</p>
<p><br>
</p>
<p><b>Number of objective function evaluations
= 2</b></p>
<p><b>Number of objective gradient evaluations
= 2</b></p>
<p><b>Number of equality constraint evaluations
= 2</b></p>
<p><b>Number of inequality constraint evaluations
= 0</b></p>
<p><b>Number of equality constraint Jacobian
evaluations = 2</b></p>
<p><b>Number of inequality constraint Jacobian
evaluations = 0</b></p>
<p><b>Number of Lagrangian Hessian evaluations
= 2</b></p>
<p><b>Total CPU secs in IPOPT (w/o function
evaluations) = 0.144</b></p>
<p><b>Total CPU secs in NLP function evaluations
= 0.059</b></p>
<p><br>
</p>
<p><b>EXIT: Restoration Failed!</b></p>
<p><br>
</p>
<p><br>
</p>
<p><b>*** The problem FAILED!</b></p>
</div>
<div class="gmail_extra">
<div><br>
<br>
<div class="gmail_quote">On Mon, Jan 21, 2013 at
9:14 PM, Stefan Vigerske <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:stefan@math.hu-berlin.de"
target="_blank">stefan@math.hu-berlin.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hi,<br>
<br>
Ipopt 3.10 does not support MA77 yet.<br>
Ipopt/trunk has been setup to work with MA77,
you could try that out.<br>
<br>
Stefan
<div>
<div><br>
<br>
On 01/22/2013 01:38 AM, Mehmet Ersin YUMER
wrote:<br>
</div>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div>
<div>
Hi,<br>
<br>
Up to now I have compiled and used ipopt
with ma27 & ma19. Because of an<br>
increase in problem size, I now need to
use it with ma77. However, I could<br>
not build ipopt with it. It seems like
it is not able to locate the file in<br>
$[ipopt_dir]/Thirdparty/hsl/<br>
<br>
Should the file name be different than:
ma77ad.f90 ?<br>
<br>
Source files I am using for ipopt are
from version 3.10.0.<br>
<br>
Thanks.<br>
<br>
<br>
<br>
</div>
</div>
_______________________________________________<br>
Ipopt mailing list<br>
<a moz-do-not-send="true"
href="mailto:Ipopt@list.coin-or.org"
target="_blank">Ipopt@list.coin-or.org</a><br>
<a moz-do-not-send="true"
href="http://list.coin-or.org/mailman/listinfo/ipopt"
target="_blank">http://list.coin-or.org/mailman/listinfo/ipopt</a><br>
<br>
</blockquote>
<br>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
</div>
<span><font color="#888888">-- <br>
Mehmet Ersin Yumer
</font></span></div>
</div>
<br>
_______________________________________________<br>
Ipopt mailing list<br>
<a moz-do-not-send="true"
href="mailto:Ipopt@list.coin-or.org" target="_blank">Ipopt@list.coin-or.org</a><br>
<a moz-do-not-send="true"
href="http://list.coin-or.org/mailman/listinfo/ipopt"
target="_blank">http://list.coin-or.org/mailman/listinfo/ipopt</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</blockquote>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Ipopt mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Ipopt@list.coin-or.org">Ipopt@list.coin-or.org</a>
<a class="moz-txt-link-freetext" href="http://list.coin-or.org/mailman/listinfo/ipopt">http://list.coin-or.org/mailman/listinfo/ipopt</a>
</pre>
</blockquote>
<br>
<br>
<p>--
<BR>Scanned by iCritical.
</p><br>
</body>
</html>