<div>Andreas</div>
<div>Thanks for the prompt reply. Sorry about the typo, I had actually tried "mumps_mem_percent"</div>
<div>I am using IPopt3.8.0 on Windows and it says: Unknown keyword "mums_mem_percent"<br><br></div>
<div class="gmail_quote">On Wed, Jul 21, 2010 at 1:44 AM, Andreas Waechter <span dir="ltr"><<a href="mailto:andreasw@watson.ibm.com">andreasw@watson.ibm.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Hi
<div class="im"><br><br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">I tried to fiddle with the alleged "mump_mem_percent option" but ipopt came<br>back to me saying that was not a recognized option.<br>
</blockquote><br></div>Try "mumps_mem_percent" with an "s" before the first underscore.<br><br>Regards,<br><font color="#888888"><br>Andreas</font>
<div>
<div></div>
<div class="h5"><br><br>On Tue, 20 Jul 2010, Saqib Ilyas wrote:<br><br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Hi all<br>I download the Windows binary for IpOpt. I didn't have enough time to<br>compile from source or to download and compile not-included solvers. I have<br>
an AMPL model that, when I try to solve with IpOpt, it gives the following<br>error. Any clues what is going on? I have 2 GB RAM on a Windows XP machine.<br>I tried to fiddle with the alleged "mump_mem_percent option" but ipopt came<br>
back to me saying that was not a recognized option. Error dump follows:<br><br>******************************************************************************<br>This program contains Ipopt, a library for large-scale nonlinear<br>
optimization.<br>Ipopt is released as open source code under the Common Public License<br>(CPL).<br> For more information visit <a href="http://projects.coin-or.org/Ipopt" target="_blank">http://projects.coin-or.org/Ipopt</a><br>
******************************************************************************<br>NOTE: You are using Ipopt by default with the MUMPS linear solver.<br> Other linear solvers might be more efficient (see Ipopt<br>documentation).<br>
<br>This is Ipopt version 3.8.0, running with linear solver mumps.<br>Number of nonzeros in equality constraint Jacobian...: 0<br>Number of nonzeros in inequality constraint Jacobian.: 30888<br>Number of nonzeros in Lagrangian Hessian.............: 617760<br>
MUMPS returned INFO(1) =-13 - out or memory.<br>In some cases it helps to decrease the value of the option<br>"mumps_mem_percent".<br>Total number of variables............................: 32175<br> variables with only lower bounds: 0<br>
variables with lower and upper bounds: 32175<br> variables with only upper bounds: 0<br>Total number of equality constraints.................: 0<br>Total number of inequality constraints...............: 936<br>
inequality constraints with only lower bounds: 0<br> inequality constraints with lower and upper bounds: 0<br> inequality constraints with only upper bounds: 936<br>iter objective inf_pr inf_du lg(mu) ||d|| lg(rg) alpha_du<br>
alpha_pr ls<br> 0 2.7042410e+002 0.00e+000 1.46e+001 -1.0 0.00e+000 - 0.00e+000<br>0.00e+00<br>0 0<br>MUMPS returned INFO(1) =-13 - out or memory.<br>In some cases it helps to decrease the value of the option<br>"mumps_mem_percent".<br>
WARNING: Problem in step computation; switching to emergency mode.<br>Restoration phase is called at point that is almost feasible,<br> with constraint violation 0.000000e+000. Abort.<br>Number of Iterations....: 0<br> (scaled) (unscaled)<br>
Objective...............: 2.7042410056253124e+002 2.7042410056253124e+002<br>Dual infeasibility......: 1.4603015700000002e+001 1.4603015700000002e+001<br>Constraint violation....: 0.0000000000000000e+000 0.0000000000000000e+000<br>
Complementarity.........: 9.9000001999999998e-001 9.9000001999999998e-001<br>Overall NLP error.......: 1.4603015700000002e+001 1.4603015700000002e+001<br><br>Number of objective function evaluations = 1<br>
Number of objective gradient evaluations = 1<br>Number of equality constraint evaluations = 0<br>Number of inequality constraint evaluations = 1<br>Number of equality constraint Jacobian evaluations = 0<br>
Number of inequality constraint Jacobian evaluations = 1<br>Number of Lagrangian Hessian evaluations = 1<br>Total CPU secs in IPOPT (w/o function evaluations) = 0.828<br>Total CPU secs in NLP function evaluations = 0.172<br>
EXIT: Restoration Failed!<br>Ipopt 3.8.0: Restoration Phase Failed.<br>suffix ipopt_zU_out OUT;<br>suffix ipopt_zL_out OUT;<br>ampl:<br><br><br>-- <br>Muhammad Saqib Ilyas<br>PhD Student, Computer Science and Engineering<br>
Lahore University of Management Sciences<br><br></blockquote></div></div></blockquote></div><br><br clear="all"><br>-- <br>Muhammad Saqib Ilyas<br>PhD Student, Computer Science and Engineering<br>Lahore University of Management Sciences<br>