[Ipopt] Error message when using the matlab interface

[Peter Carbonetto]

Paul,

    Normally when you build the IPOPT libraries, it will automatically 
create a Makefile in that Ipopt/contrib/Matlab/src directory, wherever you 
specified the target dirctory. Did you look in there after building the 
library?

Peter Carbonetto, Ph.D.
Postdoctoral Fellow
Dept. of Human Genetics
University of Chicago

> I downloaded Ipopt and got it compiled on a Linux 64 bit machine. I put
> the compiled Ipopt stuff into "~/Mex/Ipopt" which contains the following
> subdirectories:
> bin  include  lib  share
>
> Since I use matlab 7.9 (2009b 64Bit) I wanted to compile the matlab
> interface. The interface is located in
> $COINOPT/Ipopt/contrib/MatlabInterface/src.
> Within that directory should be a Makefile but instead I only found a
> Makefile.in file which was completely useless since all variables in
> that file weren't set. Therefore I created a Makefile on my own. This is
> the Makefile:
>
> [MAKEFILE]
> MATLAB_HOME = /net/matlab/Matlab2009b
> MEXSUFFIX   = mexa64
> PATH_TO_IPOPT_COMPILATION=/homes/numerik/hoven/Mex/Ipopt
> SRCDIR = /homes/numerik/hoven/CoinIpopt/Ipopt/contrib/MatlabInterface/src
>
> ###############################################################################################
> DESTINATION_DIR = $(PATH_TO_IPOPT_COMPILATION)/MatlabInterface
> MEX = $(MATLAB_HOME)/bin/mex
> #Pay attention to add a by your matlab version supported g++
> CXX         = /usr/site-local/bin/g++-4.2
> CXXFLAGS    = -fPIC -DMX_COMPAT_32 -DMATLAB_MEX_FILE -DMWINDEXISINT
>
> INCLUDES    = -I$(PATH_TO_IPOPT_COMPILATION)/include/coin
> -I$(MATLAB_HOME)/extern/include
> #Static linking
> MEXFLAGS    = -cxx CC='$(CXX)' CXX='$(CXX)' LD='$(CXX)' -lm
> -L$(PATH_TO_IPOPT_COMPILATION)/lib/coin -lipopt
> -L$(PATH_TO_IPOPT_COMPILATION)/lib/coin/ThirdParty -lcoinlapack
> -lcoinblas -lcoinhsl -lamplsolver \
>                -L/usr/site-local/lib/gcc/x86_64-unknown-linux-gnu/4.2.4
> -lgfortran -ldl -largeArrayDims
> #Dynamic linking
> #MEXFLAGS    = -cxx CC='$(CXX)' CXX='$(CXX)' LD='$(CXX)' -lm
> -L$(PATH_TO_IPOPT_COMPILATION)/lib/coin -lipopt -largeArrayDims
>
> TARGET = ipopt.$(MEXSUFFIX)
> OBJS   = matlabjournal.o        \
>         matlabexception.o      \
>         matlabfunctionhandle.o \
>         iterate.o              \
>         ipoptoptions.o         \
>         options.o              \
>         sparsematrix.o         \
>         callbackfunctions.o    \
>         matlabinfo.o           \
>         matlabprogram.o        \
>         ipopt.o
>
> all: $(TARGET)
>
> install: $(TARGET)
>        if test -d $(DESTINATION_DIR); then : ; else mkdir
> $(DESTINATION_DIR); fi
>        cp $(SRCDIR)/../ipopt.m $(TARGET) $(DESTINATION_DIR)
>        cp -r $(SRCDIR)/../examples $(DESTINATION_DIR)
>
> uninstall:
>        rm -f $(DESTINATION_DIR)/ipopt.m
> $(DESTINATION_DIR)/ipopt.$(MEXSUFFIX)
>
> $(TARGET): $(OBJS)
>        $(MEX) $(MEXFLAGS) -output $@ $^
>
> %.o: %.cpp
>        $(CXX) $(CXXFLAGS) $(INCLUDES) -o $@ -c $^
>
> clean:
>        rm -f $(OBJS) $(TARGET)
>
> distclean: clean
> [/MAKEFILE]
>
> As you can see I used the setting static linking which I noticed makes
> no difference to dynamic linking in terms of the error I encounter when
> using matlab. Anyway the compilation process works fine and the matlab
> interface is placed in a custom directory called "MatlabInterface"
> underneth ~/Mex/Ipopt. The directory contents look like this:
> ~/Mex/Ipopt/MatlabInterface> ls
> examples  ipopt.m  ipopt.mexa64
>
> examples is a directory containing some matlab m-files for testing ipopt
> matlab interface.
>
> Then I started matlab to run the test matlab program to check that the
> interface works. So I did the following
>
> matlab -nodisplay(enter)
>
>
> < M A T L A B (R) >
>
> Copyright 1984-2009 The MathWorks, Inc.
>
> Version 7.9.0.529 (R2009b) 64-bit (glnxa64)
>
> August 12, 2009
>
>
>  To get started, type one of these: helpwin, helpdesk, or demo.
>  For product information, visit www.mathworks.com.
>
> >> cd ~/Mex/Ipopt/MatlabInterface/examples/
> >> pwd
>
> ans =
>
> /homes/numerik/hoven/Mex/Ipopt/MatlabInterface/examples
>
> >> addpath /homes/numerik/hoven/Mex/Ipopt/MatlabInterface
> >> examplelasso
>
> ******************************************************************************
> This program contains Ipopt, a library for large-scale nonlinear
> optimization.
> Ipopt is released as open source code under the Eclipse Public License
> (EPL).
>         For more information visit http://projects.coin-or.org/Ipopt
> ******************************************************************************
>
> This is Ipopt version 3.9.2, running with linear solver ma27.
>
> Function "mxGetJc_700" is obsolete in file "compat32.cpp", line 292.
> (64-bit mex files using sparse matrices must be rebuilt with the
> "-largeArrayDims" option.  See the R2006b release notes for more details.)
> Exception of type: IpoptException in file "Unknown File" at line -1:
> Exception message: Unknown Exception caught in Ipopt
> Solution:
>     0
>     0
>     0
>     0
>     0
>     0
>     0
>     0
>
> >>
>
> I find this message quite strange since I added the "-largeArrayDims"
> option in the Mex compiler flags. Even so I get this error. Why?
>
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