Re: [Help-glpk] [Fwd: Low performance when solve MIP problem with glp intopt in GLPK]

2013-06-27 Thread Robbie Morrison
k 1) > Performance Information when running: > CPU Usage: 25% > Memory Usage:150,900K > Page Faults:75,000 > > Regards, > John --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redi

Re: [Help-glpk] predefined execution time of glpk

2013-06-19 Thread Robbie Morrison
TH, Robbie To: "GLPK help" Subject: Re: [Help-glpk] predefined execution time of glpk Message-ID: <8e26387e1dbcecfa4f051e2dcf522ebf.squir...@my.actrix.co.nz> From:"Robbie Morrison" Date:

[Help-glpk] e: glpk Limitation? Or what is the problem

2013-06-19 Thread Robbie Morrison
int C = 30; >> int H = 30; >> int R = 6; >> >> glp_prob *lp; >> >> int ia[1 + C*H*R + C*R], ja[1 + C*H*R + C*R]; >> >> double ar[1 + C*H*R + C*R], z; >> >> cout<<"Basic matrices of LP problem are defined"&

Re: [Help-glpk] predefined execution time of glpk

2013-06-19 Thread Robbie Morrison
that works fine for simplex calls, but may not for MIP calls. This is because the time limit condition is only checked when the linear relaxations are attempted. In which case, call-backs might be required for finer-grain control? Wasn't there a thread on this issue earlier (I looked but coul

[Help-glpk] clearing prices in markets with nonconvexities

2013-06-13 Thread Robbie Morrison
of Operational Research. v164 no1 p269-285. doi:10.1016/j.ejor.2003.12.011 preprint: http://www.hks.harvard.edu/hepg/Papers/Oneill.et.al_Efficient.Market.Prices_12-9-02.pdf --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (

Re: [Help-glpk] [Fwd: Solving pure IP by calling MIP solver gives wrong status]

2013-06-04 Thread Robbie Morrison
ttp://en.wikipedia.org/wiki/Smart_pointer#C.2B.2B_smart_pointers The one to use is 'shared_ptr'. The suggestions above are not important if you have simple (and perhaps linear) flow of control, but they can be great when writing more complex applications. cheers, Robbie --- Robbie Morrison PhD stu

Re: [Help-glpk] [Bug-glpk] [Fwd: Octave glpk() possible bug]

2013-06-03 Thread Robbie Morrison
> combination, including generating test data in > Excel. Frustrating I know. But there should be an explanation somewhere. > Best regards, > > Andrew J. Lewis MSc, FLS, MRI > Simul Systems Ltd > Chelmsford, Essex, UK > www.simulsystemsltd.co.uk > M:+44 (0)7710 588318 >

Re: [Help-glpk] glpk 4.50 release information

2013-06-02 Thread Robbie Morrison
> -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > GLPK 4.50 Release Information > * > > Release date: May 24, 2013 --- Robbie Morrison PhD student -- policy-oriented energy system

Re: [Help-glpk] glpk 4.49 release information

2013-04-18 Thread Robbie Morrison
cale capacitated assignment, transportation, and minimum cost flow network problems. Management Science v20 no5 p814-821. doi:10.1287/mnsc.20.5.814 http://mansci.journal.informs.org/content/20/5/814 http://mansci.journal.informs.org/content/20/5/814.full.pdf Robbie --- Robbie Mo

Re: [Help-glpk] glpk 4.49 release information

2013-04-18 Thread Robbie Morrison
those using the new 'glp_mincost_relax4' call. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail

Re: [Help-glpk] glpk 4.49 release information

2013-04-16 Thread Robbie Morrison
llable_library#Recently_added_GLPK_APIs > IMPORTANT: All old API routines whose names begin with 'lpx_' > were removed from API level and NO MORE AVAILABLE. Noted also. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of B

Re: [Help-glpk] ELF Library

2013-04-10 Thread Robbie Morrison
Hello again Gioker A few more thoughts .. To: Robbie Morrison Subject: Re: [Help-glpk] ELF Library Message-ID: From: Giorgio Sartor <0giok...@gmail.com> Date: Wed, 10 Apr 2013 20:43:09

Re: [Help-glpk] ELF Library

2013-04-10 Thread Robbie Morrison
ust two other points. Some more details about your systems and toolchains would help. And was there a good reason to rename this thread, because the earlier history is now orphaned? HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of B

Re: [Help-glpk] Syntax error in Glpk modelling

2013-03-19 Thread Robbie Morrison
ty constraint, e.g. > > var po; > > s.t. foo: po = sum{i in I} c[i]*x[i]; > > var cost; > > s.t. bar: cost = sum{i in I} a[i]*y[i] + b[i]*x[i]; Hi Figen Thanks for transferring the answer back to the stackoverflow site for other to access. Robbie --- Robbie Morrison PhD

Re: [Help-glpk] MathP.org & google spreadsheet

2013-03-15 Thread Robbie Morrison
art. Just let me know. cheers, Robbie ps: I was not trying to suggest more tasks more you. :) --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri..

Re: [Help-glpk] MathP.org & google spreadsheet

2013-03-14 Thread Robbie Morrison
PK wikibook was always meant to support non-mainline GLPK initiatives like yours. cheers, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred)

Re: [Help-glpk] glpk solve

2013-03-13 Thread Robbie Morrison
rpreter cannot find the GLPK wrapper package. The package name you want is probably "Rglpk". Therefore, try: > install.packages("Rglpk") You also need to have the package present. Post back here if you get a new set of errors. See here for more details and hints: htt

Re: [Help-glpk] Setting initial guesses for simplex / interior-point

2013-03-07 Thread Robbie Morrison
postings might be of use: http://lists.gnu.org/archive/html/help-glpk/2011-04/msg00062.html http://lists.gnu.org/archive/html/help-glpk/2011-04/msg00081.html Also, search the list archive for "warm start": http://lists.gnu.org/archive/html/help-glpk/ HTH, Robbie --- Robbie

Re: [Help-glpk] Solving two optimization problems using the same model

2013-03-03 Thread Robbie Morrison
perl, python) and duly update your local 'mod2' MathProg file. might be of some use? Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet

Re: [Help-glpk] MILP solutions using different solvers

2013-03-02 Thread Robbie Morrison
> is not written to mps file. Probably you missed > the message displayed by glpsol like this: [snip] The GLPK wikibook now contains this information: http://en.wikibooks.org/wiki/GLPK/Troubleshooting#Objective_shift_term_ignored_when_exported Robbie --- Robbie Morrison PhD student -- policy

Re: [Help-glpk] [ANN] Mathprog Web IDE available

2013-02-18 Thread Robbie Morrison
that Matlab stores, to take just one example. Just some thoughts, particularly given that this is probably an opportune moment to consider such things. cheers, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany

Re: [Help-glpk] [Fwd: Converting AMPL Bender's Decomposition code

2013-02-06 Thread Robbie Morrison
Hello João, all To: Robbie Morrison Subject: Re: [Help-glpk] [Fwd: Converting AMPL Bender's Decomposition code Message-ID: From: =?ISO-8859-1?Q?Jo=E3o_Fl=E1vio_de_Freitas_Almeida?= Date: Wed,

Re: [Help-glpk] glpk 4.48 release information

2013-01-28 Thread Robbie Morrison
ent. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred) : rob...@actrix.co.nz [from We

Re: [Help-glpk] Problem Diagnostics

2013-01-21 Thread Robbie Morrison
oblem instance glp_minisat1 solve CNF-SAT problem instance with MiniSat So, quite possibly, nothing very much has changed, outside of that listed above. And I am guessing you won't need to go near these features. Robbie --- Robbie Morrison PhD student -- policy-oriented energy sys

[Help-glpk] MCP model translator and solver

2013-01-17 Thread Robbie Morrison
http://www.mat.univie.ac.at/~neum/software/compass/COMPASS.html http://www.mat.univie.ac.at/~neum/software/compass/schmelzerDA.pdf Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@i

Re: [Help-glpk] Problem with absolute value

2013-01-15 Thread Robbie Morrison
urse, natively: C, C++ Robbie ps: I quite agree on the step-by-step development you suggest with retreat options provided by good commit practices and log messages --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany Unive

Re: [Help-glpk] Problem with absolute value

2013-01-15 Thread Robbie Morrison
ook at this is due course. (Got a little sidetracked recently, helping with the usability of Jeff Kantor's excellent web interface to MathProg.) Robbie ps: Regarding your comments on executables glued together with scripting. Makes a lot of sense. Scripting languages include bash, awk, perl, a

Re: [Help-glpk] Need explanation for a terminal output

2013-01-14 Thread Robbie Morrison
/GLPK/Terminal_output Please let me know if you cannot find the information you need. That way, I can update the page. HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morr

Re: [Help-glpk] Optimization and Multicore GLPK

2013-01-01 Thread Robbie Morrison
remember people do ask about thread-safety from time-to-time. Maybe we should quiz them a little more about their requirements. It might be useful to dwell for a moment on what GLPK might look like in five years time. New branching algorithms, for instance. --- About to start on some wiki marku

Re: [Help-glpk] Any chance for a GLPK user group at a conference

2013-01-01 Thread Robbie Morrison
ks to react: "Candidates have until 20 January 2013 to submit their ideas for the programme of papers" Personally, the LinuxTag 2014 option has merit. I have been to quite a few past events, probably about five. Just some thoughts, Robbie --- Robbie Morrison PhD student -- policy-o

Re: [Help-glpk] Linking error in AIX 6.1 for glpk 4.47

2012-12-30 Thread Robbie Morrison
adly? In which case, you might need to repeat the experiment. Just some thoughts. HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (

Re: [Help-glpk] Optimization and Multicore GLPK

2012-12-28 Thread Robbie Morrison
f this can be improved upon. Once the real page is made, this chapter title will (more or less) be set in stone. I'll continue to work on the content over the new year break. All feedback gratefully received. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation

Re: [Help-glpk] Optimization and Multicore GLPK

2012-12-27 Thread Robbie Morrison
rize the discussion. I am also happy to be a non-technical 'git' maintainer (meaning I have no desire to approve code commits from others). It is important, and possibly vital, that this development effort succeed. best wishes, Robbie --- Robbie Morrison PhD student -- policy-oriente

Re: [Help-glpk] COIN-OR compiled with MathProg instructions and syntax highlighting

2012-12-22 Thread Robbie Morrison
Checked the hyperlinks (one had a trailing slash), proofread, and then "approved" your changes. > What happens if someone tries to print the page? My trial indicates that everything gets printed, irrespective of whether the tables are collapsed or open. Useful contribution. ch

Re: [Help-glpk] COIN-OR compiled with MathProg instructions and syntax highlighting

2012-12-21 Thread Robbie Morrison
cript all the best, Robbie ps: confirmed emacs user with thousands of lines of elisp written over the years to do all sorts of unnecessary but useful tasks :) --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email

Re: [Help-glpk] Unix batch execution

2012-12-21 Thread Robbie Morrison
onday morning to discover > the job died because I completely filled a 2 TB > filesystem with the output. All in the one subdirectory I hope. :) Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany Universit

[Help-glpk] language and clarity

2012-12-19 Thread Robbie Morrison
uot;, and thence followed attempts to translate. Ouch. best wishes, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred)

[Help-glpk] Journal of Mathematical Programming Computation

2012-12-17 Thread Robbie Morrison
, and archives submitted software with the corresponding research articles. Note the final sentence! May be worth watching out for articles in the future. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany

Re: [Help-glpk] Multithreading/parallelization

2012-12-17 Thread Robbie Morrison
ann, Ted Ralphs, Domenico Salvagnin, Daniel E Steffy, and Kati Wolter. 2011. MIPLIB 2010 : mixed integer programming library version 5. Mathematical Programming Computation v3 no2 p103-163. doi:10.1007/s12532-011-0025-9 http://mpc.zib.de/index.php/MPC/article/v

Re: [Help-glpk] Multithreading/parallelization

2012-12-15 Thread Robbie Morrison
ll stops scarce or expensive in Australia? I would endorse the use of 'git' and 'GitHub'. Indeed, the unstated question is really whether the entire project should migrate to 'GitHub' (or similar). That would solve the reintegration problem too (though this is not

Re: [Help-glpk] glpk.js

2012-12-10 Thread Robbie Morrison
e a useful project. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred) : rob...@actrix.co.nz [f

[Help-glpk] Greetings from Peru

2012-12-08 Thread Robbie Morrison
r public version control, so post any patches to the bugs list: http://en.wikibooks.org/wiki/GLPK/Help-GLPK_and_Bug-GLPK_Searchable_archive HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University e

Re: [Help-glpk] OSeMOSYS open-source energy modeling project

2012-11-29 Thread Robbie Morrison
Hi Laurent Regarding the ETEM Energy-Technology-Environment Model. To: Robbie Morrison Subject: Re: [Help-glpk] OSeMOSYS open-source energy modeling project Message-ID: From: Laurent Drouet Date: Thu

[Help-glpk] OSeMOSYS open-source energy modeling project

2012-11-29 Thread Robbie Morrison
, OSeMOSYS was being coded in Java. They must have migrated to MathProg in the interim. Kudos to Andrew, regards to all, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu

Re: [Help-glpk] SOS2 piecewise linear function example

2012-11-27 Thread Robbie Morrison
ion 4.4 -- SO document ref UG-SD-025. Transpower New Zealand, Wellington, New Zealand. http://www.ea.govt.nz/document/12594/download/industry/mo-service-providers/system-operator-market-operation-service-provider/ all the equations howz life downunder? cheers, Robbie --- Robbie

Re: [Help-glpk] MIP Solvers (i.e CBC, CPLEX, GLPK, GUROBI, LPSOLVE, SCIPC, SCIPL, SCIPS and XPRESS) Benchmark

2012-11-24 Thread Robbie Morrison
gt; http://lpsolve.sourceforge.net/5.1/mps-format.htm > > OBJSENSE is a non-standard extension. See > http://www.cenapad.unicamp.br/parque/manuais/OSL/oslweb/features/featur11.htm Please see: http://en.wikibooks.org/wiki/GLPK/Troubleshooting#MPS_formats_and_OBJSENSE I think that the

Re: [Help-glpk] MIP Solvers (i.e CBC, CPLEX, GLPK, GUROBI, LPSOLVE, SCIPC, SCIPL, SCIPS and XPRESS) Benchmark

2012-11-19 Thread Robbie Morrison
rride a "minimize" in the code, from the command line). Or am I missing something? Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Web

Re: [Help-glpk] [Fwd: Converting AMPL Bender's Decomposition code

2012-11-08 Thread Robbie Morrison
g: http://en.wikibooks.org/wiki/GLPK/Scripting_plus_MathProg This 2003 thread might also be of interest: http://lists.gnu.org/archive/html/help-glpk/2003-12/msg6.html I don't have any direct knowledge of Benders decomposition. If you get something working, can you post it back h

[Help-glpk] Meindl and Templ (2012) solver survey

2012-11-06 Thread Robbie Morrison
open-source solvers, GLPK performs well (p11). But the proprietary solvers still outperform the open-source solvers by a large margin. cheers, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redir

[Help-glpk] StackOverflow question on best open MIP solver

2012-11-06 Thread Robbie Morrison
own ad-hoc optimization library (which will be painful) Any suggestion/insight would be much appreciated" GLPK ranks well and the range of answers is also interesting. Kudos to Andrew! cheers, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Insti

Re: [Help-glpk] [Fwd: .run file equivalent in GLPK?]

2012-11-04 Thread Robbie Morrison
$ chmod u+x batch-file-name And invoke it: $ ./batch-file-name See here also (but not quite what you asked as I understand it): http://en.wikibooks.org/wiki/GLPK/Using_GLPSOL#Passing_values_via_the_command-line http://en.wikibooks.org/wiki/GLPK/Using_GLPSOL#xglpsol_bash_script HTH, Robbie -

Re: [Help-glpk] order restrictions

2012-11-02 Thread Robbie Morrison
; -- > Robin Hankin > Uncertainty Analyst > hankin.ro...@gmail.com Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineering (IET) Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berli

Re: [Help-glpk] jEdit 5.opre1 and glpkIDE plugin in Mac OS X

2012-11-01 Thread Robbie Morrison
MPL to update the wiki page. There is a brief mention now: http://en.wikibooks.org/wiki/GLPK/Cross_Platform_IDEs#jEdit Anyone who uses jEdit is free to expand this stub. cheers, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineerin

Re: [Help-glpk] order restrictions

2012-11-01 Thread Robbie Morrison
GNU MathProg (*.dat) can be found in subdirectory examples/pbn/. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineering (IET) Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de

Re: [Help-glpk] IRR (Internal Rate of Return) using MathProg

2012-09-14 Thread Robbie Morrison
nd Jingxin Wang. 2010. Economic feasibility of a woody biomass-based ethanol plant in central Appalachia. Journal of Agricultural and Resource Economics v35 no3 p522-544. http://purl.umn.edu/99118 http://ageconsearch.umn.edu/bitstream/99118/2/JARE,Dec2010,%2311F,pp52

Re: [Help-glpk] Aborting a long-running algorithm in GLPK

2012-09-11 Thread Robbie Morrison
t; Georgia Institute of Technology, Atlanta, GA, USA --- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineering (IET) Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred)

Re: [Help-glpk] [Fwd: Specify initialization for MIP]

2012-09-10 Thread Robbie Morrison
ry large so it is expected that glpk will >> take infinitely huge amount of time. But also, I have good >> initialization for the branch and bound technique used by MIP. Anyone >> having any idea how to specify initialization for the MIP as couldn't >> find in the use

Re: [Help-glpk] C API: Setting up a least-absolute-deviation

2012-09-05 Thread Robbie Morrison
fact, your welcome to my entire codebase as a tarball if you want to examine my design. As also previously mentioned, getting the solver calls correct was exacting work. But it did all work in the end. > On Sep 1, 2012, at 11:25 AM, Robbie Morrison wrote: [snip: remainder of thread] REFER

Re: [Help-glpk] financial compensation

2012-09-05 Thread Robbie Morrison
C and A >> becomes obsolete. >> My question is whether or not this problem can be formulated as a mixed >> integer linear program. >> If Yes, does it makes sense or it would be much better to apply some graph >> theory alghoritms for minimal trees, cycles etc. >

Re: [Help-glpk] Parallelisation of MILP

2012-09-04 Thread Robbie Morrison
stion, it is possible to multi-thread MIP solvers and it is done. If programming, I suggest C++11 which has native support for threaded code. http://en.wikipedia.org/wiki/C%2B%2B11 Did you really mean to send the same message three times? HTH, Robbie --- Robbie Morrison PhD student -- policy-ori

Re: [Help-glpk] AMPL book now free to download

2012-09-01 Thread Robbie Morrison
language). Can I add my thanks to Robert and his co-authors for making his book downloadable. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-ber

Re: [Help-glpk] C API: Setting up a least-absolute-deviation

2012-09-01 Thread Robbie Morrison
berg, Tim H.}, Title = {Formulation of linear optimization problems in C++ [includes MIP]}, BookTitle = {Programming languages and systems in computational economics and finance}, Editor = {Nielsen, Soren S.}, Publisher = {Kluwer Academic Publishers}, Address = {Boston, MA, USA}, Pa

Re: [Help-glpk] Assertion failed: l[k] != -DBL_MAX, Error detected in file glpios02.c at line 312

2012-08-28 Thread Robbie Morrison
Hi John To: Robbie Morrison , GLPK help Subject: Re: [Help-glpk] Assertion failed: l[k] != -DBL_MAX, Error detected in file glpios02.c at line 312 Message-ID: <1346172148.93799.yahoomail...@web120305.mail.ne1.yahoo.

Re: [Help-glpk] Assertion failed: l[k] != -DBL_MAX, Error detected in file glpios02.c at line 312

2012-08-28 Thread Robbie Morrison
mean that assertions should not be used in production code. If so, see here for a C-based solution (that could perhaps be added to the python wrapper): http://en.wikibooks.org/wiki/GLPK/Error_handling Else see here: http://en.wikipedia.org/wiki/Assertion_(computing) > Thanks > John

[Help-glpk] GLPK wikibook Python page

2012-08-19 Thread Robbie Morrison
s IDE based on SciTE: http://en.wikibooks.org/wiki/GLPK/Windows_IDEs#Gusek best wishes, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (prefer

Re: [Help-glpk] [Fwd: No Memory Available Error]

2012-08-18 Thread Robbie Morrison
Hi Aly To: Robbie Morrison , glpk xypron Subject: Re: [Help-glpk] [Fwd: No Memory Available Error] Message-ID: <1277427526.10189461.1345293076901.javamail.r...@mail.gatech.edu> From: Aly Megahed

[Help-glpk] Elwes (2012) on the Hirsch conjecture and the simplex algorithm

2012-08-17 Thread Robbie Morrison
: http://arxiv.org/abs/1006.2814 Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred) : rob...@actrix.co.nz [from Webmail client

Re: [Help-glpk] Gusek - GLPK IDE for Windows - 0.2.13

2012-08-17 Thread Robbie Morrison
> GLPK standalone solver (glpsol.exe). > > Best Regards, > Luiz Bettoni I just updated the Gusek GLPK wikibook entry too: http://en.wikibooks.org/wiki/GLPK/Windows_IDEs#Windows_IDEs But you might like to add to that material. Maybe a couple more sentences? Hint! Robbie --- Robbi

Re: [Help-glpk] [Fwd: No Memory Available Error]

2012-08-15 Thread Robbie Morrison
u might also find something useful here, particularly if you are coding in C, Java, or similar: http://en.wikibooks.org/wiki/GLPK/Mixing_GLPK_with_other_solver_packages HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berl

Re: [Help-glpk] Installing glpk on Mac OS X 10.8

2012-08-09 Thread Robbie Morrison
ce usable. In my case, it would be better to give users an entire Linux distro and my program on a DVD, that then runs under virtualization on Windows machines. good luck, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berli

Re: [Help-glpk] Hi all

2012-08-07 Thread Robbie Morrison
t; for more detail about how > to use the callback function. > > Patrik Dufresne [snip] IIRC this question comes up from time-to-time. If someone wants to write some sample code and post it back to the list (or me), I will add it to the GLPK wikibook, probably here: http://en.wikibooks.

[Help-glpk] Gassmann (2012) : Optimization services : connecting algebraic modelling languages to several solvers using a web-aware framework

2012-08-06 Thread Robbie Morrison
the methods we used to overcome them. --- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineering (IET) Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred) : rob

Re: [Help-glpk] info command --wcpxlp

2012-08-02 Thread Robbie Morrison
interface here to GLPSOL if you are running lots of tests: http://en.wikibooks.org/wiki/GLPK/Using_GLPSOL#xglpsol_bash_script HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected)

Re: [Help-glpk] [Fwd: GLPK Implementation help]

2012-08-02 Thread Robbie Morrison
ce, Robbie To: Robbie Morrison Subject: Re: [Help-glpk] [Fwd: GLPK Implementation help] Message-ID: From: =?ISO-8859-1?Q?Jo=E3o_Guedes?= Date: Thu, 2 Aug 2012 15:25:27 +0100 > hi, > > sorry n

Re: [Help-glpk] [Fwd: GLPK Implementation help]

2012-08-01 Thread Robbie Morrison
In "Configuration Properties->VC++ Directories add > c:\Program Files\GLPK\glpk-4.47\src > Enter the following code: [snip] This information is now on the GLPK wikibook: http://en.wikibooks.org/wiki/GLPK/Windows_executables#Detailed_instructions But it needs checking by a Windo

Re: [Help-glpk] [Fwd: glpsol not converging]

2012-08-01 Thread Robbie Morrison
p://en.wikipedia.org/wiki/Scientific_notation#E_notation Also: $ hms 1e5 27:46:40 $ hms 1e6 277:46:40 Note 'hms' is a small but useful C++ utility I wrote to convert seconds to hh:mm:ss[.ss] format. cheers, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Techni

Re: [Help-glpk] GLPK Implementation help

2012-07-31 Thread Robbie Morrison
dio and Windows, you could also consider using the GNU GCC compiler and Linux. Ubuntu is convenient distro, if you have no preference for a particular Linux. I may be mistaken, but I think there is much less traffic on this list over linker errors and so forth stemming from Linux users. just a t

Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions]

2012-07-28 Thread Robbie Morrison
Hello Sergey To: Robbie Morrison Subject: Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions] Message-ID: From: Sergey Kuznetsov Date: Fri, 27 Jul 2012 17:36:47 +

Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions]

2012-07-26 Thread Robbie Morrison
Hello once again Sergey Forgot the crucial load call in my previous message: ... glp_load_matrix(lp, 9, &ia[0], &ja[0], &ar[0]); // above was: glp_load_matrix(lp, 9, ia, ja, ar) solver_ret = glp_simplex(lp, NULL); ... Robbie --- Robbie Morrison PhD student -- policy-ori

Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions]

2012-07-26 Thread Robbie Morrison
Hello again Sergey To: Robbie Morrison Subject: Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions] Message-ID: From: Sergey Kuznetsov Date: Fri, 27 Jul 2012 00:11:30 +0300

Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions]

2012-07-26 Thread Robbie Morrison
Hello again Sergey To: Robbie Morrison Subject: Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions] Message-ID: From: Sergey Kuznetsov Date: Thu, 26 Jul 2012 18:58:53 +

Re: [Help-glpk] Feasibility pump heuristic

2012-07-26 Thread Robbie Morrison
%80%93Tucker_conditions > Thanks for you'r help. > > Patrik Dufresne > -- next part -- > An HTML attachment was scrubbed... > URL: <http://lists.gnu.org/archive/html/help-glpk/attachments/20120726/ba56f1bc/attachment.html> HTH, Robbie --- Robbie Morrison

Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions]

2012-07-26 Thread Robbie Morrison
Hello Sergey Your two emails are both below. I deleted some material to shorten this message. Some comments interleaved too. To: Robbie Morrison Subject: Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find

Re: [Help-glpk] [Fwd: Problem with GLPK when trying to find value functions]

2012-07-26 Thread Robbie Morrison
your system, 'valgrind' is available via debian package 'valgrind' (or my system). One other thought: GLPK is not officially thread safe: do you call GLPK concurrently? HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical Univers

Re: [Help-glpk] Expressing min function according to a boolean

2012-07-19 Thread Robbie Morrison
+0100 (BST) > Is it possible to express the function min according to > a boolean variable [snip] Haven't got time to think about your question, sorry, but have you looked here: http://en.wikibooks.org/wiki/GLPK/Modeling_tips#Extremum_terms HTH, Robbie --

Re: [Help-glpk] problem with parameter

2012-07-17 Thread Robbie Morrison
0,600] 0.412226 > end; > > Just replace ... by the missing lines. > > Best regards > > Xypron --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirecte

Re: [Help-glpk] not retrieving integer solutions

2012-07-12 Thread Robbie Morrison
lease see: http://en.wikibooks.org/wiki/GLPK/Troubleshooting#Continuous_solution_to_mixed-integer_problem Could a be a bug in the C# wrapper or your use of the wrong calls? (Given C# supports polymorphism, could this wrapper not be written to proved the correct recovery using a generic interface?) Rob

Re: [Help-glpk] How did you rewrite the cplex API?

2012-07-09 Thread Robbie Morrison
hat said, I make sure everything I use is clean. Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred)

Re: [Help-glpk] Some problem with using glp_iptcp() in Java

2012-07-03 Thread Robbie Morrison
he API level. HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineering (IET) Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred) : rob...@actrix.co.nz

Re: [Help-glpk] glpsol, arbitrary precision and large numbers

2012-06-29 Thread Robbie Morrison
nly on api level and cannot be changed on using glpsol." You could build a custom GLPSOL with a different default compiled in. Not especially convenient, but it might prove a point. HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical Univer

Re: [Help-glpk] glpsol, arbitrary precision and large numbers

2012-06-29 Thread Robbie Morrison
Hello Edd To: Robbie Morrison Subject: Re: [Help-glpk] glpsol, arbitrary precision and large numbers Message-ID: <20120629175734.gq11...@edd-i386.kent.ac.uk> From: Edd Barrett Date: Fri, 29 Jun 2

Re: [Help-glpk] glpsol, arbitrary precision and large numbers

2012-06-29 Thread Robbie Morrison
ions * export your MathProg model in MPS format and try solving that with GLPSOL or with other solvers http://en.wikibooks.org/wiki/GLPK/Interoperability#MPS_free_format HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of

Re: [Help-glpk] Doxygen

2012-06-19 Thread Robbie Morrison
nd that 'cflow' can generate POSIX-compliant output: http://www.gnu.org/software/cflow/manual/html_node/Output-Formats.html I guess Xypron will put up the doxygen-generated HTML output on a website somewhere? Maybe on: http://www.gnu.org/software/glpk/ cheers, Robbie --- Robbie

Re: [Help-glpk] Doxygen

2012-06-17 Thread Robbie Morrison
y to make > necessary additions in the LaTeX files. If you mean the > source code, there exist some packages to automatically > format it and produce, say, html or pdf pages provided > with the index of all program objects and > hyperlinks. Howe

Re: [Help-glpk] glpk help

2012-06-07 Thread Robbie Morrison
ks.org/wiki/GLPK/Scripting_plus_MathProg#Suppressing_terminal_output_under_Python HTH, Robbie --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morri...@iet.tu-berlin.de Webmail (preferred) :

[Help-glpk] Re : Can I adjust the gap in glpsol when I use mathprog?

2012-06-07 Thread Robbie Morrison
minates the search. This allows obtaining suboptimal integer feasible solutions if solving the problem to optimality takes too long time. Note too that the gap is reported during runtime if suitably small: http://en.wikibooks.org/wiki/GLPK/Terminal_output#MIP_branch-and-cut_output You should only

[Help-glpk] MMIX cross-compilation / new wikibook entry

2012-06-05 Thread Robbie Morrison
To: Robbie Morrison Subject: Glpk wikibook Message-ID: <1338280442.3338.13.camel@corvax> From: Andrew Makhorin Date: Tue, 29 May 2012 12:34:02

Re: [Help-glpk] Suggestions for GLPK

2012-06-04 Thread Robbie Morrison
ons): http://www.boost.org/doc/libs/1_49_0/doc/html/string_algo.html http://www.boost.org/doc/libs/1_49_0/libs/regex/doc/html/index.html The first suggestion is programmatically cleaner. The second option would need to be updated whenever GLPK modifies its terminal reporting. HTH, Rob

Re: [Help-glpk] Generate data section files for model (in GNU MathProg or other languages)

2012-05-09 Thread Robbie Morrison
Hello again Tony To: Robbie Morrison Subject: Re: [Help-glpk] Generate data section files for model (in GNU Message-ID: From: Tony Khosravi Date: Wed, 9 May 2012 22:29:12 +0200

Re: [Help-glpk] Generate data section files for model (in GNU MathProg or other languages)

2012-05-09 Thread Robbie Morrison
Hello Tony To: Robbie Morrison Subject: Re: [Help-glpk] Generate data section files for model (in GNU Message-ID: From: Tony Khosravi Date: Wed, 9 May 2012 20:06:11 +0200

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