November 2008 - Neos-comments - mailman3.cels.anl.gov

[NEOS Support Req #70] NEOS server
by Sean Stallwood 28 Nov '08

28 Nov '08

Hi, I've been trying to send a LP format file using the NEOS Server for QSopt_Ex. But when I click submit it eventually comes up with the following error: *** You chose the QSopt_EX solver *** Host: thales, Current process id: 20623 Reading problem from sample.lp sample.lp 22: End LP Error at "End": "End" is not a column name. Could not read lp file. I've checked the format of my file using the online java applet. This applet tells me my LP format is correct and will solve the problem for me within the applet, so I'm not quite sure what is going wrong. The end of my file is as follows: Bounds x1 <= 750000 End The job number for this problem was: Job #1754179 Thanks Sean

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[NEOS Support Req #69] Re: Simplex Method Comment
by Sven Leyffer 27 Nov '08

27 Nov '08

Hi, Just write the complex LP in cartesian coordinates, i.e. z = x + i*y, where i = sqrt(-1), x,y \in R, z \in C, and then solve it. As long as your objective is real- valued this will work (otherwise you need to make up your mind whether the real or the imaginary part is more important ;-) Happy Thanksgiving, Sven On Wed, 26 Nov 2008, shalunain(a)gmail.com wrote: > Comment from the Simplex Method Educational Tool Pages. > > Name: shalunain > Email: shalunain(a)gmail.com > > Remote Host: > Http From: > > solve somecomplex problems also > >

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[NEOS Support Req #68] Simplex Method Comment
by shalunain＠gmail.com 26 Nov '08

26 Nov '08

Comment from the Simplex Method Educational Tool Pages. Name: shalunain Email: shalunain(a)gmail.com Remote Host: Http From: solve somecomplex problems also

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[NEOS Support Req #67] Simplex Method Comment
by shalunain＠gmail.com 26 Nov '08

26 Nov '08

Comment from the Simplex Method Educational Tool Pages. Name: shalunain Email: shalunain(a)gmail.com Remote Host: Http From: solve somecomplex problems also

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[NEOS Support Req #66] column name?
by wangying 26 Nov '08

26 Nov '08

Hi, Can I use Modek solver in opf file? Beside that, what is that column name required or LP Input of qsopt_ex for mixed integer linear programming? Thanks, yw _________________________________________________________________ MSN ��ʱ��Ѷ��ۼ��Ż�� http://cn.msn.com

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[NEOS Support Req #65] Re: NEOS Results for Job #1751310
by Brad Bell 24 Nov '08

24 Nov '08

Attached you will find a copy of the input file that I sent for Job #1751310. This file used to work, for example, see Job #1672880. I do not understand the error message below. How do you suggest I proceed to understand what the problem is ? On Mon, 24 Nov 2008, neos(a)mcs.anl.gov wrote: > You are using the solver clp-mps. > > \%%%%%%%%%%%%%%%%%%%% CLP Results %%%%%%%%%%%%%%%%%%%% > > Load Avg: ( 0.0 , 0.0 , 0.0 ) > Coin LP version 1.03.03, build Aug 18 2006 > command line - /home/neos/neos-bin/clp clp.mps - > At line 4 NAME eq_2.1 > At line 5 ROWS > At line 10 COLUMNS > At line 19 RHS > At line 24 bound > Bad image at line 24 < bound > > Returning as too many errors > There were 1000 errors when importing model from ./clp.mps > There were 1000 errors on input > Switching to line mode > Clp:Clp:Clp:** Current model not valid > Clp:Clp:** Current model not valid > Clp: > > %%%%%%%%%%%%%%%%%%%% CLP Results %%%%%%%%%%%%%%%%%%%% >

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[NEOS Support Req #64] Re: Help Error in Neos!
by Jason Sarich 24 Nov '08

24 Nov '08

Johan, NEOS has some troubles with non-ascii characters in text files. It should help if you can remove these characters. Jason Sarich On Sun, 23 Nov 2008, johan Garzon Ramirez wrote: > > Hello,my name is Johan and Im from Colombia, Ive been using neos lately > and it has worked wonderfully, but today I recieved an error from the > web page trying to solve my last model saying the following: (I would be > really gratefull if someone could tell me what to do or why is this > happening.) > > thats the link of the error > http://neos.mcs.anl.gov/neos/cgi-bin/nph-neos-solver.cgi > > A problem occurred in a Python script. Here is the sequence of function > calls leading up to the error, in the order they occurred. > > > > > /www/www-neos/linktree/neos/cgi-bin/nph-neos-solver.cgi in () > > 8 import NEOS.CGIPrinter > > 9 cgipage = NEOS.CGIPrinter.CGIPrinter() > > 10 cgipage.printPage() > > 11 > > 12 > > cgipage = <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>, cgipage.printPage = <bound method CGIPrinter.printPage of <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>> > > > > /nfs/mcs-homes64/neos/neos/NEOS/CGIPrinter.py in printPage(self=<NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>) > > 72 self.solverdoc = NeosXML.SolverParser(self.neos.getXML(self.category,self.solver,self.inputMethod)) > > 73 > > 74 self.createJobIn() > > 75 > > 76 > > self = <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>, self.createJobIn = <bound method CGIPrinter.createJobIn of <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>> > > > > /nfs/mcs-homes64/neos/neos/NEOS/CGIPrinter.py in createJobIn(self=<NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>) > > 233 self.jobIn +="<%s><![CDATA[%s]]></%s>\n\n" %\ > > 234 (self.solverdoc.items[i].getToken(), > > 235 value,self.solverdoc.items[i].getToken()) > > 236 > > 237 else: > > value = 'sets\r\n\r\ni tipo de alimento /a1*a17/\r\nj tipo de n...on using lp minimizing z;\r\ndisplay x.l,x.m;\r\n\r\n\r\n', self = <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>, self.solverdoc = <NEOS.NeosXML.SolverParser instance at 0x83b104c>, self.solverdoc.items = [<NEOS.NeosXML.Item instance at 0x83cdecc>, <NEOS.NeosXML.Item instance at 0x83cdf4c>, <NEOS.NeosXML.Item instance at 0x83cdf6c>, <NEOS.NeosXML.Item instance at 0x83cdf8c>], i = 0, ].getToken undefined > <type 'exceptions.UnicodeDecodeError'>: 'ascii' codec can't decode byte 0xf3 in position 2564: ordinal not in range(128) args = ('ascii', 'sets\r\n\r\ni tipo de alimento /a1*a17/\r\nj tipo de n...on using lp minimizing z;\r\ndisplay x.l,x.m;\r\n\r\n\r\n', 2564, 2565, 'ordinal not in range(128)') encoding = 'ascii' end = 2565 message = '' object = 'sets\r\n\r\ni tipo de alimento /a1*a17/\r\nj tipo de n...on using lp minimizing z;\r\ndisplay x.l,x.m;\r\n\r\n\r\n' reason = 'ordinal not in range(128)' start = 2564 > _________________________________________________________________ > Stay up to date on your PC, the Web, and your mobile phone with Windows Live > http://clk.atdmt.com/MRT/go/119462413/direct/01/

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[NEOS Support Req #63] Re: Neos Server does not find the ***.dat file
by Sven Leyffer 24 Nov '08

24 Nov '08

Hola Ernesto, Can you send us your error messages? I suspect that you are using expliocit filenames in your .mod or the command file. You do not need to include a data stub.mod statement in your stub.mod file. We rename the files that are submitted, so you cannot use explicit filenames; the server wil load data and model file for you. Kind regards, Sven On Mon, 24 Nov 2008, Ernesto Staffetti wrote: > Dear Sirs, > > we are trying to use the NEOS SERVER with Minos, Ipopt, with AMPL. > We use two files (a ***.mod and a ***.dat file). > > After uploading both we get an error. > The server does not find the ***.dat file. > > Could you please help us in solving the problem? > > Thanks in advance and regards, > > > Ernesto Staffetti > > Universidad Rey Juan Carlos > Departamento de Estadï¿½stica e Investigaciï¿½n Operativa > Departamental 2 Building, Office 046 > C/ Tulipï¿½n s/n > 28933 Mï¿½stoles Madrid Spain > Tel: +34 916647475, +34 914888478 > Email: ernesto.staffetti(a)urjc.es > >

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[NEOS Support Req #62] Neos Server does not find the ***.dat file
by Ernesto Staffetti 24 Nov '08

24 Nov '08

Dear Sirs, we are trying to use the NEOS SERVER with Minos, Ipopt, with AMPL. We use two files (a ***.mod and a ***.dat file). After uploading both we get an error. The server does not find the ***.dat file. Could you please help us in solving the problem? Thanks in advance and regards, Ernesto Staffetti Universidad Rey Juan Carlos Departamento de Estadística e Investigación Operativa Departamental 2 Building, Office 046 C/ Tulipán s/n 28933 Móstoles Madrid Spain Tel: +34 916647475, +34 914888478 Email: ernesto.staffetti(a)urjc.es

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[NEOS Support Req #61] Help Error in Neos!
by johan Garzon Ramirez 22 Nov '08

22 Nov '08

Hello,my name is Johan and Im from Colombia, Ive been using neos lately and it has worked wonderfully, but today I recieved an error from the web page trying to solve my last model saying the following: (I would be really gratefull if someone could tell me what to do or why is this happening.) thats the link of the error http://neos.mcs.anl.gov/neos/cgi-bin/nph-neos-solver.cgi A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred. /www/www-neos/linktree/neos/cgi-bin/nph-neos-solver.cgi in () 8 import NEOS.CGIPrinter 9 cgipage = NEOS.CGIPrinter.CGIPrinter() 10 cgipage.printPage() 11 12 cgipage = <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>, cgipage.printPage = <bound method CGIPrinter.printPage of <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>> /nfs/mcs-homes64/neos/neos/NEOS/CGIPrinter.py in printPage(self=<NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>) 72 self.solverdoc = NeosXML.SolverParser(self.neos.getXML(self.category,self.solver,self.inputMethod)) 73 74 self.createJobIn() 75 76 self = <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>, self.createJobIn = <bound method CGIPrinter.createJobIn of <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>> /nfs/mcs-homes64/neos/neos/NEOS/CGIPrinter.py in createJobIn(self=<NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>) 233 self.jobIn +="<%s><![CDATA[%s]]></%s>\n\n" %\ 234 (self.solverdoc.items[i].getToken(), 235 value,self.solverdoc.items[i].getToken()) 236 237 else: value = 'sets\r\n\r\ni tipo de alimento /a1*a17/\r\nj tipo de n...on using lp minimizing z;\r\ndisplay x.l,x.m;\r\n\r\n\r\n', self = <NEOS.CGIPrinter.CGIPrinter instance at 0x830730c>, self.solverdoc = <NEOS.NeosXML.SolverParser instance at 0x83b104c>, self.solverdoc.items = [<NEOS.NeosXML.Item instance at 0x83cdecc>, <NEOS.NeosXML.Item instance at 0x83cdf4c>, <NEOS.NeosXML.Item instance at 0x83cdf6c>, <NEOS.NeosXML.Item instance at 0x83cdf8c>], i = 0, ].getToken undefined <type 'exceptions.UnicodeDecodeError'>: 'ascii' codec can't decode byte 0xf3 in position 2564: ordinal not in range(128) args = ('ascii', 'sets\r\n\r\ni tipo de alimento /a1*a17/\r\nj tipo de n...on using lp minimizing z;\r\ndisplay x.l,x.m;\r\n\r\n\r\n', 2564, 2565, 'ordinal not in range(128)') encoding = 'ascii' end = 2565 message = '' object = 'sets\r\n\r\ni tipo de alimento /a1*a17/\r\nj tipo de n...on using lp minimizing z;\r\ndisplay x.l,x.m;\r\n\r\n\r\n' reason = 'ordinal not in range(128)' start = 2564 _________________________________________________________________ Stay up to date on your PC, the Web, and your mobile phone with Windows Live http://clk.atdmt.com/MRT/go/119462413/direct/01/

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