[Ipopt] Using HSL 2013 with pyipopt python module?

[Guy Charles]

Tony,

Thanks for the quick response and pointer to the cause of my error.

I was running with the older ipopt 3.9.2 dll from the download site, which also had this error - I'll try some different ones just to be sure, although I think that 3.9.2 was the minimum version for pyipopt.  I have only used the binary download dlls so far, so not sure if pyipopt requires VS or MinGW built dll.

I guess the ideal is building my own dlls locally, so I have been trying to get a dll build from the source code myself under MinGW but not quite got there (was about to post another question to the list to ask about that one!).

Unfortunately I don't have access to dropbox from work, so I've not tried your builds.  I do have libgcc, libgfortran etc from MinGW installation if that is OK to run your opensuse builds?


cheers,
Guy



From: Tony Kelman [mailto:kelman at berkeley.edu]
Sent: 01 September 2014 18:34
To: Guy Charles; ipopt at list.coin-or.org
Subject: Re: [Ipopt] Using HSL 2013 with pyipopt python module?

Guy,

It’s probably an Ipopt compilation issue with the binaries you downloaded. The error “Do not know how to handle shared libraries on this operating system” comes from this line https://projects.coin-or.org/Ipopt/browser/releases/3.11.0/Ipopt/src/contrib/LinearSolverLoader/LibraryHandler.c#L34 because the define ERROR_LOADLIB was set here - https://projects.coin-or.org/Ipopt/browser/releases/3.11.0/Ipopt/src/contrib/LinearSolverLoader/LibraryHandler.h#L29

Apparently neither of HAVE_WINDOWS_H and HAVE_DLFCN_H were defined when the Ipopt library you’re using was compiled. You’ll need a different one. There are some older downloads at http://www.coin-or.org/download/binary/ and I have some MinGW DLL’s I made last year that may work for you, try https://dl.dropboxusercontent.com/u/8244638/bonmin_win32.zip or https://dl.dropboxusercontent.com/u/8244638/bonmin_win64.zip (includes Ipopt, Cbc, and Bonmin). I haven’t tested these with Python. Do you (or anybody else on the list) know whether pyipopt requires a Visual Studio-compiled Ipopt DLL, or if it can also work with a MinGW DLL?

I also just built a set of cross-compiled binaries on the opensuse build service, I can give you links to those but they’re done as separate packages for ASL, Lapack, Mumps, Ipopt, and you need to get libgcc, libgfortran etc. There’s a package in Julia that automates this, which you might be interested in trying out.

-Tony



______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please visit http://www.symanteccloud.com
______________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.coin-or.org/pipermail/ipopt/attachments/20140902/ec066071/attachment-0001.html>