GAMS Gurobi solver issue on linux

Archiver · March 27, 2013, 11:53pm

I’m having trouble running version gams24.0_linux_x64_64_sfx of GAMS with the gurobi solver.

GAMS begins running then fails with the following when the solver is invoked:

— Executing GUROBI: elapsed 0:00:05.537
*** gevCallSolver: Solve failed (GUROBI,MIP,sl=5)
*** gevCallSolver: rc=1 msg=libgurobi.so: cannot open shared object file: No such file or directory (problem occurred when trying to load libgrbcclib64.so)
*** Failure calling solver: GUROBI (rc=1)

I’ve added the GAMS directory to the PATH and LD_LIBRARY_PATH environment variables without luck. I don’t know why the solver is unable to find the shared library.

I’m running on Ubuntu 12.04 64 bit.

Any ideas?

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Archiver · March 28, 2013, 10:42am

Earl,

I justed tested GAMS/Gurobi on such a machine:

Welcome to Ubuntu 12.04.2 LTS (GNU/Linux 3.2.0-39-generic x86_64)

I do not have any problems running Gurobi. Also, there should be no reason to set LD_LIBRARY_PATH if you are running regularly the gams executable. Please verify that your installation is not corrupted. In particular check that the following files are there and have good permissions

$ ll libguro*
lrwxrwxrwx 1 distrib distrib 18 Mar 28 05:35 libgurobi.so → libgurobi.so.5.1.0
-rwxr-xr-x 1 distrib distrib 8243549 Jan 16 14:06 libgurobi.so.5.1.0

Also see if there are any issue with resolving Gurobi’s dependencies:

$ ldd libgurobi.so.5.1.0
linux-vdso.so.1 => (0x00007fffa8392000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fcfd47e1000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fcfd45c4000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fcfd4204000)
/lib64/ld-linux-x86-64.so.2 (0x00007fcfd548b000)

Hope this helps,
Michael Bussieck - GAMSWorld Coordinator

On Wednesday, March 27, 2013 6:53:15 PM UTC-4, C. Earl Maresh wrote:

I’m having trouble running version gams24.0_linux_x64_64_sfx of GAMS with the gurobi solver.

GAMS begins running then fails with the following when the solver is invoked:

— Executing GUROBI: elapsed 0:00:05.537
*** gevCallSolver: Solve failed (GUROBI,MIP,sl=5)
*** gevCallSolver: rc=1 msg=libgurobi.so: cannot open shared object file: No such file or directory (problem occurred when trying to load libgrbcclib64.so)
*** Failure calling solver: GUROBI (rc=1)

I’ve added the GAMS directory to the PATH and LD_LIBRARY_PATH environment variables without luck. I don’t know why the solver is unable to find the shared library.

I’m running on Ubuntu 12.04 64 bit.

Any ideas?

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Archiver · March 28, 2013, 3:27pm

Michael,

It was a corrupted installation as I was missing the sym links. The problem was I used the built-in Ubuntu unarchiver to extract the files rather than executing the binary directly. After re-running the installation the solver worked as expected.

Thanks for reply!

On Thursday, March 28, 2013 4:42:36 AM UTC-5, Michael Bussieck wrote: