AMPL
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I tried running an ampl example, specifically cut3.run from here: http://www.ampl.com/NEW/LOOP2/index.html
But you need to replace the command "option solver cplex" with "option solver cplexamp"
Put cplex in my path:
[chekh@corn14.stanford.edu] /mnt/glusterfs/chekh/ampl_test [0] $ module load CPLEX_Studio-12.4 [chekh@corn14.stanford.edu] /mnt/glusterfs/chekh/ampl_test [0] $ which cplex /mnt/glusterfs/software/non-free/CPLEX_Studio124/cplex/bin/x86-64_sles10_4.1/cplex [chekh@corn14.stanford.edu] /mnt/glusterfs/chekh/ampl_test [0] $ which cplexamp /mnt/glusterfs/software/non-free/CPLEX_Studio124/cplex/bin/x86-64_sles10_4.1/cplexamp
Interactive
Run interactive /usr/sweet/bin/ampl using the absolute path:
[chekh@corn14.stanford.edu] /mnt/glusterfs/chekh/ampl_test [0] $ /usr/sweet/bin/ampl ILOG AMPL 11.210, licensed to "stanford-palo alto, ca", options: MaintenanceEnd=20110531 AMPL Version 20081120 (Linux 2.6.18-5-amd64) ampl: include cut3.run 52.10 -2.00e-01 1 0 0 0 1 50.50 -2.00e-01 1 2 0 0 0 47.00 -1.00e-01 3 0 1 0 0 46.25 -1.00e-06 Rounded up to integer: 48 rolls Cut 0 0 9 5 0 8 18 8 20 5 0 0 0 0 1 1 3 45 0 2 0 0 0 0 2 0 50 0 0 2 0 0 0 0 1 55 0 0 0 2 0 0 0 0 75 0 0 0 0 1 1 0 0 WASTE = 7.48% Best integer: 47 rolls Cut 0 0 8 5 0 8 18 8 20 5 0 0 0 0 1 1 3 45 0 2 0 0 0 0 2 0 50 0 0 2 0 0 0 0 1 55 0 0 0 2 0 0 0 0 75 0 0 0 0 1 1 0 0 WASTE = 5.51% ampl: quit;
If you use "option solver cplex" in your run file, it will just sit there indefinitely and produce no output. If you use 'ampl' instead of '/usr/sweet/bin/ampl', you need to have /usr/sweet/bin in your PATH first.
non-interactive, aka batch
You can just give ampl the filename of the run file as an argument, instead of invoking ampl interactively. E.g.
/usr/sweet/bin/ampl cut3.run
It will still print the output out to stdout, so you may want to redirect to a file, e.g.
/usr/sweet/bin/ample cut3.run > output_of_cut3.out
submit to barley
Since we can run the program non-interactively, we can submit it to the resource management system. Write a job script like this:
#!/bin/bash # use the current directory #$ -cwd # use the current environment #$ -V # mail this address #$ -M chekh@stanford.edu # send mail on begin, end, suspend #$ -m bes # request 5GB of RAM for this job #$ -l mem_free=5G /usr/sweet/bin/ampl model.run
You'll need to use the '-V' flag either on the command line or in the job script, and you'll need to run 'module load CPLEX_Studio-12.4' before you submit the job. The latter will add cplex and cplexamp to your PATH and the former will pass that environment variable through to the job environment.