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GLOBALLib Changelog
===================

2/9/15:
-------

For the model flowchan of the GAMS model library, a bug in the
specification of boundary conditions has been discovered and fixed in
the model library of GAMS version 24.4.
Essentially, this leads to a change in the right-hand-side of one
constraint (from 0 to 1).

Accordingly, we added fixed variants of the flowchan instances to
GlobalLib:
   flowchan50fix.gms
   flowchan100fix.gms
   flowchan200fix.gms
   flowchan400fix.gms

The previous instances are still available (under their original name).

2/19/13:
--------
A number of duplicates has been identified:
   ex9_2_1  is the same as ex9_2_7
   ex9_1_10 is the same as ex9_1_8
   ex8_1_8  is the same as st_e20
   gangesx  is the same as ganges
   gancnsx  is the same as gancns
   himmel11 is the same as st_e28
   pinene25 is the same as pinene50
   prob05   is the same as st_e08
   st_bpk2  is the same as st_bpk1
   st_e10   is the same as ex4_1_8
   st_e20   is the same as ex7_2_2
   st_e39   is the same as ex8_1_6
   st_fp1   is the same as ex2_1_1
   st_fp2   is the same as ex2_1_2
   st_fp3   is the same as ex2_1_3
   st_fp4   is the same as ex2_1_4
   st_fp5   is the same as ex2_1_5
   st_fp6   is the same as ex2_1_6
   st_jcbpafex is the same as st_e23
   st_kr    is the same as st_phex
   st_pan2  is the same as ex2_1_1
For each pair, the first instance has been removed from the
library.


4/20/04:
---------
Converted optimization direction from max to min for the models 
listed below. Note that the objective sign will differ for these
models from the previous. 

All models in GLOBALLib are now minimization problems.

arki0003.gms  
arki0007.gms  
arki0009.gms  
arki0010.gms  
arki0011.gms  
arki0012.gms  
arki0013.gms  
arki0014.gms  
arki0015.gms  
arki0019.gms  
arki0020.gms  
arki0021.gms  
arki0022.gms  
arki0023.gms  
arki0024.gms  
btest14.gms  
glider100.gms  
glider200.gms  
glider400.gms  
infeas1.gms  
maxmin.gms  
polygon75.gms  


12/11/03:
---------
Added new GAMS Software GmbH client model

gsg_0001.gms

GAMS Software GmbH family of models will be prefixed by gsg_.


09/03/02:
---------
Added new group of GAMS Models. Model names have prefix 

st_(model).gms


08/23/02:
---------
Added new group of GAMS Dev. Client models. Fixed minor bugs in some 
model pages.


07/31/01:
---------
Beta version of the GLOBALLib published on hidden web pages with 256
models. Library consists of the model from Floudas et. al. Handbook of
Test Problems and models from the GAMS Model Library.


07/16/01:
---------

Alpha version of the GLOBALLib published on hidden web pages with 109
models.



MAINTENANCE INFORMATION FOR WEBMASTER
=====================================

Adding New Models To GLOBALLib:
-------------------------------

The following needs to be updated in globallib.gms:

1. Update set s sequence number to reflect additional number of models

2. Add models to the set m models with their URL source

3. Update set ms(m,s) model sequence mapping to include new models

4. If necessary, update set ds(d,s) model application mapping

5. Add reference mapping from globallib.gms internal to gams.bib external
   reference map. This should look something like:

       $echo r166  37 >> g2g.txt

   where r166 is the globallib.gms internal reference number and 37
   is the gams.bib reference number.

   REMARK: The files gams.bib and bib2gms.exe need to be in the same
           directory as all globallib.gms files. When globallib.gms
           is run, the reference file globalref.inc is automatically
           updated to include the new references.

6. Update model reference mapping set mr(m,r)
 
7. If solution points exist, update set mp(m,p) available restart or 
   solution points, as well as set bk(m,p) point with best known solution.

Once this is completed, proceed with the following:

1. Add new models and solution points to globallib.zip

2. Freshen globallib.zip:  >> gmszip -f globallib.zip

3. Run globalstat.gms:     >> gams globalstat.gms

4. Run globalhtm.gms:      >> gams globalhtm.gms