GAMS — The Solver Manuals - Available Software

COIN-OR 75
usercutfreq (integer)
Determines the frequency of the cut generator model calls.
(default = 10)
usercutinterval (integer)
Determines the interval when to apply the multiplier for the frequency of the cut generator model calls. See
userheurinterval for details.
(default = 100)
usercutmult (integer)
Determines the multiplier for the frequency of the cut generator model calls.
(default = 2)
usercutnewint (integer)
Calls the cut generator if the solver found a new integer feasible solution.
(default = 1)
0 . Do not call cut generator because a new integer feasible solution is found.
1 . Let CBC call the cut generator if a new integer feasible solution is found.
usergdxin (string)
The name of the GDX file read back into CBC.
(default = bchin.gdx)
usergdxname (string)
The name of the GDX file exported from the solver with the solution at the node.
(default = bchout.gdx)
usergdxnameinc (string)
The name of the GDX file exported from the solver with the incumbent solution.
(default = bchout_i.gdx)
usergdxprefix (string)
Prefixes to use for usergdxin, usergdxname, and usergdxnameinc.
userheurcall (string)
The GAMS command line (minus the gams executable name) to call the heuristic.
userheurfirst (integer)
Calls the heuristic for the first n nodes.
(default = 10)
userheurfreq (integer)
Determines the frequency of the heuristic model calls.
(default = 10)
userheurinterval (integer)
Determines the interval when to apply the multiplier for the frequency of the heuristic model calls. For
example, for the first 100 (userheurinterval) nodes, the solver call every 10th (userheurfreq) node the heuristic.
After 100 nodes, the frequency gets multiplied by 10 (userheurmult), so that for the next 100 node the
solver calls the heuristic every 20th node. For nodes 200-300, the heuristic get called every 40th node, for
nodes 300-400 every 80th node and after node 400 every 100th node.
(default = 100)