Hello all,
I’m writing to you to see if you can give some help about this problem. I’m solving a MCP model with PATH, wich takes too long to solve unless I set the right options. However, for some reason I am not being able to do that properly.
After two restarts the problem solves very fast, and the options reported by path are:
Restart Log
proximal_perturbation 0
crash_method none
crash_perturb no
nms_initial_reference_factor 10
nms_memory_size 2
nms_mstep_frequency 1
lemke_search_type slack
I generated an opt file:
(gms listing)
$onecho > path.opt
proximal_perturbation=0
crash_method=none
crash_perturb=0
nms_initial_reference_factor=10
nms_memory_size=2
nms_mstep_frequency=1
lemke_start_type=slack
$offecho
However, it doesn’t accelerate the solution, and it stills takes two restarts, even though it seems to be read ok:
(log listing)
Reading parameter(s) from “D:\nn\path.opt”
proximal_perturbation=0
crash_method=none
crash_perturb=0
nms_initial_reference_factor=10
nms_memory_size=2
nms_mstep_frequency=1
lemke_start_type=slack
I’m guessing two possible issues, and I’ll be grateful if you can help me:
- There is an error in the opt file I am creating
- Or, perhaps, on a restart PATH doesn’t return to the original starting point, and continues from the variable values found in the last try.
Thanks,
Regards
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