[Help-glpk] Basis read/write

[prem swaroop]

Team

There #39;s a couple of features documented in 4.34 in the stand-alone solver 
section (Appendix D):

(Options specific to simplex method)

--bas filename read initial basis from filename in MPS format

--wbas filename write nal basis to filename in MPS format

Both are missing from the glpsol that I built on cygwin/Windows Vista, for 
versions 4.34 as well as 4.39.

Now, documentation for 4.39 does NOT mention these features - so that #39;s at 
least consistent.

I suspect this feature existed earlier on.  I think this could be a useful 
feature to keep, and I can quote my case here.

I am essentially solving a large-ish LP whose parameters are generated by 
incrementing one parameter value.  And so, I dont expect too many changes in 
the solution for a large part of my increments, and hence using a final basis 
for one solution as an initial basis for the next could save a lot in time.

Regards
Prem
Team

There's a couple of features documented in 4.34 in the stand-alone solver section (Appendix D):

(Options specific to simplex method)

--bas filename read initial basis from filename in MPS format

--wbas filename write nal basis to filename in MPS format

Both are missing from the glpsol that I built on cygwin/Windows Vista, for versions 4.34 as well as 4.39.

Now, documentation for 4.39 does NOT mention these features - so that's at least consistent.

I suspect this feature existed earlier on.  I think this could be a useful feature to keep, and I can quote my case here.

I am essentially solving a large-ish LP whose parameters are generated by incrementing one parameter value.  And so, I dont expect too many changes in the solution for a large part of my increments, and hence using a final basis for one solution as an initial basis for the next could save a lot in time.

Regards
Prem