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| From: | Erwin Pritanto |
| Subject: | [Help-glpk] NO PRIMAL FEASIBLE SOLUTION |
| Date: | Mon, 9 Oct 2006 15:01:41 +0700 |
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I develop a movement model which will distribute grain optimally from surplus regions to deficit regions. Some regions will receive in large amounts while others in small amounts. The distribution depends on the harvest periods, stock levels in senders & receivers, demand and the availability & cost of transporters. When I ran the model with glpk, I got comments that the model has no feasible solution: sw: glpsol --model
move-4.mod Reading model section from
move-4.mod... Reading data section from
move-4.mod... move-4.mod:188: warning: final NL missing before end of
file 188 lines were read Generating TotalCost... Generating
BalanceInPeriod_1... Generating
BalanceInPeriod_t... Generating ShipLimit... Generating ShortLimit... Generating NoMove... Model has been successfully
generated lpx_simplex: original LP has 9049 rows, 8736 columns,
34208 non-zeros PROBLEM HAS NO PRIMAL FEASIBLE
SOLUTION lpx_integer: optimal solution of LP relaxation
required Time used:
0.0 secs Memory used: 11.1M (11652795
bytes) sw: Have somebody suggestions for me? I suspect that mixing the large and small amounts distribution (small and large values in the matrix) may cause the infeasibility. Thank you very much Erwin |
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