Re: [Help-glpk] Error message with glpsol on PowerPC

[orlan]

> To check the package on the target platform try './glpsol --mps plan.mps'.

Hi Andrew,
  Thanx for the assistance.  Unfortunately, the results from the source and 
target platforms differed significantly.  Here is the result from my linux 
PowerPC 440EPx target:

lpx_read_mps: reading problem data from `plan.mps'...
lpx_read_mps: problem PLAN
lpx_read_mps: 8 rows, 7 columns, 48 non-zeros
lpx_read_mps: 54 cards were read
glp_simplex: original LP has 8 rows, 7 columns, 48 non-zeros
PROBLEM HAS NO PRIMAL FEASIBLE SOLUTION
Time used:   0.0 secs
Memory used: 0.0 Mb ((null) bytes)

  I repeated the same on the Windows/Cygwin source PC:

lpx_read_mps: reading problem data from `plan.mps'...
lpx_read_mps: problem PLAN
lpx_read_mps: 8 rows, 7 columns, 48 non-zeros
lpx_read_mps: 54 cards were read
glp_simplex: original LP has 8 rows, 7 columns, 48 non-zeros
glp_simplex: presolved LP has 7 rows, 7 columns, 41 non-zeros
lpx_adv_basis: size of triangular part = 7
      0:   objval =   6.500000000e+02   infeas =   1.000000000e+00 (0)
      2:   objval =   4.376770833e+02   infeas =   0.000000000e+00 (0)
*     2:   objval =   4.376770833e+02   infeas =   0.000000000e+00 (0)
*     8:   objval =   2.962166065e+02   infeas =   0.000000000e+00 (0)
OPTIMAL SOLUTION FOUND
Time used:   0.0 secs
Memory used: 0.1 Mb (54416 bytes)

  The point of departure between the two appears to be during/immediately after 
the presolve step.  Hopefully one of them is correct, presumably the PC!  Not 
sure if this provides enough information on what to try next?

Seasons greetings,
Orlan Franks