> 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)
There is something totally wrong. The fragment that displays two
last messages is the following:
/* display statistics */
print("Time used: %.1f secs", xdifftime(xtime(), start));
{ glp_ulong tpeak;
char buf[50];
lib_mem_usage(NULL, NULL, NULL, &tpeak);
print("Memory used: %.1f Mb (%s bytes)",
(4294967296.0 * tpeak.hi + tpeak.lo) / 1048576.0,
ultoa(tpeak, buf, 10));
}
Ultoa always returns a string pointer; it cannot return NULL.
Why not to try testing cross-compilation on a simple C program?
> 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?
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