[Help-glpk] Out-of-memory status

[esma mehiaoui]

Hello everybody,

When i run my MILP i obtain the following result:

Elapsed real time = 891.56 sec. (tree size = 1234.59 MB, solutions = 9)
Nodefile size = 1102.85 MB (263.07 MB after compression)
 110609 99117     7647.8916   121       18.5800    53997.8130  2467876     ---
 116645 104792    14681.8335   180       18.5800    53812.5209  2591316     ---

 123130 110853     3127.3544    90       18.5800    53802.9625  2713593     ---
 126740 114228    15813.0130   208       18.5800    53617.7849  2787968     ---
 132634 119754    35629.3506   278       18.5800    53363.7674  2917738     ---
 135674 122612    23689.6227   261       18.5800    53361.8421  2972618     ---
 140622 127264    15009.8026   206       18.5800    53359.8839  3054655     ---

There may be further error information in the clone logs.

Clique cuts applied:  5
Implied bound cuts applied:  261
Mixed integer rounding cuts applied:  294
Zero-half cuts applied:  157

Root node processing (before b&c):
  Real time             =   40.81
Parallel b&c, 24 threads:
  Real time             = 1085.91
  Sync time (average)   =    0.18
  Wait time (average)   =    0.00
                          -------
Total (root+branch&cut) = 1126.72 sec.
Warning: MIP starts not constructed because of out-of-memory status.

Consider using CPLEX node files to reduce memory usage.
CPLEX Error  1001: Out of memory.

Solution pool: 9 solutions saved.

MIP - Error termination, integer feasible:  Objective =  1.8579993238e+01
Current MIP best bound =  5.3358237390e+04 (gap = 53339.7, 2.9e+05%)
Solution time = 1133.38 sec.  Iterations = 3080215  Nodes = 142226 (122990)
Deterministic time = 154037.97 ticks  (135.91 ticks/sec)


Could someone explain me this results ? Also, as 9 solutions are saved, is it possible to obtain the best one ?

Thank you
Esma