IPOPT 内存不足

Question

解决 MINLP 问题（GAMS 24.4.1/SCIP 版本 3.1 (020d055)）后出现以下错误：

Checking feasibility of solution #00 with reported objective value -1.000000970918791e-09.
This is Ipopt version 3.11, running with linear solver ma27.


EXIT: Not enough memory.
[../../../ThirdParty/SCIP/scip/src/nlpi/nlpi_ipopt.cpp:1104] ERROR: Ipopt returned with status "Insufficient Memory"
[../../../ThirdParty/SCIP/scip/src/nlpi/nlpi.c:503] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/nlp.c:4689] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/nlp.c:5527] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/scip.c:26453] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/heur_subnlp.c:1199] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/heur_subnlp.c:1820] ERROR: Error <-1> in function call
[reader_gmo.c:2074] ERROR: Error <-1> in function call
[reader_gmo.c:2371] ERROR: Error <-1> in function call
[reader_gmo.c:2768] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/dialog.c:828] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/dialog.c:370] ERROR: Error <-1> in function call
[../../../ThirdParty/SCIP/scip/src/scip/scip.c:8419] ERROR: Error <-1> in function call
--- Restarting execution

发生这种情况后，我无法检索解决方案。有没有办法避免这种情况？如果需要，我可以上传 GAMS 文件。

谢谢。

Answer 1

您可以设置选项 gams/resolvenlp = FALSE 以避免在最后解决子 NLP。 但是，如果您能够深入了解 GAMS 模型文件，那也是一种不错的选择。