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Node storage file switch |
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C Name
CPX_PARAM_NODEFILEIND
C++ Name
NodeFileInd
Java Name
NodeFileInd
.NET Name
NodeFileInd
InteractiveOptimizer
mip strategy file
Identifier
2016
Description
Used when working memory (CPX_PARAM_WORKMEM
, WorkMem
) has been exceeded by the size of the tree. If the node file parameter is set to zero when the tree memory limit is reached, optimization is terminated. Otherwise, a group of nodes is removed from the in-memory set as needed. By default, CPLEX transfers nodes to node files when the in-memory set is larger than 128 MBytes, and it keeps the resulting node files in compressed form in memory. At settings 2 and 3, the node files are transferred to disk, in uncompressed and compressed form respectively, into a directory named by the working directory parameter (CPX_PARAM_WORKDIR
, WorkDir
), and CPLEX actively manages which nodes remain in memory for processing.
Values
Value |
Meaning |
---|---|
0 |
No node file |
1 |
Node file in memory and compressed; default |
2 |
Node file on disk |
3 |
Node file on disk and compressed |
CPX_PARAM_WORKMEM
, WorkMem
and CPX_PARAM_WORKDIR
, WorkDir
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