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NodefileStart
Write MIP nodes to disk
Type: | double |
---|---|
Default value: | Infinity |
Minimum value: | 0 |
Maximum value: | Infinity |
If you find that the Gurobi optimizer exhausts memory when solving a
MIP, you should modify the NodefileStart
parameter. When the
amount of memory used to store nodes (measured in GBytes) exceeds the
specified parameter value, nodes are written to disk. We recommend a
setting of 0.5
, but you may wish to choose a different value,
depending on the memory available in your machine. By default, nodes
are written to the current working directory. The
NodefileDir
parameter can be used to choose a different location.
If you still exhaust memory after setting the NodefileStart
parameter to a small value, you should try limiting the thread count.
Each thread in parallel MIP requires a copy of the model, as well as
several other large data structures. Reducing the
Threads
parameter can sometimes significantly reduce memory usage.
Note: Only affects mixed integer programming (MIP) models