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Toby Devlin

Memory Limits

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Linux users running TUFLOW-FV will occasionally have crashes related to segmentation faults. Many of these can be due to mysterious processor specific errors, but are ultimately a memory related error.

A key cause can be default memory limits imposed on the process. To stop this from occurring ensure that the bash script, or pbs input script with which you launch the job has the following line


ulimit -s unlimited


If not, then the model will often crash without warning during the initialization, and only a PBS error file might have any information about a segmentation fault.


Windows users need not worry, as the memory limits are adjusted automatically in the software and should generally stop these errors from occurring.

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