Memory limit: ``h_data``
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- Memory size **per CPU core**

- Format: number + ``g`` (in gigabytes), e.g. ``-l h_data=4g`` (4 gigabytes of memory per CPU core)

- A job *may* be terminated if ``h_data`` is reached.

- The job will not start if ``h_data`` is too large (i.e. no available compute nodes satisfying the request)

- When multiple cores are requested, the product of ``h_data`` and the number of cores is the total memory size.