Memory Allocation

Memory Assignment By Size

To allocate a subset of physical memory to a virtual partition, you specify the desired amount of memory (a size) to allocate to a partition using the mem::<size> parameter in the vparcreate or vparmodify commands.

For example, to create a partition with 1024 MB of memory, the command is:

# vparcreate -p vpar2 -a mem::1024

When specifying memory by size, note the following:

The unit for the specified size of memory is megabytes not gigabytes.
Memory is allocated in multiples of 64 MB. Any specified size that is not a multiple of 64 MB is rounded up to the nearest 64 MB boundary.
For example, if you specify 1 MB, 64 MB will be allocated.
The default memory size is 0 MB, so you need to specify enough memory for your applications and the operating system.
When modifying the amount of memory assigned to a partition, the target partition must be down.

Specifying a Range

Although you can specify memory ranges using -amem:::base:range (for details, see the manpages), this is not recommended.

The only time you would specify memory by range is for NUMA. The rp5470/L3000 and rp7400/N4000 servers do not have NUMA architectures, so there is no need to specify ranges with these servers. Although the Superdome has a NUMA architecture, the HP-UX OS does not yet support the NUMA features.

Memory Allocation

Technical documentation

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Memory Assignment By Size

Specifying a Range