HP SP750 - Professional - 256 MB RAM Spezifikationen Seite 25

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7
CHAPTER 2
Required Hardware & Software Configurations
2.2 Memory and General Requirements
MSC.Patran memory requirements vary according to model size and actions
performed. The following guidelines are based on typical use. Solvers or other
software that run concurrently with MSC.Patran may increase RAM, swap (also
referred to as virtual memory), and disk space requirements.
RAM and Swap Guidelines
MSC.Patran typically generates memory, “memalloc”, or “PDB” errors when it is
unable to obtain sufficient memory. Memory in this context is the sum of physical
RAM and paging (swap) space.
Since RAM memory is much faster than disk-based swap memory, increasing the
amount of RAM typically improves performance. A good general rule is to provide
25% to 30% of total memory as RAM. Consult your operating system documentation
for additional information.
See UNIX Shell Resource Limits (p. 109) for additional information on accessing
memory.
Memory and Disk Space Requirements
The followingtables showdisk space,swap, andRAM guidelinesfor small,medium,
and large analysis models. MSC.Patran may actually run with fewer resources than
shown, but we recommend these minimums for practical use.
Table 2-2 UNIX Disk Space and Memory Requirements
Memory Type Minimum Standard
Large
Models
Free Random Access Memory
(RAM) per user
96 MB (Compaq Tru64)
64MB (all others)*
128 MB
-256 MB
256 MB
-512 MB
Paging Disk Space (Swap)
400 MB (Compaq Tru64)
192 MB (all others)
384 MB 768 MB
Scratch Disk Space (/tmp) 50 MB Solver
Dependent
Solver
Dependent
Scratch Disk Space (/var/tmp) 10MB 10MB 10MB
ops_manual.book Page 7 Friday, July 27, 2001 12:07 PM
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