NEC-LIST: disk space for file -Reply

>>> <BURKE_at_icdc.llnl.gov> 23/October/1996 03:34am >>>

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NEC-2 uses four sequential access files rather than the single direct
access file used by NEC-4, so four times as much disk space will be
needed with NEC-2. System virtual memory will probably be a better
choice in this case if it is available.

Jerry Burke
LLNL

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Hi
Although virtual memeory will use less disk space with Nec2 than the
four files, it can (is?) be a lot slower. On my PC (Pentium 100, 16 MByte
memory, with Win95, MS PS4 Fortran) a problem with a bit over 1500
segments run over 12 hours using virtual memory(4 M words core
used), while only 28 minutes when using the sequential files (0.5 M
words core used)
If you have the disk space then with nec2 rather use sequential files
than virtual memory (on PC's at least).
Louis Botha