User Area > Advice
Typical error message found in the LUSAS Solver text output file (*.OUT):
***DATABASE ERROR*** ERROR DURING I/O ,
IOSTAT= 38
or other "database errors", or messages referring to subroutines DBSWRT, IOMPGW,
RCRED, RCWRT or "disk full"
Most common causes & links to solutions
These messages indicate that the PC has run out of disk
space during the analysis. Alternatively, the output file may stop
abruptly in mid-sentence. There are several reasons why your PC may run out of space, these are listed with suitable solutions below:
Model problems may cause files to become
larger than necessary
-
Eliminate
modelling problems which trigger warnings in your *.out file
-
Check
mesh refinement
(reduce number of elements or interpolation
order if appropriate)
PC settings may cause temporary files to clash
with virtual memory
-
Relocate
or re-size PC virtual memory
-
Relocate
LUSAS temporary files
-
Relocate
Windows temporary files
-
Optimise
LUSAS memory usage
PC hard drive may be getting full
-
Clear
temporary files, and delete, archive or compress
files on the drive as appropriate to make space.
-
Relocate
the model file & results files to another drive
-
Options specific to
Eigenvalue analyses
-
Reduce
the size of the results files (*.mys and *.out)
PC hardware is inadequate for the size of
problem
-
Upgrade
PC hardware
More on cause & theory links
The operating system swap/page
file is used by LUSAS Solver and expanded automatically. For some LUSAS
analyses, the virtual memory requirements can be quite
significant such that all free space on the disk or partition to
which the swap/page file is currently being written (typically
the C:\ drive on a PC) may become exhausted. In order to
understand the cause of this error more fully, you may wish to
read the following theory pages:
More on how LUSAS uses PC
resources
During solution LUSAS uses temporary files and also produces
*.out and *.mys files. In large models, these files can be of
significant size, potentially tens of gigabytes, and they may take up
considerable space on the disk where limiting space available for other
operations.
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