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Hamish, thanks for this; it looks like you've got it. I can see the
memory dissapear towards zero, and then there's a long pause in gui
response, and r.contour is no more...<br>
<br>
I'll have to see if I've got an old disk lying around to add for more
swap. Or an old wallet with money for more RAM.<br>
<br>
If it's still of interest, I have 256M RAM, 512M swap. <br>
<br>
At <br>
rows: 8400<br>
cols: 7200<br>
r.contour can complete successfully.<br>
<br>
At<br>
rows: 8400<br>
cols: 7680<br>
r.contour gets booted off before completing.<br>
<br>
Thanks again,<br>
Michael<br>
<br>
<br>
Hamish wrote:
<blockquote cite="mid20060310172914.58883b11.hamish_nospam@yahoo.com"
type="cite">
<blockquote type="cite">
<pre wrap="">I've watched the memory use climb while the CPU cycles drop to 1 or 2
percent. Presumably it does into a swap frenzy. The same thing happens
whether r.contour finishes successfully or not.
</pre>
</blockquote>
<pre wrap=""><!---->
how big does the memory get? ("M" in top will sort by memory if the
process slows down) Is that bigger than what you have installed?
Usually a process gets killed when you run out of memory+swap space and
the OS has to take drastic action to keep the rest of the system from
crashing.. it kills out the worst memory hog.
</pre>
<blockquote type="cite">
<pre wrap="">How would I measure the size of the areas?
</pre>
</blockquote>
<pre wrap=""><!---->
I was interested in the raster region resolution.
'g.region -p' will show number of rows and columns.
v.info will show the number of vector entities involved.
Hamish
</pre>
</blockquote>
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