Many thanks, memory seems to be a big problem on my server (I did
tests you suggested on my laptop and each worksheet is consumig a lot
of memory). I have seen that sagenb.org has 2GB memory - like my PC.
How many users wirk simultaneously on sagenb.org?
* I think that I can set up my personal computer as second sage server
for my class
Is it sufficient to move the ~/login/.sage directory to clone
all the work to the second server?
* I will ask our webmaster to increase memory on my virtual server on
Mondays :)
But it supprised me that sage is so memory demanding :(
The students were asked to calculate nothing more than few
limits and draw some 2d graphs.
* Is there any other possibility how to decrease the memory demand? I
tried to open 17 notebooks with notebook(ulimit="-v 10240") but this
did not help. The demand for memory was the same as for notebook()
command.
I wonder how the others use sage in education. Do they have so big
memory on their servers?
Thank you very much.
Robert
> I noticed that for my Sage server, each open worksheet took about 140MB
> of RAM. When I ran out of memory, the server froze and lots of errors
> happened. To me, it sounds like you probably ran out of memory if you
> had 15 worksheets open simultaneously (which I would calculate would
> need about 15*140=2100 MB of RAM).
>
> You can test this yourself by opening up your notebook and opening up 15
> worksheets in different tabs in your browser. Run a calculation in each
> one and check to see how much memory you have then. Also, you might see
> how much memory is consumed by running a single worksheet (i.e., check
> the memory usage, start up a single worksheet and calculate something,
> and then check the memory usage again).
>
> Jason
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