On 8/1/11 10:21 AM, Ondřej Čertík wrote:
On Sun, Jul 31, 2011 at 12:37 AM, Jason Grout
<jason-s...@creativetrax.com> wrote:
On 7/29/11 5:11 PM, Jason Grout wrote:
Hi everyone,
I'd like to announce a trial beta run of a public single cell server:
http://sagemath.org:5467/
The idea is that this is a single cell that can very easily be embedded
in any webpage. This is the start of a comprehensive Sage web service as
well, and lays a piece of the ground work for a much more scalable model
for doing computations in the normal notebook.
It's ready to be hammered by the larger community at this point. I will
be mentioning this next week at Mathfest, so please try to break it :).
I posted a log of all commands that have been run on the singlecell server.
http://sage.math.washington.edu/home/jason/commands.html
Of particular note are the commands around 2011-07-31 03:03:07.436000
(search for that string), where someone is apparently testing the security
of the setup. Whoever did it, how did the security and infinite loop tests
go?
I would be interested in that too. How do you handle such infinite
loops on the server? Do you have some limit on the CPU time allowed
per evaluation?
We setrlimit a CPU time limit (currently 100 seconds) for the process
before we execute the user code. We also set a memory limit of 2500M.
These are passed in the configuration for launching user code, and the
setrlimit happens here:
https://github.com/jasongrout/simple-python-db-compute/blob/master/device_process.py#L518
Jason
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