how long are definitions saved in a .sagews file?

[valer...@gmail.com]

I find that if I open a .sagews that I worked on yesterday, all my definition are still in the memory (even if I had completely logged out of SMC). But if I open one that I last worked on two weeks ago, there are no saved definitions. So I wonder how the system decides when to reset the definitions.

Thanks for any information

 

[Hal Snyder]

Variable definitions are stored in a child process of the sage server. They will be retained until one of the following processes stops:

- the child process

- the sage_server process

- the project process

Variables are therefore reset when any of the following happens:

- worksheet is restarted ("Restart" button at top of .sagews)

- Worksheet server is restarted ("Restart Sage Worksheet Server" button on project Settings and configuration page)

- project is restarted ("Restart project" dialogue on project Settings and configuration page)

If your project is on a free server, it will be stopped whenever the Google pre-emptible server instance restarts, typically once per 24 hours.

More info here: https://github.com/sagemathinc/smc/wiki/Why-should-I-purchase-a-subscription%3F

In any case, projects are stopped after some number of hours of non-interactive use, determined by the "Idle timeout" project setting on project Settings and configuration.

[Hal Snyder]

Answer edited and added to SMC wiki:

How long are definitions saved in a .sagews file?

https://github.com/sagemathinc/smc/wiki/sagews#defns-saved

[valer...@gmail.com]

Thanks for the information, that was quite useful