[R] checkpointing

[Andy Jacobson]

Those are good points, Duncan. I am experimenting with a nice checkpointing tool called DMTCP. It operates on the system level but is quite OS-dependent. It can be found at http://dmtcp.sourceforge.net/index.html.

Still, it would be nice to be able to checkpoint calls within R to potentially long-running processes like optim().

-Andy

On 12/13/21 11:51 AM, Duncan Murdoch wrote:
> On 13/12/2021 12:58 p.m., Greg Minshall wrote:
>> Jeff,
>>
>>> This sounds like an OS feature, not an R feature... certainly not a
>>> portable R feature.
>>
>> i'm not arguing for it, but this seems to me like something that could
>> be a language feature.
>>
> 
> R functions can call libraries written in other languages, and can start processes, etc.  R doesn't know everything going on in every function call, and would have a lot of trouble saving it.
> 
> If you added some limitations, e.g. a process that periodically has its entire state stored in R variables, then it would be a lot easier.
> 
> Duncan Murdoch

-- 
Andy Jacobson
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