Your solution seems reasonable enough.
Another solution : You could schedule a task in your julia code which will
interrupt the workers after a timeout
@schedule begin
sleep(600)
if pmap_not_complete
interrupt(workers())
end
end
Start this task before executing the pmap
Note that this will work only for additional processes created on the local
machine. For SSH workers, `interrupt` is a message sent to the remote
workers, which will be unable to process it if the main thread is
computation bound.
On Thu, Apr 30, 2015 at 9:08 AM, Pavel <pavel.paramo...@gmail.com> wrote:
> Here is my current bash-script (same timeout-way due to the lack of
> alternative suggestions):
>
> timeout 600 julia -p $(nproc) juliacode.jl >>results.log 2>&1
> killall -9 -v julia >>cleanup.log 2>&1
>
> Does that seem reasonable? Perhaps Linux experts may think of some
> scenarios where this would not be sufficient as far as the
> runaway/non-responding process cleanup?
>
>
>
> On Thursday, April 2, 2015 at 12:15:33 PM UTC-7, Pavel wrote:
>>
>> What would be a good way to limit the total runtime of a multicore
>> process managed by pmap?
>>
>> I have pmap processing a collection of optimization runs (with fminbox)
>> and most of the time everything runs smoothly. On occasion however 1-2 out
>> of e.g. 8 CPUs take too long to complete one optimization, and
>> fminbox/conj. grad. does not have a way to limit run time as recently
>> discussed:
>>
>> http://julia-programming-language.2336112.n4.nabble.com/fminbox-getting-quot-stuck-quot-td12163.html
>>
>> To deal with this in a crude way, at the moment I call Julia from a shell
>> (bash) script with timeout:
>>
>> timeout 600 julia -p 8 juliacode.jl
>>
>> When doing this, is there anything to help find and stop zombie-processes
>> (if any) after timeout forces a multicore pmap run to terminate? Anything
>> within Julia related to how the processes are spawned? Any alternatives to
>> shell timeout? I know NLopt has a time limit option but that is not
>> implemented within Julia (but in the underlying C-library).
>>
>>
