Re: Possible to debug parallel execution?

[Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>]

On Tue, May 07, 2019 at 02:25:38PM -0500, Hans L wrote:
> I created a script that is compute-intensive and using parfor.  I neglected
> to add any sort of progress output and its already been running a while, so
> I am wondering if there is a way to see the current variables in a break
> loop (breaking with Ctrl-C).
> In non-parallel scripts, I have been able to break, and output local loop
> variables to see the progress, but it seems these aren't accessible when
> the script is threaded?  Any ideas?

Alas, the GP debugger can only access the variable from the main thread.

Otherwise you can use the C debugger.
On Linux if your gp pid is $N do
gdb /proc/$N/self $N
and then
thread apply 1 bt
thread apply 2 bt
etc.

Cheers,
Bill.