[Gretl-devel] Re: lists in bundles and MPI
On Wed, 12 Aug 2020, Sven Schreiber wrote:
Hi,
I'm currently facing a problem running a function inside an MPI block,
when lists inside a bundle are used and accessed. (The context is the
johansensmall.gfn package, where the combination of exogenous terms and
running it under MPI fails.)
I'm not finished with the bughunting and want to try to produce a
minimal example, but I wanted to ask here already whether my suspicion
is plausible:
Because the MPI block doesn't inherit the dataset context of the calling
environment, for the bootstrap simulation I create a new dataset
environment via 'nulldata <...> --preserve'. In there I create the
simulated series. This works in principle. Am I right in assuming that
gretl is having problems when I use a previously packaged list like
mybundle.xlist and try to stuff it into the new dataset environment? I
have double-checked that $nobs matches the length of the variables in
the list, but is that enough?
In passing a list via a bundle you're just passing a vector of
series ID numbers. This will be usable qua list in the target
function only if, in the dataset context in the target, there exist
series answering to those IDs.
Allin