[Rcpp-devel] clusterExport fails on Rcpp functions

[JJ Allaire]

The problem is that Rcpp functions created via sourceCpp can't be
serialized (their backing shared library is gone when they are
re-serialized). The solution to this is to either:

a) Rebuild them on the cluster nodes (i.e. just include a string with their
source and then call sourceCpp on each node); or

b) Move your C++ functions into an R package that's available on all the
nodes.


On Fri, Sep 11, 2015 at 7:55 AM, Rguy <rguy at 123mail.org> wrote:

> I find that when I attempt to export Rcpp functions to a cluster using the
> R clusterExport function I get the following error (or some variant
> thereof):
>
> Error in checkForRemoteErrors(val) :
>   5 nodes produced errors; first error: NULL value passed as symbol address
>
> I am running Windows 7, and the cluster is on a quadcore machine.
> Exporting ordinary R functions is completely error-free in my setup.
>
> Has anyone else experienced this problem? Any suggestions on a fix? Thanks.
>
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