Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?

[Daniel Dittmar]

robert wrote:
> I'd like to use multiple CPU cores for selected time consuming Python 
> computations (incl. numpy/scipy) in a frictionless manner.
> 
> Interprocess communication is tedious and out of question, so I thought 
> about simply using a more Python interpreter instances 
> (Py_NewInterpreter) with extra GIL in the same process.

If I understand Python/ceval.c, the GIL is really global, not specific 
to an interpreter instance:
static PyThread_type_lock interpreter_lock = 0; /* This is the GIL */

Daniel