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

[robert]

Paul Rubin wrote:
> robert <no-spam at no-spam-no-spam.invalid> writes:
>> what about speed. Is it true that IronPython is almost as fast as C-Python meanwhile?
>>
>> When this all is really true, its probably a proof that putting out
>> LOCK-INC-lock's (on dicts, lists, mutables ...) in CPython to remove
>> the GIL in future should not be really so expensive as it was teached
>> in the past :-)
> 
> I don't think IronPython uses locks that way.  AFAIK it doesn't use
> reference counts, and relies on user-supplied synchronization to keep
> stuff like dictionaries safe.

thus there would be crash if 2 threads use the global variables (module.__dict__) of a module?
Cannot imagine .. that would would break most reasons for nice python threading.

-robert