Brief Summary:
Can I share Python objects between multiple processes using shared memory
(using the multiprocessing module)?
In particular, do Queues or Pipes work using shared memory?
Details:
* I have several processes each on a separate CPU core (so they run in
parallel).
* I want to share certain Python objects between the processes using shared
memory (I can handle the locking myself -- only one process can access a
variable or object at a time, so there is no conflict anyways).
* I strongly prefer that it be shared memory because I do not want to incur the
costs of having to copy data back and forth between the processes.
I am aware of the multiprocessing module. It offers:
Queues
Pipes
Shared Memory Map
Server Process
So, let me ask a few questions about those 4 items:
Queues & Pipes
These handle Python objects and variables.... However, my question is do they
use shared memory or do they require copying the data or some other method that
is more costly than shared memory?
Shared Memory Map
Does not support Python objects or variables -- thus no good to me.
Server Process
Looks like it requires another process that incurs extra processing just to
handle the data exchange -- which, if true, is bad for me.
Does this use shared memory? or does it require copying data back and forth
between processes?
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