Did you read the CPAN summary for MCE (v 1.805)?

It appears to suggest a host of approached to your (code-less) question:

MCE::Signal

    Temporary directory creation, cleanup, and signal handling.
MCE::Util

    Utility functions for Many-Core Engine.

MCE EXTRAS ^

There are 4 add-on modules for use with MCE.

MCE::Candy

    Provides a collection of sugar methods and output iterators for pr
+eserving output order.
MCE::Mutex

    Provides a simple semaphore implementation supporting threads and 
+processes.
MCE::Queue

    Provides a hybrid queuing implementation for MCE supporting normal
+ queues and priority queues from a single module. MCE::Queue exchange
+s data via the core engine to enable queuing to work for both childre
+n (spawned from fork) and threads.
MCE::Relay

    Enables workers to receive and pass on information orderly with ze
+ro involvement by the manager process while running.
[download]

If none of these are helpful, please reply with code and verbatim messages about failure modes.