  Multicore is an integrated circuit chip that uses two or more computational
engines (cores) places in a single processor. This new approach is used to
split the computational work of a threaded application and spread it over
multiple execution cores, so that the computer system can benefits from a
better performance and better responsiveness of the system. A thread is a unit
of execution inside a process that is created and maintained to execute a set
of actions/ instructions. Threads can be implemented differently from an
operating system to another, but the operating system is in most cases
responsible to schedule the execution of different threads. Multi-threading
improving efficiency of processor performance with a cost-effective memory
system. In this paper, we explore one approach to improve communications for
multithreaded. Pre-send is a software Controlled data forwarding technique that
sends data to destination's cache before it is needed, eliminating cache misses
in the destination's cache as well as reducing the coherence traffic on the
bus. we show how we could improve the overall system performance by addition of
these architecture optimizations to multi-core processors.
