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We are pursuing the FUCE architecture project at Kyushu University. FUCE means FUsion of Communication and Execution. The main objective of our research is, as the name shows, to develop a new architecture that truly fuses communication and computation. The FUCE project develops a new on-chip-multi-processor and kernel software on it. We name the processor FUCE processor, and the kernel software as CEFOS (Communication and Execution Fusion OS). The FUCE processor is designed as a network node processor to perform mainly switching/transmitting of messages/transaction and handling its contents. FUCE processor architecture is designed as a multiprocessor-on-chip to support the fine-grain multi-threading. The kernel software CEFOS is also developed on the concept of multithreading. User and system processes are constructed as a set of threads, which are executed concurrently according to thread dependences.