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The combination of a language with fine-grain implicit parallelism and a dataflow evaluation scheme is suitable for high-level programming on massively parallel architectures. We are developing a compiler of V, a non-strict functional programming language, for EARTH(Eficient Architecture for Running THreads). Our compiler generates codes in Threaded-C, which is a lower-level programming language for EARTH. We have developed translation rules, and integrated them into the compiler. While EARTH directly supports fine-grain thread execution, thread-level optimization by compiler is also.effective on EARTH. The preliminary performance results are encouraging, although further improvement is required for non-strict datastructures. Some codes generated from V programs by our compiler achieved comparable performance with the performance of hand-written Threaded-C codes.