We have proposed an ``Asymmetric Distributed Shared Memory: ADSM'',
that provides high-speed-update distributed memory access by
software. On the ADSM, various optimizations can be performed.  The
compiler can generate the instructions for managing consistency
according to the consistency protocol we want to implement.  The
compiler reduces the overhead of the shared write by reducing the
number of instructions for managing consistency.  We have
implemented prototypes of the compiler and the runtime system for
the ADSM on a multicomputer Fujitsu AP1000+. We evaluate the
effectiveness of the ADSM scheme by experiments.