For the last decade there have been strong research activities in many areas about the software distributed shared-memory (SDSM) systems, such as applications, protocols, and compiler optimizations. But, the current Ethernet-based SDSM system incurs high execution overhead due to process interruption at data communication for memory consistency. In this paper, we present the implementation of the SDSM system to use the next generation of an interconnection technique, i.e., the InfiniBand Architecture (IBA) which supports shared-memory programming semantics by means of remote direct-memory access (RDMA) and atomic operations. Our implementation is based on the lazy release consistency model, and the data communications for memory consistency between processes are minimized. We show that our SDSM to use full features of the IBA can improve the performance significantly over the IPoIB-based SDSM system by reducing the communication overhead for memory consistency.