Virtual Interface Architecture (VIA) established a communication model with low latency and high bandwidth, defined the standard of user-level high-performance communication specification in cluster system. This paper analyzes the current development, principle and implementations of VIA, and presents a user-level high-performance communication software MyVIA based on Myrinet, which is comfortable with VIA specification. The paper first describes the design principle and framework of MyVIA, and then proposes new technologies for MyVIA which include User TLB, continued host physical memory and varied NIC buffer, the pipelining communication based on resource and DMA chain, physical descriptor ring and dynamic cache. Experimental results of performance compare and analysis are presented, and the bandwidth of MyVIA for 4KB message is 250MB/s, the lowest one-way latency is 8.46us, which shows the performance of MyVIA surpassed that of other implementations of VIA.