This paper presents a concept of real-time parallel volume rendering system for time-varying scientific visu-alization based on the scalable architecture of ReVolver/C40 developed by Kyoto University. A preliminary experimental environment using the rendering pipeline of ReVolver/C40 and newly designed DataProbe which is an additional hardware for parallel volume data transfer is also presented. In terms of the load balancing in parallel volume rendering, a block cyclic data assignment with the early ray termination technique is also discussed.
