The development of VisLT visualization service in Openstack cloud infrastructure

The paper presents the development of visualization software as a service in the OpenStack cloud infrastructure. VisLT cloud visualization service is developed for visualizing the results computed and stored in the private cloud infrastructure. Partial dataset transfer from the OpenStack object storage is developed to reduce the communication between different parts of the cloud infrastructure. The cloud services are developed by using Apache jclouds API to enhance the management of cloud infrastructure and to increase the accessibility of the visualization service. GPU is virtualized as a PCI device employing direct pass-through technology on the hardware virtual machines of Xen hypervisor to ensure fast remote rendering, which is a key feature of distributed visualization systems. The extraction of crack surfaces and computations of flows through the aortic valve are considered as pilot applications of the developed visualization service. The performance of VisLT measured on the XEN hardware virtual machines is compared to the performance attained on the native hardware.