Abstract: The combination of cloud computing platform and virtualization technologies has brought new communication requirements to us.The inter-domain communication based on shared memory can improve the efficiency of the communication between the virtual machines running on the same physical machine.But the status-sitching in the process of memory sharing limits the optimization ability of the proposed method.New memory sharing model PAMM,by adding a management model which can aggregate memory pages in the process of memory sharing and reduce the number of super calling application,achieves the purpose of reducing the number of status-switching.The experiment shows that PAMM can enhance the efficiency of inter-domain communication based on shared memory domains.

Key words: Cloud computing,Xen,Inter-domain communication,Shared memory