Noname manuscript No. (will be inserted by the editor) Evaluation of Messaging Middleware for High Performance Cloud Computing

Abstract Cloud computing is posing several challenges, such as security, fault tolerance, access interface singularity, and network constraints, both in terms of latency and bandwidth. In this scenario, the performance of communications depends both on the network fabric and its efficient support in virtualized en-vironments, which ultimately determines the overall system performance. To solve the current network constraints in cloud services their providers are de-ploying high-speed networks, such as 10 Gigabit Ethernet. This paper presents an evaluation of High Performance Computing message-passing middleware on a cloud computing infrastructure, Amazon EC2 cluster compute instances, equipped with 10 Gigabit Ethernet. The analysis of the experimental results, confronted with a similar testbed, has shown the significant impact that vir-tualized environments still have on communications performance, which de-mands more efficient communication middleware support to get over current cloud network limitations