Cluster computing has become a valid alternative for high performance computing. To fully exploit the computing power of these environments, one must utilize high performance network and protocol technologies, since parallel applications running on clusters require low latency and high throughput. To address this issue, Maestro2 high performance network technology has been developed. Parallel applications running on clusters usually use two different known alternatives to share information; message passing or distributed shared memory. Maestro2 already supports a high performance message passing communication system, MMP. This paper describes a first version of a distributed shared memory system based on Maestro2, and a first set of experimental results is presented.