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While Virtual Reality meanwhile reaches good results both in image quality and in fast user feedback using parallel computation techniques , the methods for interacting with these systems need to be improved . This development not only broadens the user community for parallel I / O techniques but also provides new insights into the functionality required in general-purpose scalable I / O libraries and the techniques required to achieve high performance I / O on scalable parallel computers . Victor Travieso has joined the COSMOS team to provide user support for parallel programming and optimisation on the Altix / Itanium2 architecture . New , flexible system architectures like global shared memory , developed by Hewlett-Packard for Exemplar S - and X-Class technical servers , are giving a wider range of users access to parallel processing power . I believe that the user base for parallel computing will only be widened through the availability of higher level parallel abstractions such as TOP-C , which ease the burden of writing parallel software . The access_control attribute determines whether the RM should interact with the system management command , spacs_cntrl , to allow users access to parallel nodes .