Patents by Inventor Erik R. Altman

Erik R. Altman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20020078308
    Abstract: A method and system for attached processing units accessing a shared memory in an SMP system. In one embodiment, a system comprises a shared memory. The system further comprises a plurality of processing elements coupled to the shared memory. Each of the plurality of processing elements comprises a processing unit, a direct memory access controller and a plurality of attached processing units. Each direct memory access controller comprises an address translation mechanism thereby enabling each associated attached processing unit to access the shared memory in a restricted manner without an address translation mechanism. Each attached processing unit is configured to issue a request to an associated direct memory access controller to access the shared memory specifying a range of addresses to be accessed as virtual addresses. The associated direct memory access controller is configured to translate the range of virtual addresses into an associated range of physical addresses.
    Type: Application
    Filed: December 14, 2000
    Publication date: June 20, 2002
    Applicant: International Business Machines Corporation
    Inventors: Erik R. Altman, Peter G. Capek, Michael Karl Gschwind, Harm Peter Hofstee, James Allan Kahle, Ravi Nair, Sumedh Wasudeo Sathaye, John-David Wellman