| A. Saulsbury and A. Nowatzyk. Implementing simple COMA on S3-MP. Presentation at The Fifth Workshop on Scalable Shared Memory Multiprocessors, Santa Margherita Ligure, Italy, June 1995. http://playground.sun.com:80/pub/S3.mp/simplecoma /isca-95/present.html |
....physical address of a request can map to different blocks of DRAM over time, as the COMA mechanisms move blocks among nodes. The implementation of this mapping can be done in one of two ways: either by modifying the memory controller or by modifying the virtual memory subsystem, as in Simple COMA [7]. With a shrink wrapped OS the virtual memory subsystem cannot be modified, so a custom memory controller is required. Evidence available to date still suggests that the leading shrinkwrapped OS s do not scale much beyond two to four processors [8] Adding the development cost of a custom memory ....
A. Saulsbury and A. Nowatzyk. Implementing simple COMA on S3-MP. Presentation at The Fifth Workshop on Scalable Shared Memory Multiprocessors, Santa Margherita Ligure, Italy, June 1995. http://playground.sun.com:80/pub/S3.mp/simplecoma /isca-95/present.html
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