SUNNYVALE, Calif., Feb. 10 /PRNewswire-FirstCall/ — Silicon Graphics, Inc. (SGI) (Nasdaq: SGIC) is in a category all by itself when it comes to massive globally shared main memory and globally addressable memory on SGI(R) Altix(R) 4700 systems. With numerous installations in the 4 TB range, and a number more in the 8 TB range, the groundbreaking scalability of SGI systems extends to 21 TB of globally addressable main memory at customer sites. This is over five times the size of memory that other vendors can offer today. The system is designed to accommodate 128 terabytes of globally shared memory under the control of a single instance of the Linux operating system! The system may also be partitioned among multiple instances of Linux and provide globally addressable shared memory among OS instances via SGI’s unique NUMAlink(R) interconnect technology.