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Modern computer systems have large amounts of DRAM running at fast cycle times. JEDEC standards for DDR3 DRAMs set the bounds of operation, but there is significant opportunity for maximizing the operating performance and reliability by optimizing the electrical parameters and the register settings across the many DIMMs in a system. Specifically, it is essential for the system designers to maximize...
DIMMs built with DDR4 (Double Data Rate 4th-generation) SDRAM (Synchronous Dynamic Random-Access Memory) are the current memory components used on HPC (High Performance Computing) systems. The DDR4 signal interfaces operate up to a 3200 Mbps data rate and at 1.2 V. This is a higher frequency at a lower voltage, therefore lower power, than the third generation DDR3 DIMMs. The higher frequency and lower...
Optimization of memory power is an important design objective in any computer device. However, servers are especially a challenge because the number of DRAMs are large and in aggregate can consume up to 40% of the overall system power. This paper presents power measurement experiments under a variety of server system conditions. Some techniques are proposed to optimize the overall power consumption...
Memory plays a significant role in successful operations of modern day servers. DDR3 memory has been around for a while and the next generation is almost available. There are lots of challenges which still exist and are not fully uncovered with the DDR3 based ISRDIMMs and discussed in this paper is a unique problem faced during the server memory characterization of ISRDIMMs. Issues were unearthed...
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