Flash drives with nice properties, e.g. good random read performance, has shown great potential to replace the current dominant storage medium hard disks. However, there are not many literatures that have conducted comprehensive study on the flash drive performance. In this paper, we aim to design a systematic strategy to efficiently measure the performance parameters of flash drives. We propos...

Traditional memory allocation mechanisms are not suitable for new DRAM-based storage systems because they use memory inefficiently, particularly under changing access patterns. In contrast, a log-structured approach to memory management allows 80-90% memory utilization while offering high performance. The RAMCloud storage system implements a unified log-structured mechanism both for active info...

The need for ultra low power circuits has forced circuit designers to scale voltage supplies into the sub-threshold region where energy per operation is minimized [1]. The problem with this is that the traditional 6T SRAM bitcell, used for data storage, becomes unreliable at voltages below about 700 mV due to process variations and decreased device drive strength [2]. In order to achieve reliab...

We live in a world where our personal data are both valuable and vulnerable to misappropriation through exploitation of security vulnerabilities in online services. For instance, Dropbox, a popular cloud storage tool, has certain security flaws that can be exploited to compromise a users data, one of which being that a user’s access pattern is unprotected. We have thus created an implementation...

We improve the design and implementation of two-party and three-party authenticated dynamic dictionaries and apply these dictionaries to cryptocurrency ledgers. A public ledger (blockchain) in a cryptocurrency needs to be easily verifiable. However, maintaining a data structure of all account balances, in order to verify whether a transaction is valid, can be quite burdensome: a verifier who do...

Digital computers have changed human society in a profound way over the last 50 years. Key properties that contribute to the success of the computer are flexible programmability and fast access to large amounts of data and instructions. Effective access to algorithms and data is a fundamental property that limits the capabilities of computer systems. For PC computers, the main memory consists o...

Several cache designs and different types of cache configurations are observed to improve and design a cache memory that can help enhance communication between main memory and CPU. The objective is to understand cache latency and energy by studying and discussing designs such as SRAM, eDRAM, and STT – RAM. And observe different types of cache configuration such as fully associative cache, direc...

The growing gap between on-chip gates and off-chip I/O bandwidth argues for ever larger amounts of on-chip memory. Emerging portable consumer technology, such as digital cameras, will also require more memory than can easily be supported on logic-oriented ASIC processes. Most ASIC memory systems are P-load SRAM, but this circuit technology is neither dense nor power efficient. This paper descri...