Extending Memory Capacity in Consumer Devices with Emerging Non-Volatile Memory: An Experimental Study

by   Geraldo F. Oliveira, et al.

The number and diversity of consumer devices are growing rapidly, alongside their target applications' memory consumption. Unfortunately, DRAM scalability is becoming a limiting factor to the available memory capacity in consumer devices. As a potential solution, manufacturers have introduced emerging non-volatile memories (NVMs) into the market, which can be used to increase the memory capacity of consumer devices by augmenting or replacing DRAM. Since entirely replacing DRAM with NVM in consumer devices imposes large system integration and design challenges, recent works propose extending the total main memory space available to applications by using NVM as swap space for DRAM. However, no prior work analyzes the implications of enabling a real NVM-based swap space in real consumer devices. In this work, we provide the first analysis of the impact of extending the main memory space of consumer devices using off-the-shelf NVMs. We extensively examine system performance and energy consumption when the NVM device is used as swap space for DRAM main memory to effectively extend the main memory capacity. For our analyses, we equip real web-based Chromebook computers with the Intel Optane SSD, which is a state-of-the-art low-latency NVM-based SSD device. We compare the performance and energy consumption of interactive workloads running on our Chromebook with NVM-based swap space, where the Intel Optane SSD capacity is used as swap space to extend main memory capacity, against two state-of-the-art systems: (i) a baseline system with double the amount of DRAM than the system with the NVM-based swap space; and (ii) a system where the Intel Optane SSD is naively replaced with a state-of-the-art (yet slower) off-the-shelf NAND-flash-based SSD, which we use as a swap space of equivalent size as the NVM-based swap space.


page 17

page 24


A Cycle-level Unified DRAM Cache Controller Model for 3DXPoint Memory Systems in gem5

To accommodate the growing memory footprints of today's applications, CP...

Enabling Design Space Exploration of DRAM Caches in Emerging Memory Systems

The increasing growth of applications' memory capacity and performance d...

Hardware Memory Management for Future Mobile Hybrid Memory Systems

The current mobile applications have rapidly growing memory footprints, ...

Sectored DRAM: An Energy-Efficient High-Throughput and Practical Fine-Grained DRAM Architecture

There are two major sources of inefficiency in computing systems that us...

System measurement of Intel AEP Optane DIMM

In recent years, memory wall has been a great performance bottleneck of ...

DR-STRaNGe: End-to-End System Design for DRAM-based True Random Number Generators

Random number generation is an important task in a wide variety of criti...

Evaluating Persistent Memory Range Indexes: Part Two

Scalable persistent memory (PM) has opened up new opportunities for buil...

Please sign up or login with your details

Forgot password? Click here to reset