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Serverless computing is renowned for its computation elasticity, yet its full potential is often constrained by the requirement for functions to operate within local and dedicated background environments, resulting in limited memory elasticity. To ...

The CXL (Compute Express Link) technology is an emerging memory interface with high-level commands. Recent studies applied the CXL memory expanding technique to mitigate the capacity limitation of the conventional DDRx memory. Unlike the prior studies to ...

The first commercial implementations of CXL-based hybrid SSDs (i.e., SSDs that are both byte- and block-addressable) are looming on the horizon. Although previous works have conducted design studies on hardware concepts as well as potential use cases, ...

A compute express link (CXL) pod is a collection of hosts attached to a CXL memory module. It provides an opportunity to port single-host shared-memory programs to execute on multiple hosts in a CXL pod, where the ported application achieves higher ...

Memory disaggregation is an approach to decouple compute and memory to minimize the total cost of ownership. However, analytical methods to study the impact of this approach are not readily available for high performance computing use cases. In this ...

Remote procedure calls are the workhorse of distributed systems. However, as software engineering trends, such as micro-services and serverless computing, push applications towards ever finer-grained decompositions, the overhead of RPC-based ...

In communication-intensive applications that run on hosts with high-speed network hardware, a common challenge arises from the significant burden placed on the native socket system within the OS. Researchers have devoted considerable effort to optimizing ...

Byte-addressable Persistent Storage (BPS), such as persistent memory and CXL-enabled SSDs, has become an extension of main memory. This opens up new possibilities for indexes that operate and persist data directly on the memory bus. Recent learned ...

Compute Express Link (CXL) is a promising technology providing connectivity between host processors and peripheral devices like accelerators or memory modules. Compute nodes are usually connected through a high-speed network like Ethernet or Infiniband. ...

This work introduces a GPU storage expansion solution utilizing CXL, featuring a novel GPU system design with multiple CXL root ports for integrating diverse storage media (DRAMs and/or SSDs). We developed and siliconized a custom CXL controller ...

Active-standby mechanisms for VM high-availability demand frequent synchronization of memory and CPU state, involving the identification and transfer of "dirty" memory pages to a standby target. Building upon the granularity offered by CXL-enabled memory ...

The Compute Express Link (CXL) is an open industry-standard interconnect between processors and devices such as accelerators, memory buffers, smart network interfaces, persistent memory, and solid-state drives. CXL offers coherency and memory semantics ...

The growing demand for memory systems with larger capacities and faster data transfer speeds has driven progress in the widespread adoption of multi-socket machines and memory expansion through Compute eXpress Link (CXL). However, processes running on ...

Memory disaggregation has emerged as an alternative to traditional server architecture in data centers to target better memory utilization and higher scalability. It involves multiple independent compute nodes and remote memory pools that get hardware ...

Row Hammer (RH) has been demonstrated as a security vulnerability in modern systems. Although commodity CPUs can handle RH-induced single-bit errors in DRAM through ECC, RH can still give rise to multi-bit uncorrectable errors (UEs) and crash the ...

Memory disaggregation is a promising architecture for modern datacenters that separates compute and memory resources into independent pools connected by ultra-fast networks, which can improve memory utilization, reduce cost, and enable elastic scaling of ...

In the landscape of High-Performance Computing (HPC), the quest for efficient and scalable memory solutions remains paramount. The advent of Compute Express Link (CXL) introduces a promising avenue with its potential to function as a Persistent Memory (...

In GPU graph analytics, the use of external memory such as the host DRAM and solid-state drives is a cost-effective approach to processing large graphs beyond the capacity of the GPU onboard memory. This paper studies the use of Compute Express Link (...

Efficient in-memory data processing relies on the availability of sufficient resources, be it CPU time or available main memory. Traditional approaches are coping with resource limitations by either adding more processors or RAM sticks to a single ...

After over a decade of researcher anticipation for the arrival of persistent memory (PMem), the first shipments of 3D XPoint-based Intel Optane Memory in 2019 were quickly followed by its cancellation in 2022. Was this another case of an idea quickly ...