MOD

Micro-architectural analysis is critical to investigate the interaction between workloads and processors. While today's aggressive out-of-order processors provide a rich set of performance events for deep execution cycle analysis, OLTP characterization ...

The growing appetite for in-memory computing is increasing memory's share of total server power consumption. However, memory power consumption in database management systems is not well understood. This paper presents an empirical characterization of ...

General Purpose computing on Graphics Processing Units (GPGPU) has become an increasingly popular option for accelerating database queries. However, GPUs are not well-suited for all types of queries as data transfer costs can often dominate query ...

Column Imprints is a pre-filtering secondary index for answering range queries. The main feature of imprints is that they are light-weight and are based on compressed bit-vectors, one per cacheline, that quickly determine if the values in that cacheline ...

Previous database accelerator proposals such as the Q100 provide a fixed set of database operators, chosen to support a target query workload. Some queries may not be well-supported by a fixed accelerator, typically because they need more resources/...

GPUs are increasingly adopted for large-scale database processing, where data accesses represent the major part of the computation. If the data accesses are irregular, like hash table accesses or random sampling, the GPU performance can suffer. ...

In the parallel execution of queries in Non-Uniform Memory Access (NUMA), the operating system maps database processes/threads (i.e., workers) to the available cores across the NUMA nodes. However, this mapping results in poor cache activity with many ...

This short paper present a collection of GPU lightweight decompression algorithms implementations within a FOSS library, Giddy - the first to be published to offer such functionality. As the use of compression is important in ameliorating PCIe data ...

The rise of NVRAM technologies promises to change the way we think about system architectures. In order to fully exploit its advantages, it is required to develop systems specially tailored for NVRAM devices. Not only this imposes great challenges, but ...

In the last decade, the work centered around specialized co-processors for DBMSs has largely focused on efficient query processing algorithms for individual operators. However, a major limitation of existing co-processor systems is the PCI bottleneck, ...