May 8, 2006

Memory-centric data management whitepaper

I have finally finished and uploaded the long-awaited white paper on memory-centric data management.

This is the project for which I origially coined the term “memory-centric data management,” after realizing that the prevalent “in-memory DBMS” creates all sorts of confusion about how and whether data persists on disk. The white paper clarifies and updates points I have been making about memory-centric data management since last summer. Sponsors included:

If there’s one area in my research I’m not 100% satisfied with, it may be the question of where the true hardware bottlenecks to memory-centric data management lie (it’s obvious that the bottleneck to disk-centric data management is random disk access). Is it processor interconnect (around 1 GB/sec)? Is it processor-to-cache connections (around 5 GB/sec)? My prior pronouncements, the main body of the white paper, and the Intel Q&A appendix to the white paper may actually have slightly different spins on these points.

And by the way — the current hard limit on RAM/board isn’t 2^64 bytes, but a “mere” 2^40. But don’t worry; it will be up to 2^48 long before anybody actually puts 256 gigabytes under the control of a single processor.

Comments

2 Responses to “Memory-centric data management whitepaper”

  1. DBMS2 — DataBase Management System Services»Blog Archive » White paper on memory-centric data management — excerpt on May 10th, 2006 11:41 am

    [...] Here’s an excerpt from the introduction to my new white paper on memory-centric data management. I don’t know why WordPress insists on showing the table gridlines, but I won’t try to fix that now. Anyhow, if you’re interested enough to read most of this excerpt, I strongly suggest downloading the full paper. [...]

  2. Is data warehousing now all about sequential access? | DBMS2 -- DataBase Management System Services on May 14th, 2009 1:29 am

    [...] Memory-centric systems, notably SAP’s BI Accelerator [...]

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