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Colloquium - Austin


Scaling the Memory Wall: Technologies for Fast Memory Communication
Intel Microcomputer Research Labs
Todd Austin photo

As processor demands outpace memory, the performance of memory communication has become a critical component of good system performance. Future designs will face further degradations in memory performance brought on by architectural and technology trends that slow DRAM speed improvements, extend wire delays, and increase processor window sizes. To counter these trends, architects must endeavor to produce efficient communication mechanisms that exploit fast storage and present memory dependencies accurately and early in the processor pipeline.

In this talk, I will present two of my recent research efforts toward this goal. Memory Renaming is a microarchitecture-based technique that speeds the performance of speculative memory communication. It works by predicting memory communication early in the pipeline, and mapping the communication to fast registers. Cache-Conscious Data Placement is a compiler-based technique for reducing the frequency of data cache misses. The approach employs heuristic algorithms to find variable placement solutions that decrease inter-variable conflict, and increase cache line utilization and block prefetch.

Memory Renaming is joint work with Prof. Gary Tyson at University of Michigan. Cache-Conscious Data Placement is joint work with Prof. Brad Calder at University of California, San Diego.

Held jointly with the Department of Electrical and Computer Engineering.

The Department holds colloquia throughout the Fall and Spring semesters. These colloquia, open to the public, are typically held on Thursday afternoons, but sometimes occur at other times as well. If you would like to receive email notification of upcoming colloquia, subscribe to our Colloquia Mailing List. If you would like to schedule a colloquium, see Colloquium Scheduling.

Sign language interpreters are available upon request. Please contact Stephanie Morris at least five days prior to the colloquium.

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Department of Computer Science
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May 5, 2012 (13:29)