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| Content Provider | ACM Digital Library |
|---|---|
| Author | Brooks, David Lee, Benjamin C. |
| Abstract | Increasing demand for power-efficient, high-performance computing requires tuning applications and/or the underlying hardware to improve the mapping between workload heterogeneity and computational resources. To assess the potential benefits of hardware tuning, we propose a framework that leverages synergistic interactions between recent advances in (a) sampling, (b) predictive modeling, and (c) optimization heuristics. This framework enables qualitatively new capabilities in analyzing the performance and power characteristics of adaptive microarchitectures. For the first time, we are able to simultaneously consider high temporal and comprehensive spatial adaptivity. In particular, we optimize efficiency for many, short adaptive intervals and identify the best configuration of 15 parameters, which define a space of 240B point. With frequent sub-application reconfiguration and a fully reconfigurable hardware substrate, adaptive microarchitectures achieve $bips^{3}/w$ efficiency gains of up to 5.3x (median 2.4x) relative to their static counterparts already optimized for a given application. This 5.3x efficiency gain is derived from a 1.6x performance gain and 0.8x power reduction. Although several applications achieve a significant fraction of their potential efficiency with as few as three adaptive parameters, the three most significant parameters differ across applications. These differences motivate a hardware substrate capable of comprehensive adaptivity to meet these diverse application requirements. |
| Ending Page | 47 |
| Page Count | 12 |
| Starting Page | 36 |
| File Format | PDF MP4 MP2 / MPA / MP3 |
| ISSN | 01635964 |
| DOI | 10.1145/1353534.1346288 |
| Journal | ACM SIGARCH Computer Architecture News (CARN) |
| Issue Number | 1 |
| Volume Number | 36 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1981-04-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Adaptivity Microarchitecture Simulation Efficiency Regression Inference Performance Reconfigurablity Statistics Power |
| Content Type | Audio Text |
| Resource Type | Article |
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