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| Content Provider | ACM Digital Library |
|---|---|
| Author | Huang, Cheng-Chieh Nagarajan, Vijay Joshi, Arpit |
| Abstract | 3D-stacking technology has enabled the option of embedding a large DRAM cache onto the processor. Since the DRAM cache can be orders of magnitude larger than a conventional SRAM cache, the size of its cache tags can also be large. Recent works have proposed storing these tags in the stacked DRAM array itself. However, this increases the complexity of a DRAM cache request, which now translates into multiple DRAM cache accesses (tag/data). In this work, we address how to schedule these DRAM cache accesses. We start by exploring whether or not a conventional DRAM controller will work well. We introduce two potential baseline designs and study their limitations. We then derive a set of design principles that a DRAM cache controller must ideally satisfy. Our DRAM-cache-aware (DCA) DRAM controller, that is based on these principles, consistently improves performance over various DRAM cache organizations. |
| Starting Page | 1 |
| Ending Page | 11 |
| Page Count | 11 |
| File Format | |
| ISBN | 9781467388153 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2016-11-13 |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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