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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chatterjee, S. Sen, S. |
| Copyright Year | 2000 |
| Description | Author affiliation: Dept. of Comput. Sci., North Carolina Univ., Chapel Hill, NC, USA (Chatterjee, S.) |
| Abstract | We investigate the memory system performance of several algorithms for transposing an N/spl times/N matrix in-place, where N is large. Specifically, we investigate the relative contributions of the data cache, the translation lookaside buffer, register tiling, and the array layout function to the overall running time of the algorithms. We use various memory models to capture and analyze the effect of various facets of cache memory architecture that guide the choice of a particular algorithm, and attempt to experimentally validate the predictions of the model. Our major conclusions are as follows: limited associativity in the mapping from main memory addresses to cache sets can significantly degrade running time; the limited number of TLB entries can easily lead to thrashing; the fanciest optimal algorithms are not competitive on real machines even at fairly large problem sizes unless cache miss penalties are quite high: low-level performance tuning "hacks", such as register tiling and array alignment, can significantly distort the effects of improved algorithms; and hierarchical non-linear layouts are inherently superior to the standard canonical layouts (such as row- or column-major) for this problem. |
| Starting Page | 195 |
| Ending Page | 205 |
| File Size | 144062 |
| Page Count | 11 |
| File Format | |
| ISBN | 0769505503 |
| DOI | 10.1109/HPCA.2000.824350 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-01-12 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Computer science Electrical capacitance tomography Electronic switching systems Registers Read only memory Degradation Multidimensional systems Fast Fourier transforms Educational technology Educational programs |
| Content Type | Text |
| Resource Type | Article |
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