The SPLASH-2 programs: characterization and methodological considerations
ISCA '95 Proceedings of the 22nd annual international symposium on Computer architecture
Analyzing memory access intensity in parallel programs on multicore
Proceedings of the 22nd annual international conference on Supercomputing
Memory Systems: Cache, DRAM, Disk
Memory Systems: Cache, DRAM, Disk
Automatic detection of parallel applications computation phases
IPDPS '09 Proceedings of the 2009 IEEE International Symposium on Parallel&Distributed Processing
Understanding PARSEC performance on contemporary CMPs
IISWC '09 Proceedings of the 2009 IEEE International Symposium on Workload Characterization (IISWC)
Automatic structure extraction from MPI applications tracefiles
Euro-Par'07 Proceedings of the 13th international Euro-Par conference on Parallel Processing
| Hi-index | 0.00 |
Manycores are very effective in scaling parallel computational performance. However, it is not clear if current memory technologies can scale to support such highly parallel processors. In this paper, we examine the memory bandwidth and footprint required by a number of high-performance scientific applications. We find such applications require a per-core memory bandwidth of ~ 300MB/s, and have a memory footprint of some 300MB per-core. When comparing these requirements with the limitations of state-of-the-art DRAM technology, we project that in the scientific domain, current memory technologies will likely scale well to support more than ~ 100 cores on a single chip, but may become a performance bottleneck for manycores consisting of more than 200 cores.