“Memory Bandwidth and System Balance in HPC Systems” If you are planning to attend the SuperComputing 2016 conference in Salt Lake City next month, be sure to reserve a spot on your calendar for my talk on Wednesday afternoon (4:15pm-5:00pm). I will be talking about the technology and market trends… read more
AMD Opteron Memory Configuration notes
(These are old notes for relatively old systems — I just found this in my “drafts” folder and decided to switch the status to “public” so I can find it again!) Some notes on how to determine the DRAM and Memory Controller configuration for a system using AMD Opteron/Phenom or… read more
Memory Bandwidth Requirements of the HPL benchmark
The High Performance LINPACK (HPL) benchmark is well known for delivering a high fraction of peak floating-point performance. The (historically) excellent scaling of performance as the number of processors is increased and as the frequency is increased suggests that memory bandwidth has not been a performance limiter. But this does… read more