3 ms·
Does the memory controller also bottom out at about half the bandwidth in practice, like on the MI250? Or is the full memory bandwidth finally available? Theo
by fransje26 3y ago
Does the memory controller also bottom out at about half the bandwidth in practice, like on the MI250? Or is the full memory bandwidth finally available?
Theoretical numbers are nice, but they are just that, ethereal numbers on a piece of paper. And on a CUDA device, I know from practice that I can get at least 90% of the memory bandwidth.
- phdelightful 3y agoDOE HPC people are not having this problem with AMD GPUs: here’s a paper that reports 1.36 TB/s on one GCD of an MI250x (theoretical is 1.6TB/s). https://dl.acm.org/doi/pdf/10.1145/3624062.3624203 https://dl.acm.org/doi/pdf/10.1145/3624062.3624203 Table 6