[gem5-users] Low memory bandwidth achieved with STREAM benchmark

Hi Jason, We are testing the memory bandwidth program STREAM ​(https://www.cs.virginia.edu/stream/)​, but the results show that the CPU cannot fully utilize the DDR bandwidth, and the achieved bandwidth is quite low and about 1/10 of the peak bandwidth (peakBW in stats.txt). I tested the STRE

[gem5-users] Re: Low memory bandwidth achieved with STREAM benchmark

Hi, Make sure your system has enough MSHRs, out of the box, L1, and L2 are set to have a few MSHR entries. Also, stride prefetcher is not the best, you may try something better: DCPT gives me better numbers. On Fri, Apr 15, 2022 at 4:57 AM Zicong Wang via gem5-users < gem5-users@gem5.org> wrote: