I am teaching an advanced computer architecture class and had the class run the GPU example that was run in the 2024 bootcamp:
docker run --volume $(pwd):$(pwd) -w $(pwd) ghcr.io/gem5/gcn-gpu:v24-0 gem5/build/VEGA_X86/gem5.opt gem5/configs/example/apu_se.py -n 3 --gfx-version=gfx902 - c gem5-resources/src/gpu/square/bin/square The example ran, however the stats.txt file had two Simulation statistics runs. The second did not appear to have any activity on the CUs. Can someone tell me why the simulation had two runs? We are using the first run as the GPU simulation statistics. We also ran the simulation while varying the number of CU's. We did not see much change in performance. I thought it was due to the benchmark that was run. One of my students modified the benchmark to use more threads, but we did not see much change. My thoughts were that this was due to the benchmark again, that the resources required were not stressed by the 4 CU's and changing the number to larger one's also did not stress the CU's. Nick
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