Hello, I am exploring the usage of the Gem5-GPU model GCN3_X86 (version 22.1.0.0). I have the following queries/questions if you could kindly clarify:
1. In previous versions of Gem5 we could use --outdir or -d option to redirect the output to a specific directory. That appears to be not supported in the version specified above (please correct me if I am wrong). Is there any other way to redirect simulation outputs to specific directories other than m5out? Otherwise, is there any other way to run multiple instances of gem5, ensuring that the stats.txt of one application is not overwritten by other instances running at the same time and saving the output in the same directory (m5out). 2. For GCN3_X86, I assume -mem-type defines available memory models for CPU/Host memory. By the default settings, does this work as a "Unified Memory" ? If not, how to define the memory type for the GPU (global memory), if it is different from CPU main memory? 3. --list-rp-types lists the available replacement policies, but what is the option to select one of those? 4. -n defines the number of CPUs or cores, L1d_size and L2_size should be the size per core or per CPU? 5. Are there any output parameters that report % of resources (e.g. CUs) used by the application, or quantify memory contention in unified memory? Thanks, *K. Zaman*
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