Hi Nikos, I notice you said the following in your original email:
In addition, I used the RISCV Ubuntu image > (https://github.com/gem5/gem5-resources/tree/stable/src/riscv-ubuntu), > I installed the gcc compiler, compile it (through qemu) and I get > wrong results too. Is this saying you get the wrong results is QEMU? If so, the bug is in GCC or the HPCG workload, not in gem5. If not, I would test in QEMU to make sure the binary works there. Another way you could test to see if the problem is your binary or gem5 would be to run it on real hardware. We have access to some RISC-V hardware here at UC Davis, if you don't have access to it. Cheers, Jason On Tue, Sep 20, 2022 at 12:58 AM Νικόλαος Ταμπουρατζής < ntampourat...@ece.auth.gr> wrote: > Dear Bobby, > > 1) I use the original riscv-fs.py which is provided in the latest gem5 > release. > I run the gem5 once (./build/RISCV/gem5.fast -d ./HPCG_FS_results > ./configs/example/gem5_library/riscv-fs.py) in order to download the > riscv-bootloader-vmlinux-5.10 and riscv-disk-img. > After this I mount the riscv-disk-img (sudo mount -o loop > riscv-disk-img /mnt), put the xhpcg executable and I do the following > changes in riscv-fs.py to boot the riscv-disk-img with executable: > > image = CustomDiskImageResource( > local_path = "/home/cossim/.cache/gem5/riscv-disk-img", > ) > > # Set the Full System workload. > board.set_kernel_disk_workload( > kernel=Resource("riscv-bootloader-vmlinux-5.10"), > disk_image=image, > ) > > Finally, in the gem5/src/python/gem5/components/boards/riscv_board.py > I change the last line to "return ["console=ttyS0", > "root={root_value}", "rw"]" in order to allow the write permissions in > the image. > > > 2) The HPCG benchmark after some iterations calculates if the results > are valid or not valid. In the case of FS it gives invalid results. As > I see from the results, one (at least) problem is that produces > different results in each HPCG execution (with the same configuration). > > Here is the HPCG output and riscv-fs.py > (http://kition.mhl.tuc.gr:8000/d/68d82f3533/). You may reproduce the > results in the video if you use the xhpcg executable > (http://kition.mhl.tuc.gr:8000/f/4ca25fdd3c/) > > Please help me in order to solve it! > > Finally, I get invalid results in the HPL benchmark in FS mode too. > > Best regards, > Nikos > > > Quoting Bobby Bruce <bbr...@ucdavis.edu>: > > > I'm going to need a bit more information to help: > > > > 1. In what way have you modified > > ./configs/example/gem5_library/riscv-fs.py? Can you attach the script > here? > > 2. What error are you getting or in what way are the results invalid? > > > > - > > Dr. Bobby R. Bruce > > Room 3050, > > Kemper Hall, UC Davis > > Davis, > > CA, 95616 > > > > web: https://www.bobbybruce.net > > > > > > On Mon, Sep 19, 2022 at 1:43 PM Νικόλαος Ταμπουρατζής < > > ntampourat...@ece.auth.gr> wrote: > > > >> > >> Dear gem5 community, > >> > >> I have successfully cross-compile the HPCG benchmark for RISCV (Serial > >> version, without MPI and OpenMP). While it working properly in gem5 SE > >> mode (./build/RISCV/gem5.fast -d ./HPCG_SE_results > >> ./configs/example/se.py -c xhpcg --options '--nx=16 --ny=16 --nz=16 > >> --npx=1 --npy=1 --npz=1 --rt=0.1'), I get invalid results in FS > >> simulation using "./build/RISCV/gem5.fast -d ./HPCG_FS_results > >> ./configs/example/gem5_library/riscv-fs.py" (I mount the riscv image > >> and put it). > >> > >> Can you help me please? > >> > >> In addition, I used the RISCV Ubuntu image > >> (https://github.com/gem5/gem5-resources/tree/stable/src/riscv-ubuntu), > >> I installed the gcc compiler, compile it (through qemu) and I get > >> wrong results too. > >> > >> Here is the Makefile which I use, the hpcg executable for RISCV > >> (xhpcg), and a video that shows the results > >> (http://kition.mhl.tuc.gr:8000/f/4ca25fdd3c/). > >> > >> P.S. I use the latest gem5 version. > >> > >> Thank you in advance! :) > >> > >> Best regards, > >> Nikos > >> _______________________________________________ > >> gem5-users mailing list -- gem5-users@gem5.org > >> To unsubscribe send an email to gem5-users-le...@gem5.org > >> > > > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org >
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