Hi Anirudh, This question has been asked several times before. I recommend you take a look, e.g., here: https://www.mail-archive.com/gem5-users@gem5.org/msg15909.html and see if those suggestions resolve your problems. Usually this error means you either have an OS that is not supported or you haven't set up the ROCm stack correctly. In the past, I saw this error when running on Ubuntu 14/16, but I thought the updated commits on the AMD staging branch had resolved this. So, perhaps it's a problem with how you set up ROCm then (or you are using a very old commit).
A secondary problem is that the current GPU model does not fully support OpenCL, it only supports HIP: http://old.gem5.org/GPU_Models.html (it appears that the new website does appear to have that page; Jason have you already filed a JIRA ticket about this?). Note that the linked webpage does need to be updated to explain how to hipify applications. The slides from the tutorial on that webpage have some instructions about how to hipify that represent a good place to start (e.g., slide 76). In the meantime, we have created a Docker that sets up everything you need to run the GPU model: https://github.com/KyleRoarty/gem5_docker/. We are also in the process of merging this into gem5: https://gem5-review.googlesource.com/c/amd/gem5/+/26544. I suggest you use one of these as your starting point, as based on the error it's probably an issue with how you set up ROCm (as mentioned above). In terms of running backprop, the simplest thing to do would be to take the CUDA version of backprop (e.g., from Rodinia), run hipify on it, remove the dGPU copies, compile it with hipcc, and try running that. You can see an example of how Kyle did the last two steps for square (similar to you vector addition) here: https://github.com/KyleRoarty/gem5_docker/blob/master/tests/run_tests.sh Thanks, Matt On Sat, Mar 21, 2020 at 2:42 PM Anirudh <system...@gmail.com> wrote: > Thanks for the response. > > This is the command line argument: build/GCN3_X86/gem5.opt > configs/example/apu_se.py -c backprop.out -o '-n 16’. > > I also tried a simple hand written vector addition program in OpenCL, and > I was encountering the same issue. > > On Mar 21, 2020, at 12:31 AM, Abhishek Singh < > abhishek.singh199...@gmail.com> wrote: > > Hi, > Can you paste your command line? > > On Fri, Mar 20, 2020 at 8:37 PM Anirudh <system...@gmail.com> wrote: > >> Hello, >> >> I would like some help running the backprop benchmark on AMD gem5-gpu. >> The backprop benchmark is written in OpenCL. I am using g++ v 4.8. I have >> rocm 1.6 installed. >> >> I am seeing this error: “ sysconf(NPROCESSORS_CONF) failed: No such file >> or directory. request to allocate mask for invalid number”. I suspect this >> has something to do with querying some system state by OpenCL calls. >> >> I have been following a relevant post that encountered the same issue for >> HCC applications ( >> https://gem5-users.gem5.narkive.com/wMel4JdA/gem5-compute-gpu-model). >> >> Any guidance on this issue would be useful. >> >> Thanks. >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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