Hi Matt, I cannot find it in the pci devices because the v1605b is an APU that has the GPU embedded. Any idea on where it could be?
By the way *export HSA_OVERRIDE_GFX_VERSION="9.0.2" *command don't seem to work. The *rocminfo* and *clinfo *still detect the GPU as gfx900. I have tried to modify the gpufs config to make the gfxVersion::gfx902 available from arguments and added the casuistries it to the */src/dev/amdgpu/amdgpu_device.hh* and */src/dev/amdgpu/amdgpu_device.cc *which already had some code taking into account the gfx902 version. Thank you! Best Regards, Pau Missatge de Poremba, Matthew <matthew.pore...@amd.com> del dia dv., 26 d’abr. 2024 a les 19:55: > [AMD Official Use Only - General] > > Hi Pau, > > > > > > You will likely need root access to rip the BIOS from a real GPU. If you > have that, I posted my notes below. Keep in mind the PCI ids might be > different: > > > > “ > > You can find devices with ROM using `find /sys/devices -name rom` > > > > For example, my MI210 is PCI device 83:00: > > > > sudo bash -c 'echo 1 > > /sys/devices/pci0000:80/0000:80:01.1/0000:81:00.0/0000:82:00.0/0000:83:00.0/rom' > > sudo cat > /sys/devices/pci0000:80/0000:80:01.1/0000:81:00.0/0000:82:00.0/0000:83:00.0/rom > > test.rom > > sudo bash -c 'echo 0 > > /sys/devices/pci0000:80/0000:80:01.1/0000:81:00.0/0000:82:00.0/0000:83:00.0/rom' > > “ > > > > > > In terms of the BIOS causing issues, I am not sure. If you are running > into issues associated with the gfx version, a hacky workaround is to use > the following environment variable within gem5 to masquerade as another > device, which might be worth a try. For example: > > > > export HSA_OVERRIDE_GFX_VERSION="9.0.2" > > > > > > > > -Matt > > > > > > *From:* Pau Galindo Figuerola <pau.galindo.figuer...@estudiantat.upc.edu> > *Sent:* Friday, April 26, 2024 10:44 AM > *To:* Poremba, Matthew <matthew.pore...@amd.com> > *Cc:* The gem5 Users mailing list <gem5-users@gem5.org> > *Subject:* Re: [gem5-users] GCN3 Full System > > > > *Caution:* This message originated from an External Source. Use proper > caution when opening attachments, clicking links, or responding. > > > > Hi Matt, > > > > I'm still working on it but I've decided to shift the project towards > modeling the AMD V1605B which has vega architecture. > > I've the real AMD V1605B device and I'm wondering how could I rip the BIOS > from it. Do you have an idea on how to do it? > > > > I build a custom image with a custom ROCm driver from Bruhnspace and I > suspect that it is now working because them are intendet to work for the > gtx902 gpu, which is the one V1605B has. > > Do you think it has something to do with the fact that the BIOS provided > in the gem5 repositories is not exactly that one from the V1605B? > > > > Thank you! > > > > Best Regards, > > Pau > > > > Missatge de Poremba, Matthew <matthew.pore...@amd.com> del dia dt., 19 de > set. 2023 a les 16:29: > > [Public] > > > > Hi Pau, > > > > > > It’s probably not possible without a lot of set up, but I have found that > GPUs that are “not supported” sometimes still work anyway with certain > compute stacks. You would probably need to: > > - Find a BIOS for a GCN3 GPU or rip it from a real GPU – This is so > the driver loads so **at least** this is required > - The GPU must be a dGPU or you would need to write an IOMMU model in > gem5 to use an APU > - You **may** need to use an older software stack – These could be > hard to find pre-packaged anymore and might require building from source > - May need to rewrite applications with older software stack API – > Dependent on previous step > > > > This will certainly not be easy, even if possible. Out of curiosity, > which parts of GCN3 are you interested in that are different from Vega or > Vega does not have? > > > > > > -Matt > > > > *From:* Pau Galindo Figuerola via gem5-users <gem5-users@gem5.org> > *Sent:* Tuesday, September 19, 2023 4:02 AM > *To:* gem5-users@gem5.org > *Cc:* Pau Galindo Figuerola <pau.galindo.figuer...@estudiantat.upc.edu> > *Subject:* [gem5-users] GCN3 Full System > > > > *Caution:* This message originated from an External Source. Use proper > caution when opening attachments, clicking links, or responding. > > > > Hi, > > > > Is it possible to use GCN3 model to run FS mode? I've done it with VEGA > but I'm interested in GCN3 architecture. > > > > In case it is what would it require? > > > > Thank you. > > > > Regards, > > Pau > >
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