Cant run 7900XTX

[moebius]

download Asus gpuTweak III for windows for lowering mem clock. Should work with Nvidia and Amd graka'S

[yuki0831]

Also No work on gpuowl regardless of turing clocks.
Another people who has 7900XTX still work?
Gpuowl bug or not?

who submit benchmark?
if gpuowl not work well, I sell it to auction. I also have RTX4090, so i dont need so.

[M344587487]

Have you tried setting a low memory allocation like -maxAlloc 4096 to rule too large an allocation as the problem?

[yuki0831]

a low memory allocation would not solve the issue.
default setting and low mem seting wont run at all.
RTX4090 on the otherwise, it works.

[preda]

Originally Posted by yuki0831

a low memory allocation would not solve the issue.
default setting and low mem seting wont run at all.
RTX4090 on the otherwise, it works.

So you're on Windows, right? do you know which OpenCL are you using?

It would be a bit easier to try under Linux. For that you'd need to install Linux, which is.. interesting if you've never done it before.

Sorry for not being able to help more. It looks like a faulty OpenCL compilation (I mean that the OpenCL compiler is generating strange GPU code), which may a fault of the compiler OR a fault of GpuOwl code. But we know that the compilation works correctly under Linux (as some users have reported GpuOwl working on 7900 XTX I think).

[M344587487]

It should be possible to use amd and nvidia accelerators on the same system, but historically people have had issues which may be tripping you up. You could try booting with the nvidia card removed.

Originally Posted by preda

So you're on Windows, right? do you know which OpenCL are you using?

It would be a bit easier to try under Linux. For that you'd need to install Linux, which is.. interesting if you've never done it before.

Sorry for not being able to help more. It looks like a faulty OpenCL compilation (I mean that the OpenCL compiler is generating strange GPU code), which may a fault of the compiler OR a fault of GpuOwl code. But we know that the compilation works correctly under Linux (as some users have reported GpuOwl working on 7900 XTX I think).

No way to guide them on windows to attach a debugger or a location of a log detailing the errors? Could a non-AMD OpenCL compiler be erroneously trying to compile for the card?

[preda]

Originally Posted by M344587487

Could a non-AMD OpenCL compiler be erroneously trying to compile for the card?

[even an AMD OpenCL compiler could errorneously compile, there have been multiple instances in the past with ROCm. The errors were usually in the LLVM amdgpu backend, and in time most have been ironed out]

The OpenCL driver on windows is different from the ROCm-OpenCL one. So it could manifest different bugs.

OTOH another thing that can happen is that there's a bug/cornercase in the GpuOwl code that is fine on ROCm but triggers on the windows OpenCL.

Usually the way to debug is to run the kernels one-by-one on synthetic data to see which one is affected, then to make changes until the bug does not manifest, then to dump ISA for before/after and compare, thus identify what the bug may be. Not a simple task.

Another way, if an older GPU runs fine on the same OpenCL, then dump the ISA old/new and compare.

[yuki0831]

okay. I decided to install linux. I have a question.
What linux should install?
I found that Linux has a lot of version?or softwareholder.
linux mint/ Ubuntu?/Fedora and redhatlinux.
What software recommended to install

I am linux bigginer.
I use Google search to install and setup.

Hopefully. I have two SSD. install linux another SSD.

[yuki0831]

tips. my PC environment.

Troble occured
i7 7700
32GB mem
asus z170k
rtx7900 and rtx4090
In this post xtx7900 only.
win10 latest.

anotherPC
ryzen 9 5900x
32GB mem
no gpu so running off.
win11
willing to install linux is this PC

[Prime95]

You are quite brave to take on gpuowl as your first Linux foray.

See https://www.mersenneforum.org/showthread.php?t=25601 for instructions. I use Ubuntu 19 (a 4 year old version of the OS -- it works so I dont upgrade).

[preda]

Originally Posted by yuki0831

What linux should install?

I'd recommend Ubuntu 22.04
(that's what I use myself)

https://releases.ubuntu.com/22.04/
https://releases.ubuntu.com/22.04/ub...ktop-amd64.iso