Unexpected number of computed hashes (CUDA) about gpu-post HOT 10 CLOSED

@AndrewAR2 I just reproduced this with the most recent build: https://github.com/spacemeshos/gpu-post/actions/runs/874060571 .

You can reproduce by running /home/avive/pos-server/make test on the GC instance w the nvidia gpus.

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Please tell me how can I reproduce this bug?

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Run /home/avive/pos-server/make test on the GC instance with the 2 nvidia gpus.

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There's a check in the code after each iteration that the number of hashes computed is equal to the number of hashes requested. In the case that a POW solution is found in the iteration - 0 is set as the number of computed hashes in this iteration.

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I don't have access to /home/avive/.cargo and .rustup

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I think you'll need to clone and maybe install rust for your user like

1. git clone https://github.com/spacemeshos/pos-server.git
2. Install Rust
3. Put the latest .so lib w cuda support in the pos-compute create resources folder
4. make test

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This error is due to an old version of libgpu-setup.so in /lib that does not match the current API.

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Great news. q: is it working as expected after updating the lib on that test box?

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Yes, it is working as expected after removing the old version of the library from /lib.

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Confirmed.

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