Module gpu_cpu_verify 

GPU vs CPU output comparison and verification utilities.

Provides tools for verifying that GPU-accelerated operations produce results within an acceptable tolerance of their CPU reference implementations.

Tolerance Metrics

Metric	Description
ToleranceMetric::MaxAbsDiff	Maximum absolute difference across all elements.
ToleranceMetric::MeanAbsDiff	Mean absolute difference.
ToleranceMetric::Psnr	Peak Signal-to-Noise Ratio (dB).
ToleranceMetric::RmsError	Root Mean Square error.

Example

use oximedia_gpu::gpu_cpu_verify::{ComparisonResult, VerificationSuite, ToleranceMetric};

let gpu_output = vec![128u8, 129, 127, 255];
let cpu_output = vec![128u8, 128, 128, 255];
let result = ComparisonResult::compare_u8(&gpu_output, &cpu_output);
assert!(result.max_abs_diff <= 1);

Structs

ComparisonResult

Detailed result of comparing two buffers element-by-element.

VerificationCase

A single test case result within a verification suite.

VerificationSuite

A suite of GPU vs CPU verification tests.

Enums

ToleranceMetric

Which metric to use for pass/fail decisions.

Functions

buffers_within_tolerance

Quick check: are two u8 buffers within max_diff of each other at every element?

compute_buffer_psnr

Quick check: compute PSNR between two u8 buffers.

compute_buffer_rms

Quick check: compute RMS error between two u8 buffers.