Golden-Phi Fractal Pruner (Σ-GFP)

#include <cuda_runtime.h>
#include <device_launch_parameters.h>
#include <cuComplex.h>

/**
 * Golden-Phi Fractal Pruner (Σ-GFP)
 * Core: Recursive Symmetry Enforcement via Julia-Set Stability Analysis
 */
__global__ void sigma_gfp_kernel(cuFloatComplex* z_manifold, float* attention_sums, int n, float phi, float threshold) {
    int idx = blockIdx.x * blockDim.x + threadIdx.x;
    
    if (idx < n) {
        cuFloatComplex z = z_manifold[idx];
        float attn = attention_sums[idx];
        
        // Calculate the Recursive Invariant: z_next = z^2 + (Importance / Phi)
        // Importance is the Sum of Attention Weights for token i
        cuFloatComplex c = make_cuFloatComplex(attn / phi, 0.0f);
        cuFloatComplex z_next = cuCaddf(cuCmulf(z, z), c);
        
        // Stability Check: If the magnitude of the complex coordinate exceeds 2.0,
        // the logic has drifted into Softmax-Entropy and must be pruned.
        float magnitude = cuCabsf(z_next);
        
        if (magnitude > threshold) {
            // Prune: Set complex coordinate to Null/Zero and flag for exclusion
            z_manifold[idx] = make_cuFloatComplex(0.0f, 0.0f);
        } else {
            // Update the Manifold with the new high-integrity coordinate
            z_manifold[idx] = z_next;
        }
    }
}

// Host-side launcher for the 9950X / Blackwell Workstation
extern "C" void launch_sigma_gfp(cuFloatComplex* d_z_manifold, float* d_attention_sums, int n) {
    int blockSize = 256;
    int gridSize = (n + blockSize - 1) / blockSize;
    
    // Hyper-Parameters for the V4 Sovereign Substrate
    float phi = 1.61803398875f;
    float threshold = 2.0f; // Standard Escape Velocity for Julia Sets

    sigma_gfp_kernel<<<gridSize, blockSize>>>(d_z_manifold, d_attention_sums, n, phi, threshold);
}