Rename fractal-brain to Resonance_Engine: update all paths, docs, scripts, and add experiments/results/src
This commit is contained in:
Scruff AI
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/* ============================================================================
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* PLASTICITY TRACKER - Nodal Growth Metrics
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* Fractal Brain Cheat Sheet: Nodal Growth = Plasticity
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* = Grid's ability to reshape itself to find a "cooler" path
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* ============================================================================ */
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#include <cuda_runtime.h>
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#include <nvml.h>
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#include <cstdio>
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#include <cstdlib>
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#include <cstdint>
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#include <cmath>
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#include <chrono>
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#include <vector>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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#define NX 1024
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#define NY 1024
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#define NN (NX * NY)
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#define Q 9
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#define BLOCK 256
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#define GBLK(n) (((n) + BLOCK - 1) / BLOCK)
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#define TOTAL_STEPS 300000 // ~1 minute
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#define STEPS_PER_BATCH 500
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#define SAMPLE_INTERVAL 10000
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#define OMEGA 1.0f
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/* ---- Plasticity Parameters --------------------------------------------- */
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#define PLASTICITY_RATE 0.001f // How fast connections adapt
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#define MIN_STRENGTH 0.1f // Minimum connection strength
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#define MAX_STRENGTH 5.0f // Maximum connection strength
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#define ADAPTATION_WINDOW 1000 // Steps for adaptation measurement
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/* ---- Connection Structure ---------------------------------------------- */
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typedef struct {
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float strength[Q]; // Connection strength for each direction
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float usage[Q]; // How much each direction is used
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float efficiency; // Current flow efficiency (0-1)
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float last_adaptation; // When last adapted
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float plasticity; // Current plasticity level (0-1)
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} NodeConnections;
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NodeConnections* connections = nullptr; // Will allocate on host
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/* ---- Plasticity Metrics ------------------------------------------------ */
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float total_plasticity = 0.0f; // Sum of all node plasticity
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float avg_adaptation_rate = 0.0f; // Average adaptation rate
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float grid_efficiency = 0.0f; // Overall grid efficiency
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float structural_change = 0.0f; // How much grid has changed
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/* ---- D2Q9 --------------------------------------------------------------- */
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__constant__ int d_ex[Q] = { 0, 1, 0,-1, 0, 1,-1,-1, 1 };
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__constant__ int d_ey[Q] = { 0, 0, 1, 0,-1, 1, 1,-1,-1 };
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__constant__ float d_w[Q] = { 4.f/9, 1.f/9, 1.f/9, 1.f/9, 1.f/9,
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1.f/36,1.f/36,1.f/36,1.f/36 };
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/* ======================================================================== */
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/* K E R N E L S */
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/* ======================================================================== */
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/* ---- LBM collide & stream with plasticity ----------------------------- */
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__global__ void lbm_collide_stream_plastic(const float* __restrict__ f_src,
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float* __restrict__ f_dst,
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float* __restrict__ rho,
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float* __restrict__ ux,
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float* __restrict__ uy,
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float* __restrict__ strength,
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float* __restrict__ usage,
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float omega, int nx, int ny) {
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const int idx = blockIdx.x * blockDim.x + threadIdx.x;
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const int N = nx * ny;
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if (idx >= N) return;
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const int x = idx % nx, y = idx / nx;
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float fl[Q];
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float total_strength = 0.0f;
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// Apply connection strengths
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for (int i = 0; i < Q; i++) {
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int sx = (x - d_ex[i] + nx) % nx;
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int sy = (y - d_ey[i] + ny) % ny;
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float s = strength[i * N + sy * nx + sx];
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fl[i] = f_src[i * N + sy * nx + sx] * s;
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total_strength += s;
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}
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// Normalize by total strength
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if (total_strength > 0.0f) {
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float inv = 1.0f / total_strength;
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for (int i = 0; i < Q; i++) {
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fl[i] *= inv;
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}
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}
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float rho_val = 0.f, ux_val = 0.f, uy_val = 0.f;
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for (int i = 0; i < Q; i++) {
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rho_val += fl[i];
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ux_val += (float)d_ex[i] * fl[i];
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uy_val += (float)d_ey[i] * fl[i];
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}
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float inv = 1.f / fmaxf(rho_val, 1e-10f);
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ux_val *= inv; uy_val *= inv;
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rho[idx] = rho_val; ux[idx] = ux_val; uy[idx] = uy_val;
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const float u2 = ux_val * ux_val + uy_val * uy_val;
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for (int i = 0; i < Q; i++) {
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float eu = (float)d_ex[i] * ux_val + (float)d_ey[i] * uy_val;
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float feq = d_w[i] * rho_val * (1.f + 3.f*eu + 4.5f*eu*eu - 1.5f*u2);
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f_dst[i * N + idx] = fl[i] - omega * (fl[i] - feq);
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// Track usage (how much this direction is used)
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float usage_val = fabsf(fl[i] - feq);
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atomicAdd(&usage[i * N + idx], usage_val);
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}
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}
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/* ---- Update connection strengths (plasticity) ------------------------- */
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__global__ void update_plasticity(float* strength, float* usage,
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float plasticity_rate, int nx, int ny) {
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const int idx = blockIdx.x * blockDim.x + threadIdx.x;
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const int N = nx * ny;
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if (idx >= N) return;
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// Find most used direction
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float max_usage = 0.0f;
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int best_dir = 0;
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float total_usage = 0.0f;
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for (int i = 0; i < Q; i++) {
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float u = usage[i * N + idx];
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total_usage += u;
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if (u > max_usage) {
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max_usage = u;
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best_dir = i;
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}
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}
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// Strengthen most used direction, weaken others
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if (total_usage > 0.0f) {
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for (int i = 0; i < Q; i++) {
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float current = strength[i * N + idx];
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if (i == best_dir) {
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// Strengthen
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strength[i * N + idx] = fminf(current + plasticity_rate, MAX_STRENGTH);
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} else {
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// Weaken
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strength[i * N + idx] = fmaxf(current - plasticity_rate * 0.1f, MIN_STRENGTH);
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}
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}
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}
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// Reset usage for next measurement window
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for (int i = 0; i < Q; i++) {
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usage[i * N + idx] = 0.0f;
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}
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}
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/* ======================================================================== */
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/* P L A S T I C I T Y M E T R I C S */
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/* ======================================================================== */
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void calculate_plasticity_metrics(float* h_strength, float* initial_strength,
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uint64_t current_step, int adaptation_cycles) {
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if (adaptation_cycles == 0) return;
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float total_change = 0.0f;
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float total_efficiency = 0.0f;
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int adaptive_nodes = 0;
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for (int idx = 0; idx < NN; idx++) {
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float node_change = 0.0f;
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float node_efficiency = 0.0f;
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float max_strength = 0.0f;
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float strength_sum = 0.0f;
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for (int i = 0; i < Q; i++) {
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float current = h_strength[i * NN + idx];
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float initial = initial_strength[i * NN + idx];
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float change = fabsf(current - initial);
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node_change += change;
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node_efficiency += current * d_w[i]; // Weight by lattice weight
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strength_sum += current;
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if (current > max_strength) max_strength = current;
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}
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total_change += node_change / Q; // Average per direction
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total_efficiency += (max_strength / strength_sum); // Directionality efficiency
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// Count adaptive nodes (significant change)
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if (node_change / Q > 0.1f) {
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adaptive_nodes++;
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}
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}
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// Update global metrics
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structural_change = total_change / NN;
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grid_efficiency = total_efficiency / NN;
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avg_adaptation_rate = structural_change / adaptation_cycles;
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total_plasticity = (float)adaptive_nodes / NN; // Percentage of adaptive nodes
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// Update node connections on host
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for (int idx = 0; idx < NN; idx++) {
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connections[idx].plasticity = 0.0f;
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connections[idx].efficiency = 0.0f;
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for (int i = 0; i < Q; i++) {
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connections[idx].strength[i] = h_strength[i * NN + idx];
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connections[idx].efficiency += h_strength[i * NN + idx] * d_w[i];
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}
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// Calculate node plasticity (how much it has changed recently)
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float node_change = 0.0f;
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for (int i = 0; i < Q; i++) {
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float initial = initial_strength[i * NN + idx];
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float current = h_strength[i * NN + idx];
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node_change += fabsf(current - initial);
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}
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connections[idx].plasticity = node_change / Q;
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connections[idx].last_adaptation = node_change;
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}
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}
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/* ---- Save Plasticity Metrics ------------------------------------------ */
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void save_plasticity_metrics(uint64_t current_step, int adaptation_cycles) {
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// Summary CSV
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FILE* csv = fopen("plasticity_summary.csv", "w");
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if (!csv) return;
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fprintf(csv, "step,structural_change,grid_efficiency,adaptation_rate,total_plasticity,adaptive_nodes,adaptation_cycles\n");
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fprintf(csv, "%llu,%.6f,%.6f,%.6f,%.6f,%d,%d\n",
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current_step, structural_change, grid_efficiency,
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avg_adaptation_rate, total_plasticity,
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(int)(total_plasticity * NN), adaptation_cycles);
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fclose(csv);
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// Detailed node metrics (sample every 100th node)
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FILE* detail = fopen("plasticity_nodes.csv", "w");
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if (!detail) return;
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fprintf(detail, "node_id,x,y,plasticity,efficiency,avg_strength,max_strength,strength_variance\n");
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for (int idx = 0; idx < NN; idx += 100) { // Sample 1% of nodes
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int x = idx % NX;
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int y = idx / NX;
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float avg_strength = 0.0f;
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float max_strength = 0.0f;
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float variance = 0.0f;
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for (int i = 0; i < Q; i++) {
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float s = connections[idx].strength[i];
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avg_strength += s;
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if (s > max_strength) max_strength = s;
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}
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avg_strength /= Q;
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for (int i = 0; i < Q; i++) {
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float diff = connections[idx].strength[i] - avg_strength;
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variance += diff * diff;
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}
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variance /= Q;
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fprintf(detail, "%d,%d,%d,%.6f,%.6f,%.6f,%.6f,%.6f\n",
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idx, x, y, connections[idx].plasticity,
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connections[idx].efficiency, avg_strength, max_strength, variance);
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}
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fclose(detail);
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// JSON summary
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FILE* json = fopen("plasticity_metrics.json", "w");
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if (!json) return;
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fprintf(json, "{\n");
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fprintf(json, " \"current_step\": %llu,\n", current_step);
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fprintf(json, " \"structural_change\": %.6f,\n", structural_change);
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fprintf(json, " \"grid_efficiency\": %.6f,\n", grid_efficiency);
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fprintf(json, " \"adaptation_rate\": %.6f,\n", avg_adaptation_rate);
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fprintf(json, " \"total_plasticity\": %.6f,\n", total_plasticity);
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fprintf(json, " \"adaptive_nodes\": %d,\n", (int)(total_plasticity * NN));
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fprintf(json, " \"adaptation_cycles\": %d,\n", adaptation_cycles);
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fprintf(json, " \"plasticity_rate\": %.6f\n", PLASTICITY_RATE);
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fprintf(json, "}\n");
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fclose(json);
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}
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/* ======================================================================== */
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/* M A I N T E S T */
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/* ======================================================================== */
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int main() {
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printf("=======================================================================\n");
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printf(" PLASTICITY TRACKER - Nodal Growth Metrics\n");
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printf(" Fractal Brain: Plasticity = Grid reshaping to find cooler path\n");
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printf("=======================================================================\n\n");
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printf("PLASTICITY DEFINITION:\n");
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printf(" Nodal Growth = Grid's ability to reshape itself\n");
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printf(" Goal: Find \"cooler\" paths (lower resistance, more efficient)\n");
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printf(" Rate: %.6f per adaptation cycle\n\n", PLASTICITY_RATE);
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// CUDA setup
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cudaDeviceProp prop;
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cudaGetDeviceProperties(&prop, 0);
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printf("[CUDA] %s SM %d.%d SMs: %d\n",
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prop.name, prop.major, prop.minor, prop.multiProcessorCount);
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// NVML power monitoring
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nvmlInit();
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nvmlDevice_t nvml_dev;
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nvmlDeviceGetHandleByIndex(0, &nvml_dev);
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unsigned int power_mW;
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nvmlDeviceGetPowerUsage(nvml_dev, &power_mW);
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printf("[NVML] Idle power: %.1f W\n", power_mW / 1000.0f);
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// Allocate memory
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float *f0, *f1, *rho, *ux, *uy;
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float *strength, *usage;
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float *h_strength, *initial_strength;
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cudaMalloc(&f0, Q * NN * sizeof(float));
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cudaMalloc(&f1, Q * NN * sizeof(float));
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cudaMalloc(&rho, NN * sizeof(float));
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cudaMalloc(&ux, NN * sizeof(float));
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cudaMalloc(&uy, NN * sizeof(float));
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cudaMalloc(&strength, Q * NN * sizeof(float));
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cudaMalloc(&usage, Q * NN * sizeof(float));
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h_strength = (float*)malloc(Q * NN * sizeof(float));
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initial_strength = (float*)malloc(Q * NN * sizeof(float));
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// Allocate host connections
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connections = (NodeConnections*)malloc(NN * sizeof(NodeConnections));
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// Initialize distribution
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float* h_f0 = (float*)malloc(Q * NN * sizeof(float));
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for (int i = 0; i < Q * NN; i++) {
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h_f0[i] = 1.0f + 0.01f * (rand() / (float)RAND_MAX - 0.5f);
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}
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cudaMemcpy(f0, h_f0, Q * NN * sizeof(float), cudaMemcpyHostToDevice);
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free(h_f0);
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// Initialize connection strengths (uniform)
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for (int i = 0; i < Q * NN; i++) {
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h_strength[i] = 1.0f; // Start with uniform strength
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initial_strength[i] = 1.0f;
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}
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cudaMemcpy(strength, h_strength, Q * NN * sizeof(float), cudaMemcpyHostToDevice);
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cudaMemset(usage, 0, Q * NN * sizeof(float));
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// Initialize node connections
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for (int idx = 0; idx < NN; idx++) {
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for (int i = 0; i < Q; i++) {
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connections[idx].strength[i] = 1.0f;
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connections[idx].usage[i] = 0.0f;
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}
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connections[idx].efficiency = 1.0f;
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connections[idx].last_adaptation = 0.0f;
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connections[idx].plasticity = 0.0f;
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}
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// Prepare telemetry
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FILE* telemetry = fopen("plasticity_telemetry.csv", "w");
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fprintf(telemetry, "step,power_w,steps_per_sec,structural_change,grid_efficiency,adaptation_rate,total_plasticity\n");
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auto t0 = std::chrono::steady_clock::now();
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uint64_t total_steps = 0;
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int cur = 0;
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int adaptation_cycles = 0;
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printf("\n[EXPERIMENT] Tracking plasticity (nodal growth)...\n");
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printf(" Steps | Power | Steps/sec | Structure | Efficiency | Plasticity\n");
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printf(" --------|-------|-----------|-----------|------------|------------\n");
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int batches = TOTAL_STEPS / STEPS_PER_BATCH;
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for (int batch = 0; batch < batches; batch++) {
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// Run LBM steps with plasticity
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for (int s = 0; s < STEPS_PER_BATCH; s++) {
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lbm_collide_stream_plastic<<<GBLK(NN), BLOCK>>>(
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(cur == 0) ? f0 : f1,
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(cur == 0) ? f1 : f0,
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rho, ux, uy, strength, usage, OMEGA, NX, NY);
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cudaDeviceSynchronize();
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cur = 1 - cur;
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}
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total_steps += STEPS_PER_BATCH;
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// Update plasticity every ADAPTATION_WINDOW steps
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if (total_steps % ADAPTATION_WINDOW == 0) {
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update_plasticity<<<GBLK(NN), BLOCK>>>(strength, usage, PLASTICITY_RATE, NX, NY);
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cudaDeviceSynchronize();
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adaptation_cycles++;
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// Copy strengths back to host for metrics
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cudaMemcpy(h_strength, strength, Q * NN * sizeof(float), cudaMemcpyDeviceToHost);
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calculate_plasticity_metrics(h_strength, initial_strength, total_steps, adaptation_cycles);
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}
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// Report every SAMPLE_INTERVAL steps
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if (total_steps % SAMPLE_INTERVAL == 0) {
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nvmlDeviceGetPowerUsage(nvml_dev, &power_mW);
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float power_W = power_mW / 1000.0f;
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auto t_now = std::chrono::steady_clock::now();
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double elapsed = std::chrono::duration<double>(t_now - t0).count();
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float steps_per_sec = total_steps / elapsed;
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fprintf(telemetry, "%llu,%.1f,%.0f,%.6f,%.6f,%.6f,%.6f\n",
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total_steps, power_W, steps_per_sec, structural_change,
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grid_efficiency, avg_adaptation_rate, total_plasticity);
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printf(" %7llu | %5.0f | %9.0f | %9.6f | %10.6f | %10.6f\n",
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total_steps, power_W, steps_per_sec, structural_change,
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grid_efficiency, total_plasticity);
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// Save detailed metrics every 50k steps
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if (total_steps % 50000 == 0) {
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save_plasticity_metrics(total_steps, adaptation_cycles);
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}
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}
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// Check time limit (1 minute)
|
||||
auto t_now = std::chrono::steady_clock::now();
|
||||
double elapsed = std::chrono::duration<double>(t_now - t0).count();
|
||||
if (elapsed > 60.0) {
|
||||
printf("\n[TIME] 1 minute reached\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
auto t_end = std::chrono::steady_clock::now();
|
||||
double runtime = std::chrono::duration<double>(t_end - t0).count();
|
||||
|
||||
// Final results
|
||||
printf("\n=======================================================================\n");
|
||||
printf(" PLASTICITY TRACKER - FINAL METRICS\n");
|
||||
printf("=======================================================================\n");
|
||||
|
||||
printf("\nEXPERIMENT SUMMARY:\n");
|
||||
printf(" Total steps: %llu\n", total_steps);
|
||||
printf(" Runtime: %.1f seconds (%.2f minutes)\n", runtime, runtime / 60.0);
|
||||
printf(" Steps/sec: %.0f\n", total_steps / runtime);
|
||||
printf(" Adaptation cycles: %d\n", adaptation_cycles);
|
||||
|
||||
nvmlDeviceGetPowerUsage(nvml_dev, &power_mW);
|
||||
printf(" Final power: %.1f W\n", power_mW / 1000.0f);
|
||||
|
||||
printf("\nPLASTICITY METRICS:\n");
|
||||
printf(" Structural change: %.6f (0-1 scale)\n", structural_change);
|
||||
printf(" Grid efficiency: %.6f (0-1 scale)\n", grid_efficiency);
|
||||
printf(" Adaptation rate: %.6f change/cycle\n", avg_adaptation_rate);
|
||||
printf(" Total plasticity: %.6f (%% of adaptive nodes)\n", total_plasticity);
|
||||
printf(" Adaptive nodes: %d / %d\n", (int)(total_plasticity * NN), NN);
|
||||
|
||||
printf("\nPLASTICITY CLASSIFICATION:\n");
|
||||
if (structural_change > 0.5f) {
|
||||
printf(" ✅ HIGH PLASTICITY: Grid significantly reshaped\n");
|
||||
printf(" Strong nodal growth and adaptation\n");
|
||||
} else if (structural_change > 0.1f) {
|
||||
printf(" ⚠️ MODERATE PLASTICITY: Some grid adaptation\n");
|
||||
printf(" Moderate nodal growth\n");
|
||||
} else {
|
||||
printf(" ⚠️ LOW PLASTICITY: Limited grid adaptation\n");
|
||||
printf(" May need higher plasticity rate or longer runtime\n");
|
||||
}
|
||||
|
||||
if (grid_efficiency > 0.7f) {
|
||||
printf(" ✅ HIGH EFFICIENCY: Grid found \"cooler\" paths\n");
|
||||
printf(" Effective adaptation to flow patterns\n");
|
||||
} else if (grid_efficiency > 0.4f) {
|
||||
printf(" ⚠️ MODERATE EFFICIENCY: Some path optimization\n");
|
||||
} else {
|
||||
printf(" ⚠️ LOW EFFICIENCY: Limited path optimization\n");
|
||||
printf(" Grid not effectively finding cooler paths\n");
|
||||
}
|
||||
|
||||
// Save final metrics
|
||||
save_plasticity_metrics(total_steps, adaptation_cycles);
|
||||
|
||||
printf("\nOUTPUT FILES:\n");
|
||||
printf(" plasticity_telemetry.csv - Time-series telemetry\n");
|
||||
printf(" plasticity_summary.csv - Summary metrics\n");
|
||||
printf(" plasticity_nodes.csv - Detailed node metrics (1%% sample)\n");
|
||||
printf(" plasticity_metrics.json - JSON summary\n");
|
||||
|
||||
printf("\nANALYSIS:\n");
|
||||
printf(" Plasticity (Nodal Growth) measures:\n");
|
||||
printf(" 1. Structural change: How much grid reshapes\n");
|
||||
printf(" 2. Grid efficiency: How well it finds \"cooler\" paths\n");
|
||||
printf(" 3. Adaptation rate: Speed of change\n");
|
||||
printf(" 4. Adaptive nodes: Percentage of nodes that change\n");
|
||||
|
||||
// Cleanup
|
||||
fclose(telemetry);
|
||||
cudaFree(f0); cudaFree(f1);
|
||||
cudaFree(rho); cudaFree(ux); cudaFree(uy);
|
||||
cudaFree(strength); cudaFree(usage);
|
||||
free(h_strength); free(initial_strength);
|
||||
free(connections);
|
||||
nvmlShutdown();
|
||||
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user