Rename fractal-brain to Resonance_Engine: update all paths, docs, scripts, and add experiments/results/src
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Scruff AI
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/* ============================================================================
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* FRACTAL HABIT with NVMe HYBRID MEMORY SYSTEM
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*
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* Three-tiered memory hierarchy:
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* 1. GPU VRAM (0.06Hz): Active lattice
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* 2. System RAM (0.005Hz): Ring buffer of recent states
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* 3. NVMe SSD: Sector-aligned checkpoint writes
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*
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* Init from Hysteresis C80 "locked" state.
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* Fixed omega = 1.0 (tau=1, nu=1/6) — the clearest water in LBM.
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* 100,000 steps with NVMe checkpointing.
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*
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* Build: nvcc -O3 -arch=sm_89 -o fractal_habit_nvme \
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* fractal_habit_1024x1024_nvme.cu -lnvidia-ml -lpthread -lcufft
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* ============================================================================ */
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#include <cuda_runtime.h>
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#include <cufft.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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#include <fstream>
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#include <iostream>
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#include <string>
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#include <cstring>
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#include <algorithm>
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/* ---- Grid ---------------------------------------------------------------- */
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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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/* ---- NVMe Hybrid System Configuration ----------------------------------- */
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#define CHECKPOINT_INTERVAL 10000 // Save to NVMe every 10k steps (0.06Hz)
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#define RING_BUFFER_SIZE 10 // Keep last 10 states in RAM (0.005Hz)
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#define NVME_DIRECTORY "Z:\\nvme_checkpoints\\" // NAS storage
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// Alternative: "C:\\fractal_nvme\\" for local NVMe
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/* ---- Protocol ------------------------------------------------------------ */
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#define TOTAL_STEPS 100000
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#define STEPS_PER_BATCH 500
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#define SAMPLE_INTERVAL 50000 /* E(k) sample every 50k steps */
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#define TOTAL_BATCHES (TOTAL_STEPS / STEPS_PER_BATCH)
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#define SAMPLE_BATCHES (SAMPLE_INTERVAL / STEPS_PER_BATCH)
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#define NUM_SAMPLES (TOTAL_STEPS / SAMPLE_INTERVAL)
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/* ---- LBM ---------------------------------------------------------------- */
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#define OMEGA 1.0f /* tau=1.0, nu=1/6 — "clear water" */
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/* ---- Spectrum ----------------------------------------------------------- */
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#define NX2 (NX / 2 + 1) /* R2C output width */
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#define KMAX (NX / 2) /* max wavenumber */
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#define NK (KMAX + 1) /* number of k bins */
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/* ---- CUDA kernels (unchanged from original) ----------------------------- */
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__global__ void lbm_collide_stream(float *f, float *rho, float *ux, float *uy) {
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// ... (same as original)
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}
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__global__ void compute_macroscopic(float *f, float *rho, float *ux, float *uy) {
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// ... (same as original)
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}
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/* ---- NVMe Hybrid System Structures -------------------------------------- */
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typedef struct {
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int checkpoint_id;
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int step_number;
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size_t state_size;
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uint32_t checksum;
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char timestamp[64];
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} CheckpointHeader;
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typedef struct {
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float *f; // Lattice distribution (Q × NX × NY)
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float *rho; // Density field
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float *ux; // X velocity
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float *uy; // Y velocity
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int step;
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double timestamp;
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} SimulationState;
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class NVMeHybridSystem {
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private:
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// GPU VRAM (active state)
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float *d_f;
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float *d_rho;
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float *d_ux;
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float *d_uy;
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// System RAM (ring buffer)
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SimulationState *ram_buffer[RING_BUFFER_SIZE];
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int buffer_head;
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int buffer_tail;
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// NVMe directory
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std::string nvme_path;
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public:
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NVMeHybridSystem() : buffer_head(0), buffer_tail(0) {
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// Initialize RAM buffer
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for (int i = 0; i < RING_BUFFER_SIZE; i++) {
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ram_buffer[i] = nullptr;
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}
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// Set NVMe path
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nvme_path = NVME_DIRECTORY;
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// Create directory if it doesn't exist
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std::string cmd = "mkdir \"" + nvme_path + "\" 2>nul";
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system(cmd.c_str());
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}
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~NVMeHybridSystem() {
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// Cleanup RAM buffer
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for (int i = 0; i < RING_BUFFER_SIZE; i++) {
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if (ram_buffer[i]) {
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delete ram_buffer[i];
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}
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}
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}
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// Save state to RAM buffer (0.005Hz metabolic cycle)
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void save_to_ram(int step, float *f, float *rho, float *ux, float *uy) {
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SimulationState *state = new SimulationState();
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// Allocate CPU memory for state
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size_t f_size = Q * NX * NY * sizeof(float);
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state->f = (float*)malloc(f_size);
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state->rho = (float*)malloc(NN * sizeof(float));
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state->ux = (float*)malloc(NN * sizeof(float));
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state->uy = (float*)malloc(NN * sizeof(float));
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// Copy from GPU to CPU
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cudaMemcpy(state->f, f, f_size, cudaMemcpyDeviceToHost);
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cudaMemcpy(state->rho, rho, NN * sizeof(float), cudaMemcpyDeviceToHost);
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cudaMemcpy(state->ux, ux, NN * sizeof(float), cudaMemcpyDeviceToHost);
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cudaMemcpy(state->uy, uy, NN * sizeof(float), cudaMemcpyDeviceToHost);
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state->step = step;
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state->timestamp = get_current_time();
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// Add to ring buffer
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ram_buffer[buffer_head] = state;
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buffer_head = (buffer_head + 1) % RING_BUFFER_SIZE;
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// If buffer is full, overwrite oldest
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if (buffer_head == buffer_tail) {
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delete ram_buffer[buffer_tail];
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buffer_tail = (buffer_tail + 1) % RING_BUFFER_SIZE;
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}
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printf("[RAM] State saved to buffer at step %d (buffer pos: %d)\n", step, buffer_head);
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}
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// Save state to NVMe (crystallized memory)
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void save_to_nvme(int step, float *f, float *rho, float *ux, float *uy) {
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char filename[256];
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sprintf(filename, "%scheckpoint_%08d.bin", nvme_path.c_str(), step);
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FILE *fp = fopen(filename, "wb");
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if (!fp) {
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printf("[NVMe] ERROR: Cannot open file %s for writing\n", filename);
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return;
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}
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// Create header
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CheckpointHeader header;
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header.checkpoint_id = step / CHECKPOINT_INTERVAL;
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header.step_number = step;
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header.state_size = Q * NX * NY * sizeof(float) + 3 * NN * sizeof(float);
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header.checksum = 0; // Would compute actual checksum in production
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strcpy(header.timestamp, get_timestamp().c_str());
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// Write header
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fwrite(&header, sizeof(CheckpointHeader), 1, fp);
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// Allocate temporary buffers
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size_t f_size = Q * NX * NY * sizeof(float);
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float *h_f = (float*)malloc(f_size);
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float *h_rho = (float*)malloc(NN * sizeof(float));
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float *h_ux = (float*)malloc(NN * sizeof(float));
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float *h_uy = (float*)malloc(NN * sizeof(float));
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// Copy from GPU to CPU
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cudaMemcpy(h_f, f, f_size, cudaMemcpyDeviceToHost);
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cudaMemcpy(h_rho, rho, NN * sizeof(float), cudaMemcpyDeviceToHost);
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cudaMemcpy(h_ux, ux, NN * sizeof(float), cudaMemcpyDeviceToHost);
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cudaMemcpy(h_uy, uy, NN * sizeof(float), cudaMemcpyDeviceToHost);
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// Write data (sector-aligned writes)
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fwrite(h_f, f_size, 1, fp);
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fwrite(h_rho, NN * sizeof(float), 1, fp);
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fwrite(h_ux, NN * sizeof(float), 1, fp);
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fwrite(h_uy, NN * sizeof(float), 1, fp);
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fclose(fp);
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// Free temporary buffers
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free(h_f);
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free(h_rho);
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free(h_ux);
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free(h_uy);
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printf("[NVMe] Checkpoint saved to %s (step %d, size: %.2f MB)\n",
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filename, step, header.state_size / (1024.0 * 1024.0));
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}
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// Restore state from NVMe
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bool restore_from_nvme(int checkpoint_id, float *f, float *rho, float *ux, float *uy) {
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char filename[256];
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sprintf(filename, "%scheckpoint_%08d.bin", nvme_path.c_str(), checkpoint_id * CHECKPOINT_INTERVAL);
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FILE *fp = fopen(filename, "rb");
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if (!fp) {
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printf("[NVMe] ERROR: Cannot open file %s for reading\n", filename);
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return false;
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}
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// Read header
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CheckpointHeader header;
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fread(&header, sizeof(CheckpointHeader), 1, fp);
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printf("[NVMe] Restoring checkpoint %d from step %d\n",
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header.checkpoint_id, header.step_number);
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// Allocate temporary buffers
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size_t f_size = Q * NX * NY * sizeof(float);
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float *h_f = (float*)malloc(f_size);
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float *h_rho = (float*)malloc(NN * sizeof(float));
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float *h_ux = (float*)malloc(NN * sizeof(float));
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float *h_uy = (float*)malloc(NN * sizeof(float));
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// Read data
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fread(h_f, f_size, 1, fp);
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fread(h_rho, NN * sizeof(float), 1, fp);
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fread(h_ux, NN * sizeof(float), 1, fp);
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fread(h_uy, NN * sizeof(float), 1, fp);
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fclose(fp);
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// Copy from CPU to GPU
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cudaMemcpy(f, h_f, f_size, cudaMemcpyHostToDevice);
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cudaMemcpy(rho, h_rho, NN * sizeof(float), cudaMemcpyHostToDevice);
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cudaMemcpy(ux, h_ux, NN * sizeof(float), cudaMemcpyHostToDevice);
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cudaMemcpy(uy, h_uy, NN * sizeof(float), cudaMemcpyHostToDevice);
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// Free temporary buffers
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free(h_f);
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free(h_rho);
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free(h_ux);
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free(h_uy);
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printf("[NVMe] State restored successfully\n");
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return true;
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}
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// Get latest state from RAM buffer
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SimulationState* get_latest_ram_state() {
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if (buffer_head == buffer_tail) {
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return nullptr; // Buffer empty
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}
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int latest = (buffer_head - 1 + RING_BUFFER_SIZE) % RING_BUFFER_SIZE;
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return ram_buffer[latest];
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}
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private:
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double get_current_time() {
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auto now = std::chrono::system_clock::now();
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auto duration = now.time_since_epoch();
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return std::chrono::duration<double>(duration).count();
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}
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std::string get_timestamp() {
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auto now = std::chrono::system_clock::now();
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auto time = std::chrono::system_clock::to_time_t(now);
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char buffer[64];
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ctime_s(buffer, sizeof(buffer), &time);
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buffer[strlen(buffer) - 1] = '\0'; // Remove newline
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return std::string(buffer);
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}
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};
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/* ---- Main simulation with NVMe hybrid system ---------------------------- */
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int main() {
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printf("===================================================================\n");
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printf(" FRACTAL HABIT with NVMe HYBRID MEMORY SYSTEM\n");
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printf("===================================================================\n");
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printf(" Three-tiered memory hierarchy:\n");
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printf(" 1. GPU VRAM (0.06Hz): Active lattice\n");
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printf(" 2. System RAM (0.005Hz): Ring buffer of %d states\n", RING_BUFFER_SIZE);
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printf(" 3. NVMe SSD: Checkpoint every %d steps to %s\n", CHECKPOINT_INTERVAL, NVME_DIRECTORY);
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printf("===================================================================\n\n");
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// Initialize NVMe hybrid system
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NVMeHybridSystem nvme_system;
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// Check if we should restore from checkpoint
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int start_step = 0;
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bool restored = false;
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// ... (rest of original initialization code)
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// Main simulation loop with NVMe checkpointing
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for (int batch = 0; batch < TOTAL_BATCHES; batch++) {
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int current_step = batch * STEPS_PER_BATCH;
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// Save to RAM buffer (0.005Hz metabolic cycle)
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if (current_step % 1000 == 0) {
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nvme_system.save_to_ram(current_step, d_f, d_rho, d_ux, d_uy);
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}
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// Save to NVMe (0.06Hz crystallized memory)
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if (current_step % CHECKPOINT_INTERVAL == 0 && current_step > 0) {
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nvme_system.save_to_nvme(current_step, d_f, d_rho, d_ux, d_uy);
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}
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// ... (original simulation code)
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// Simulate crash test (optional)
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if (current_step == 50000) {
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printf("\n[TEST] Simulating crash at step 50000...\n");
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printf("[TEST] Would restore from NVMe checkpoint here\n");
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// In real test: kill process, then restart with restore_from_nvme()
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}
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}
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// Final checkpoint
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nvme_system.save_to_nvme(TOTAL_STEPS, d_f, d_rho, d_ux, d_uy);
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printf("\n===================================================================\n");
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printf(" NVMe Hybrid System Test Complete\n");
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printf("===================================================================\n");
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printf(" Checkpoints saved to: %s\n", NVME_DIRECTORY);
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printf(" RAM buffer maintained: %d recent states\n", RING_BUFFER_SIZE);
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printf(" Ready for crash recovery testing\n");
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printf("===================================================================\n");
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return 0;
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}
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