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| """ | |
| The most atomic way to train and inference a GPT in pure, dependency-free Python. | |
| This file is the complete algorithm. | |
| Everything else is just efficiency. | |
| @karpathy | |
| """ | |
| import os # os.path.exists | |
| import math # math.log, math.exp |
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| #include <ctype.h> | |
| #include <openssl/sha.h> | |
| #define TARGET_PREFIX "20250327" | |
| #define MAX_WORDS 256 | |
| #define MAX_TEXT 2048 | |
| #define MAX_ATTEMPTS (1ULL << 32) // 2^32 attempts (~4.3B, enough for 8-char prefix) |

