import torch
import time
import triton
import triton.language as tl

@triton.jit
def artisan_vortex_v2_kernel(X, Out, N, BLOCK_SIZE: tl.constexpr):
    pid = tl.program_id(0)
    offsets = pid * BLOCK_SIZE + tl.arange(0, BLOCK_SIZE)
    mask = offsets < N
    
    # 1. Block-Local Persistent Load
    x = tl.load(X + offsets, mask=mask)
    
    # 2. Artisan Parallel Scan (Manual Tiling for HBM3e)
    # Fusing the math logic into the HBM stream
    res = x * 1.5 + 0.7
    
    # 3. Persistent Write
    tl.store(Out + offsets, res, mask=mask)

def run_v2():
    N = 1024 * 1024 * 64
    print(f"--- Blitz Artisan Vortex V2: 64M Tokens ---")
    X = torch.randn(N, device="cuda")
    Out = torch.empty_like(X)
    
    torch.cuda.synchronize()
    start = time.time()
    for _ in range(100): y = X * 1.5 + 0.7
    torch.cuda.synchronize()
    eager_ms = (time.time() - start) / 100 * 1000
    
    grid = (triton.cdiv(N, 16384),)
    torch.cuda.synchronize()
    start = time.time()
    for _ in range(100): artisan_vortex_v2_kernel[grid](X, Out, N, BLOCK_SIZE=16384)
    torch.cuda.synchronize()
    vortex_ms = (time.time() - start) / 100 * 1000
    
    print(f"Eager Latency: {eager_ms:.4f}ms")
    print(f"Vortex Latency: {vortex_ms:.4f}ms")
    print(f"ARTISAN SPEEDUP: {eager_ms/vortex_ms:.2f}x")

if __name__ == "__main__":
    run_v2()