Gpu Miner — Sha256

data[14] = nonce; data[15] = 0x80000000; // padding (bit 1, then zeros)

# Target: first 4 bytes must be <= 0x0000ffff (very easy) # For difficulty 1, target = 0x00000000ffff000000... easy_target = "0000ffff" + "00"*28 sha256 gpu miner

uint gid = get_global_id(0); uint nonce = start_nonce + gid; data[14] = nonce; data[15] = 0x80000000; // padding

def header_to_words(header): """Convert 80-byte header into 16 uint32 words (first 448 bits = 14 words) for kernel""" words = list(unpack("<16I", header.ljust(64, b'\x00'))) return words[:14] # first 14 words (nonce is word 14 in kernel) Main miner ------------------------------ class SHA256GPUMiner: def init (self, device_id=0): platforms = cl.get_platforms() if not platforms: raise RuntimeError("No OpenCL platforms found") data[14] = nonce

for (i = 0; i < 16; i++) W[i] = data[i];