Score wallets by unique characters

[opne]

I want to score the wallets generated by the number of unique characters (case-insensitive) in the public key.

I can generate this with simple CPU-limited python code but it's far too slow.

    acct, mnemonic = Account.create_with_mnemonic(num_words=24)
    if len(set(acct.address.lower()))<9:
        print(len(set(acct.address.lower())))
        print(acct.address)
        print(acct.key.hex())
        print(mnemonic)

Is this something that's possible with GPU? where can I start? I can't myself seem to find any resources that can help me write something like this up.

[MrSpike63]

You could replace the current score_zero_bytes function here with something like this, which counts the number of characters then flips it, since you seem to want to make it lower. Note that this tool doesn't support mnemonics.

__device__ int score_zero_bytes(Address a) {
    uint32_t mask = 0;

    #define count_unique_chars(x) \
        for (int i = 0; i < 8; i++) { \
            mask |= (1 << (x & 15)); \
            x >>= 4; \
        }

    count_unique_chars(a.a);
    count_unique_chars(a.b);
    count_unique_chars(a.c);
    count_unique_chars(a.d);
    count_unique_chars(a.e);
    #undef get_unique_chars

    return 16 - __popc(mask);
}