Type 1 deterministic wallet
A type 1 deterministic wallet is a simple method of generating addresses from a known starting string, as such it does not allow advanced features such as a Master Public Key. To generate a private key take SHA256(string + n), where n is an ASCII-coded number that starts from 1 and increments as additional keys are needed.

This type of wallet can be created by Casascius Bitcoin Address Utility.

I want the above functionality with a simple twist since gpu will generate addresses in millions compressed and uncompressed form similar to vanity generators save only the addresses
that have the matching pattern along with the private key that generated that address and do that indefinately gpu either cuda or opencl i will appreciate if you make such program for free if not we can discuss this if you want you can contact me on telegram its same as my username since i am not that active.