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I've been working on setting up the GPU acceleration all night and finally got it working. Now I'm at approximately 10,000 passwords per minute which is already alot better.
It says that if i optimize the --global-ws and --local-ws parameters that it's possible to get a 10X improvement, so God willing I can get it upwards of 100,000 passwords a minute.
Yeah, finding optimal value for your GPU is important. BTW the author also state slow CPU could be bottleneck, where BTCRecover can't fully utilize GPU. See
https://github.com/3rdIteration/btcrecover/issues/184#issuecomment-843130049.
Also, this can run multiple servers / computers / GPUs in parallel, so I'm gonna start working on that. Then I can scale up much more.
Server? If you mean renting device you don't have full access, make sure you can trust them (both company and it's worker) not to steal your data and Bitcoin.