How can i find the number of rounds in sha512(-m 1700).

[penguinkeeper]

1) Yes, Hashcat has several bits of code that can generate sha512, that's one of them, which also does 80 rounds. If you wanted to reduce Hashcat to 79 rounds, it won't be amazingly easy but is possible but hasn't been tested officially

2) Correct, almost all of them are just "hashcat"
$ echo -n hashcat | sha512sum
82a9dda829eb7f8ffe9fbe49e45d47d2dad9664fbb7adf72492e3c81ebd3e29134d9bc12212bf83c6840f10e8246b9db54a4859b7ccd0123d86e5872c1e5082f -