Latest from the blog
Training on a rented GPU: four and a half times cheaper
Spot CPU machines on EC2 were getting expensive. Moving the fighter's physics onto a GPU, tuning the code for it and trying nine graphics cards cut the cost of training the stance by about 4.5 times.
Blocking: reading a punch you see a tenth of a second late
Twenty runs taught the fighter four Muay Thai blocks, then to watch an opponent and pick the right one. Four times it found a giveaway in the opponent instead of reading the punch.
Footwork: walking to a spot in a Muay Thai stance
Twenty-two runs taught the fighter to step forward, back, sideways and diagonally, and to pivot, without forgetting its punches. Then every rule about how the walk should look made it walk worse.
Faster punches: from trained amateur towards professional
The five punches landed, but at an ordinary person's pace. Seven runs, a policy that sets its own timing, and a stronger elbow brought every punch to the target sooner, and finally landed the cross.
Five punches: the cross, the hooks and the uppercut
Adding four punches to the jab, then air, pads and a heavy bag: ten training runs, a coach's corrections, and a fighter that now throws a near-human combination.
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