[hashcash] Re: Speed problem with 1.03 on Mac G4
- From: hal@xxxxxxxxxx ("Hal Finney")
- To: hashcash@xxxxxxxxxxxxx
- Date: Sun, 22 Aug 2004 10:28:04 -0700 (PDT)
I wrote:
> PR4 is slower than PR3. The switches I am building with on PR4
> are -O3 -funroll-lops -march=i386 -mcpu=i486. Time to generate a
> 24 bit collision is estimated as 14 seconds, which is about right.
I have to correct this. On further testing I think I just had a run of
exceptionally bad luck in generating my first half dozen or so tokens
on PR4. Later tests often generated tokens in 0-3 seconds which averaged
out to be about the same or even better than PR3. So please ignore the
part about PR4 being slower or choosing the wrong minter.
PR4 does seem to over-estimate the amount of time it will take, and that
was probably biasing my observations to expect it to take longer than PR3.
Hal
Other related posts:
