Topic: GekkoScience has a new stickminer that does 300+GH - page 16. (Read 22193 times)

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1. I believe that the ticket mask is no need at all. does it filt nonce output within BM1397 chip as its internal function? or just the code in cgminer do filter? It makes code more complex and cost CPU time, too.  Only threshold setup within BM1397 chip, may help to reduce number of ouput nonce with more quality nonces output. One block headers only produce 0 to 3 nonces in average running.
 
2. I observed total nonces come from asic chips and total nonces pass 1st test, and total nonces fail to pass 1st test. I found that a lot of nonces which are from asic chips fail to pass 1st test in test_nonce() function under ASIC boost mode. Which should not happen, I believe. And this indicate ASIC boost mode can output bad nonces (or less quality nonce).
 
3. sha256 algorithm is very sensitive to input message. So those midstates will produce error and cause bad nonces output for sure. I believe, turning off some midstate will help the quality of output nonces, which will increase of expectation of hitting bitcoin.

4. " 1 in 2^32 hashes will, on average, start with 32 zero bits.",  a lot of miners have done this amount 2^32 of hashing, but, they won't get a 32 zero hash value. This saying is aganist my observation in years. There is always some area (sub-space of sha256 space) hide more quality nonces which can produce better (or smaller) hash values. I called these nonces as quality nonces. I often observed some miners can resolved a bitcoin under 30 seconds.  I think they may have few or some universal or nearest universal nonces. Otherwise, it is against the your logic (or theory). In fact, small home miners need few universal nonces to beat big miners, I believe.

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4. Increasing freq won't increase output of found nonces, and won't increase quality nonces (which has higher diff), this is the key to success in mining. We want the nonce which can reach the target or higher diff.  Now, too many nonces with below 10k difficulty.
5. Higher freq will produce more failed nonces which can not pass 1st test under asic boost mode. ASIC boost mode in BM1397 chip may limit the quality of nonces.  I turn off asic boost, and got more quality nonce or more higher diff nonces. I set freq at 350MHZ and got 320 GH/s. No nned higher freq.
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@jack1cryptotalk007
to adjust the screw the stick must be pulled out or can the whole thing be done during mining?

for simple run,  try don't want --gekko-mine2  --gekko-tune2 60,  to see how it is going? 
or try to use 525 or 500.

if 1622 stick alway got lower Gh/s,  try to adjust that screw. If still fail, which mean that stick is not good. Quality problem.

Another way, edit code, increse waiting time in read usb command,  use 100 ms instead of 10 ms. This is often cause usb read not work correctly.

okay, i have now started my 3 gekko compac f miner with the following command:


i am now curious how long all 3 miners will run at this mhz


edit: did not take long and the first miner was disabled

the problem i have is that i can't get all 3 comapc miners to run at the same number of mhz at the same time
once only 2 miners get to the 570mhz and when i restart cgminer only the third one gets to the 570mhz and the others are somehow at 300-400mhz and then restart at some point to 200mhz
so from this point of view, all 3 miners are set correctly, because otherwise they wouldn't reach the 570mhz - but what is the problem, that not all 3 miners reach 570mhz or 550mhz at the same time?

kk
will continue to try my luck until i have also bring my last ferarri to 570mhz

No it can't fall out, it's a fixed rotating knob. If you spin it too far, it just starts back over at the beginning. It's basically a tiny volume knob but without stop-blocks at each end.

okay, thanks for the tip.
how far can i turn the small screw - can it fall out at some point?

A little goes a long way

If a stick's running slowly, adjust the voltage up a little bit by turning the pot screw in the bottom corner clockwise just a little bit.

The little screw/knob in the bottom corner, turn it clockwise just a little. Factory spec is 1.48V but the full range is about 1.40 to 1.60 volts so there's plenty of headroom. A little goes a long way - we saw a measurable increase in burn-in test performance from changing the default setpoint of 1.44 to 1.48
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Rule of thumb with cooling is literally a rule of thumb. If it hurts to put your thumb on the heatsink, you need more cooling.

The controller is whatever USB host computer thing you're running on. That shouldn't be a problem with only three sticks; a basic Pi can handle more than that load.