BITMAIN Antminer S1 support and OverClocking thread

[MrTeal]

I haven't managed to control the fan yet, but for those who don't care about noise and want better cooling you can just remove the blue wire from the fan connector (or cut it, if you're lazy). Just use a small precision flat blade screwdriver and push in the little locking tab at the back of the 4 pin fan connector. In the absence of a PWM signal the fan just spins up to full speed, which the Antminer is reporting as 3900RPM. Doing that dropped my temps from 47 to 35 at 400MHz.

[1713920187]

1713920187

[1713920187]

1713920187

[ineedit]

I know it's a dumb question....but how exactly does one calculate the HW error rate? No matter what values from the posted screen-shots I use, I never get the correspond HW error rate.
 
...

The formula is HW / (HW + DiffA + Diffr + DiffS) = %

[gsmline]

when I got it today antminer as a heap?

[ineedit]

I knew I read this somewhere but I could not remember where but I have found it whilst looking for clues on tuning the Ant's

Future: We are designing a type of new control board based on ARM A8. When it is ready, the chain number can be up to 16, and the chip number can be up to 256 per chain.

https://github.com/AntMiner/AntGen1/blob/master/PCB/README.md

[ineedit]

Here I come with my conclusion.

According to 'AntMiner U1 Manual' (I assumed that it's also for AntMiner S1 too)

...
To play safe, 400 MHz is the best one (for me for now), with relatively low HW error and stated in the manual+FAQ. =)

Are you taking into account the calculation that is made in /etc/init.d/cgminer which occurs between the setting in the asic-freq file and the inclusion of the values used in the --bitmain-options which would be similar to those in the AntMiner U1 Manual. The calculation is

    #TO=$(( 12690 / $_cf ))
    #_cf = 25 *((($_regv >> 7)&0x7f) + 1)/(((($_regv >> 2) & 0x1f) + 1) * (0x1 << (&_regv & 0x3)))

Where

    _regv freq_value
    _cf  chip_freq
    _TO  timeout

and included in the cgminer command string

 --bitmain-options 115200:32:8:$_T0:$_cf:$_regv

[FortuneNVirtue]

In short, 'AntMiner U1' in AntMiner U1 user guide and 'AntMiner S1' in AntMiner FAQ
have the same frequency and the frequency hex such as

'4D81' for 350MHz, '4F81' for 400MHz, '5081' for 425MHz, and so on.

https://github.com/AntMiner/AntGen1/tree/master/manual

Focusing for the Frequency and Frequecy HEX, they share the same values. (I think the calculation/equation should be the same)
So, if I find some specific MHz for U1, I assume that I should be able to apply it to S1,too.

[ineedit]

In short, 'AntMiner U1' in AntMiner U1 user guide and 'AntMiner S1' in AntMiner FAQ
have the same frequency and the frequency hex such as

'4D81' for 350MHz, '4F81' for 400MHz, '5081' for 425MHz, and so on.

https://github.com/AntMiner/AntGen1/tree/master/manual

Focusing for the Frequency and Frequecy HEX, they share the same values. (I think the calculation/equation should be the same)
So, if I find some specific MHz for U1, I assume that I should be able to apply it to S1,too.

As arguments to the cgminer executable, yes.

But the entries in the asic-freq are used in the function in the /etc/init.d/cgminer script and modified before they get passed to the cgminer executable.

[Aexcu]

Future: We are designing a type of new control board based on ARM A8. When it is ready, the chain number can be up to 16, and the chip number can be up to 256 per chain.

Could this imply that they are actually (possibly) building a board which has 256 ASICs compared to the existing 32? That'd be 8x more, meaning 720 GH/s per blade. 16 blades would thus equal to 11.520 TH/s.

Maybe they have a 1.44 TH/s AntMiner S2 (2 blades rack model) under works?

[Darthswan]

Good Afternoon,

I'm in now looking at over clocking my S1.  Only problem is, I'm not completely familiar with the process.  I do have extra fans for my miner, so I can keep the heat down.  One question I have, in the op, the build dates of the machines, does that matter?  I ask because I got my machine much later.  I know you have to SSH your way into the miner, what are the proper command props?  Is it a cut and paste, or more?  Thanks for your assistance in advance.

[Darthswan]

I'm now overclocking.  I'm in that 190G to 195G range.  Good learning curve.  Now I'm ready for my next machine.

[wickedsick]

i got a nice spike )

[klondike_bar]

Good Afternoon,

I'm in now looking at over clocking my S1.  Only problem is, I'm not completely familiar with the process.  I do have extra fans for my miner, so I can keep the heat down.  One question I have, in the op, the build dates of the machines, does that matter?  I ask because I got my machine much later.  I know you have to SSH your way into the miner, what are the proper command props?  Is it a cut and paste, or more?  Thanks for your assistance in advance.

the instructions are available, but basically:
-SSH in using port 22, u/p is root/root
- 'vi /etc/config/asic-freq' enters the editor for the file
- 'i' key enters edit mode - go ahead and make the changes
-'ESC' returns to view mode
- ':wq!' writes the file and quits the editor
-reboot

I find that 400MHz gives around 201-203GH and 387.5MHz gives about 196-198GH

[Darthswan]

Good Afternoon,

I'm in now looking at over clocking my S1.  Only problem is, I'm not completely familiar with the process.  I do have extra fans for my miner, so I can keep the heat down.  One question I have, in the op, the build dates of the machines, does that matter?  I ask because I got my machine much later.  I know you have to SSH your way into the miner, what are the proper command props?  Is it a cut and paste, or more?  Thanks for your assistance in advance.

the instructions are available, but basically:
-SSH in using port 22, u/p is root/root
- 'vi /etc/config/asic-freq' enters the editor for the file
- 'i' key enters edit mode - go ahead and make the changes
-'ESC' returns to view mode
- ':wq!' writes the file and quits the editor
-reboot

I find that 400MHz gives around 201-203GH and 387.5MHz gives about 196-198GH

Thanks Klondike_Bar.

I figured it out yesterday.  I'm been average 190 to 200. 

[Cheeseater]

Has anyone ran across an Ant that just isn't happy at 400? I have 3 others running at 400 with 200gh and low HW errors but one is just not a happy camper. Lowered it it to 375 and it's running the same speed it was at 400 around 190 now with very low HW errors. Just curious if anyone else has come across a mule as well.

[Darthswan]

Has anyone ran across an Ant that just isn't happy at 400? I have 3 others running at 400 with 200gh and low HW errors but one is just not a happy camper. Lowered it it to 375 and it's running the same speed it was at 400 around 190 now with very low HW errors. Just curious if anyone else has come across a mule as well.

My miner didn't like 400 at all, way to many errors.  At 375, i'm getting 400 numbers.

[bronan]

Well i see the miner doing avg 175 Gh
So i thought why does it go so slow
Read the whole thing about changing the file in the miner
When i looked at that given file i see that it already has the numbers given
Still the boxes do not go faster then around 175 Gh on average
Not even close to 190 at all, anyone has a clue why they run so slow ?!?!?
Both boxes do run about 45 to 48 c with the fans doing 1800 rpm

[Cheeseater]

Did you remove the # signs from in front of the 400 values and place them in front of the 350 values?

[freebit13]

Has anyone ran across an Ant that just isn't happy at 400? I have 3 others running at 400 with 200gh and low HW errors but one is just not a happy camper. Lowered it it to 375 and it's running the same speed it was at 400 around 190 now with very low HW errors. Just curious if anyone else has come across a mule as well.

My miner didn't like 400 at all, way to many errors.  At 375, i'm getting 400 numbers.

Yeah, same here, but I'm sure it's down to the power supply and cooling... the stock fan seems to be happy to keep the chips around 45deg, but they run much better at lower temps.

[marcocoin]

This thread is for support related discussions of the BITMAIN Antminer S2 hashing device

How to overclock your miner to 400MHz / 205GH/s. My suggestion is to clock them at 375. 400 is a bit too harsh on the voltage regulator.
All clock speeds including 375MHz work on both revision of boards.

The miner will draw 500 - 525Watts at the wall (110V mains) after this setting

....

Please donate if it works for you: 1FrW5ka9CRVWdL9EM4Jut9eHWU1a1biyy5

Hi,

Is there a special Btmain Antminer U1 support thread for Wndows users?

Thanks

[slasher71]

Can anyone tell me the timeouts for these frequencies for Build date 2013/11/18
  
375     MHz    '4E81'   '38'
387.5   MHz    '5E85'   ''
393.75 MHz    '5F05'   ''
400     MHz    '4F81'   '35'  
406.25 MHz    '6005'   ''
412.5  MHz     '6085'   ''