BITMAIN Antminer S1 support and OverClocking thread - page 36.

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

Quote from: forzendiablo on January 10, 2014, 09:33:09 PM

so how far can i push this machine without modyfing it? i mean i can take some extra cooler and put near but i dont want to mess with the design itself.
currently i made it to 220ghs. is it possible to push it higher?

please share how you managed 220GH? I thought these would not go past 400MHz (200GH) without high error rates - presumably due to 1.1V being too little for higher hashrates

forzendiablo

legendary

Activity: 1526

Merit: 1000

the grandpa of cryptos

so how far can i push this machine without modyfing it? i mean i can take some extra cooler and put near but i dont want to mess with the design itself.
currently i made it to 220ghs. is it possible to push it higher?

thecr4ne

newbie

Activity: 27

Merit: 0

I'm using an HP 403781-001 1000W server PSU.

I had to solder some jumpers to get it to turn on, and I soldered some 6 AWG wire from the ground and +12v connection points to a 75 amp rated connector*, and sacrificed 2 modular PCIe cables from an ATX PSU and attached a corresponding connecter to them. (My S1 has the 6-pin PCIe power connectors). I also added a male 4pin Molex power connector to connect additional fans if I decide to.

http://i.imgur.com/0Etu4DZ.jpg
http://i.imgur.com/UFKHyap.jpg
http://i.imgur.com/DezZd5t.jpg

I found pinout diagrams for this and other server PSUs at an RC forum as they use these for battery chargers. The red and blue lines indicate jumpers needed to power on the PSU.
http://i.imgur.com/zinkJ4b.png

I still need to come up with a safe cover for this as there are live, high current elements exposed, but for now I've got a big shroud to keep anything from touching it.

This thing has had no trouble running my S1 at 400MHz. It's not the quietest, but it was only $33 on amazon and I used a gift card, so it was the way to go.

*Note: The +/- signs on the 75amp connectors are opposite where I wanted them in relation to the leads coming from the PSU so I just wired it up to suit my needs, and will re-label them. I have indicated this in one of the images.

mackminer

sr. member

Activity: 348

Merit: 251

What PSU's are people here using - I'm getting more of these - the ones I have currently are limited to only 450watts (Antec).....I was thinking of two steps up in models (620)

Thanks.

goxed

legendary

Activity: 1946

Merit: 1006

Bitcoin / Crypto mining Hardware.

Quote from: alfabitcoin on January 10, 2014, 01:41:41 PM

Bitmain have open sourced S1 miner. Schematics are available so volt regulator data sheet and some instructions.
However, somebody with knowledge need to confirm what resistor to change or pencil mode.

The regulator is a 30AMP part and is running well beyond its rated limits.

alfabitcoin

sr. member

Activity: 476

Merit: 250

Bitmain have open sourced S1 miner. Schematics are available so volt regulator data sheet and some instructions.
However, somebody with knowledge need to confirm what resistor to change or pencil mode.

thecr4ne

newbie

Activity: 27

Merit: 0

I've been running my Antminer S1 for about 3 days (just made it out of newb-town here) at 400MHz and it's going well. Average hashrate is 200-205 GH/s with momentary spikes as high as 241 GH/s according to pool stats. Would be awesome to sustain rates like that. Has anyone tried contacting bitmain directly about specifics of how to increase chip voltage?

I blew a 760W PSU running it (hopefully just the fuse) but now have it hooked up to a 1000W HP server PSU. It required some soldering, and it's a little noisier but it's humming along nicely at this point. I'll hopefully get some pics of the PSU rig posted soon.

chadwickx16

hero member

Activity: 826

Merit: 1000

Quote from: JohnC. on December 06, 2013, 06:12:13 PM

After logging in via SSH the following steps:
1. type: "cd /etc/config"(without the quotes) and hit enter.
2. type: "vim asic-freq"(without the quotes) and hit enter.
3. hit I button to enable "edit mode" and adjust the settings, lines beginning with # are ignored.
4. after you're done hit the ESC button to exit "edit mode".
5. type ":wq" (without the quotes) to execute write and quit.
6. you'll be back in the command line, type reboot to restart your device.

You can check your frequency in the web interface miner status page.
If everything went ok, you're mining with higher speed

Then you can donate to me for providing you with extra steps to unleash ultimate hashing power Tongue

15j3fDzunHtoTsDH7MAKQQiG95q5yWYTfk

Keep looking at your HW errors to make sure your device isn't frying up.
I've added some tiny heatsinks, and running 400Mhz but still 3.3% HW error.
But my Antminer is using the Corsair AX860 80+ Platinum PSU and @400Mhz it's sucking around 395W out of the wall-socket

JohnC. Thank you! Small tip incoming once I get my first payout!

Also, has anyone thought about strapping a delta fan on this?? Possibly higher OC values??

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

Quote from: mackminer on January 09, 2014, 06:52:51 PM

Guys, I have an antminer with an antec 450w psu. 360 is the specified power draw as per the initial group buy page? Has anyone had any good results with overclocking within this limitation?

Thanks.

a 450w psu probably has only ~350W available on 12V so you may have difficulty obtaining 180GH stock speeds. overclocking is out of ht equestion (if there was 450w of 12V, 190Gh might be possible)

mackminer

sr. member

Activity: 348

Merit: 251

Guys, I have an antminer with an antec 450w psu. 360 is the specified power draw as per the initial group buy page? Has anyone had any good results with overclocking within this limitation?

Thanks.

Bobs Yerunkle

member

Activity: 90

Merit: 10

Untitled

Quote from: mvdgeijn on January 09, 2014, 04:59:11 AM

Yesterday 3 antminers arrived. Immediatly set the frequency to 375, all working OK. Now I've set one to 400. I noticed that the processor is 100% used. Isn't that the main bottleneck?
Marc

If you ssh into the S1 and run top you can stare at the process' cpu usage and pretend it is an aquarium.

But as you mentioned, cgminer definitely appears to be utilizing the majority of the cpu. I have seen mention of this in various Bitmain threads but ATM don't have links queued up.
I would guess that this utilization stays fairly consistent (although excessive) through at least the 350 MHz - 400 MHz range.
You have 3? Lucky.

How about setting one at 350, 375, and 400 and start up the aquariums and telling us what you see?

mvdgeijn

newbie

Activity: 8

Merit: 0

Yesterday 3 antminers arrived. Immediatly set the frequency to 375, all working OK. Now I've set one to 400. I noticed that the processor is 100% used. Isn't that the main bottleneck?

Marc

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

Quote from: Guava on January 08, 2014, 06:55:56 PM

Quote from: klondike_bar on January 08, 2014, 06:34:09 PM

worth putting here:

I took my new S1 unit (with PCI sockets) and a PSU with 630W available on the 12V line
at 400MHz its running a little over 202GH and 46-49C
at 425MHz it still falls to ~191GH

it seems the cooling is not the issue, and the issue cant be the regulators (that would act differently) - The chips simply need more voltage in order to achieve this clockrate.

anyone familiar enough with the TPS53355 or the antminer schematics to identify how this could be achieved? I imagine a pencil mod similar to with the bitfury ystem could be used to slightly increase to 1.20V and allow the unit to push past 210GHash

According to Bitmain, you will need to change the resistor for higher voltage.
https://bitcointalksearch.org/topic/m.3580902

of course. however, the question is an issue of what the actual PCB schemativc is. if the R1 and R2 (if there is an R2) values for the TPS53355 are identified, a pencil mod would not be very difficult

Guava

member

Activity: 70

Merit: 10

Quote from: klondike_bar on January 08, 2014, 06:34:09 PM

worth putting here:

I took my new S1 unit (with PCI sockets) and a PSU with 630W available on the 12V line

at 400MHz its running a little over 202GH and 46-49C
at 425MHz it still falls to ~191GH

it seems the cooling is not the issue, and the issue cant be the regulators (that would act differently) - The chips simply need more voltage in order to achieve this clockrate.

anyone familiar enough with the TPS53355 or the antminer schematics to identify how this could be achieved? I imagine a pencil mod similar to with the bitfury ystem could be used to slightly increase to 1.20V and allow the unit to push past 210GHash

According to Bitmain, you will need to change the resistor for higher voltage.
https://bitcointalksearch.org/topic/m.3580902

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

worth putting here:

I took my new S1 unit (with PCI sockets) and a PSU with 630W available on the 12V line

at 400MHz its running a little over 202GH and 46-49C
at 425MHz it still falls to ~191GH

it seems the cooling is not the issue, and the issue cant be the regulators (that would act differently) - The chips simply need more voltage in order to achieve this clockrate.

anyone familiar enough with the TPS53355 or the antminer schematics to identify how this could be achieved? I imagine a pencil mod similar to with the bitfury ystem could be used to slightly increase to 1.20V and allow the unit to push past 210GHash

miter_myles

hero member

Activity: 742

Merit: 500

Think I read one of Sushi's reply once where he stated as long as the machine is hashing normally, but showing XXXX's that it was a "firmware" glitch and all was still well/okay... reboot required for peace of mind OOOOOO's

Bobs Yerunkle

member

Activity: 90

Merit: 10

Untitled

Quote from: Batteryman on January 07, 2014, 11:41:46 AM

I had this happen overnight as well on one of mine. Temp on mine is 42 & 43 and it is sitting in an aircon server room.
Unit is definitely hashing away on 400 setting (202Gh/s) and pool reporting continual hashing data, so xxxx must be bogus in some way, or at least does not prove unit has stopped.

I will join this club.

Woke this morning to:
xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx

Shut it down and let it sit for 5 minutes.

Now back to:
oooooooo oooooooo oooooooo oooooooo
oooooooo oooooooo oooooooo oooooooo

(at least for the moment...)

S1 had been running for >4 days constant.

Batteryman

newbie

Activity: 29

Merit: 0

Quote from: mitty on January 05, 2014, 06:40:54 PM

The "ASIC status" on some of my 400M overclocked Antminers show all x's (i.e., xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx) yet the temps are fine (~44-46) and the hashrate is still showing about 200 GH/s, as well as hashrate on my pool staying the same. Is this a warning that I'm slowly burning out the unit?

I had this happen overnight as well on one of mine. Temp on mine is 42 & 43 and it is sitting in an aircon server room.

Unit is definately hashing away on 400 setting (202Gh/s) and pool reporting continual hashing data, so xxxx must be bogus in some way, or at least does not prove unit has stopped.

mitty

sr. member

Activity: 359

Merit: 250

Quote from: warhawk187 on January 06, 2014, 11:50:57 PM

Anyone know whats the most efficient way to run these? My apartment is running out of available circuits and want to not overload them since the building is old. Any ideas? I could always host a few units at my brothers place as a last resort option.

If you have access to the breaker panel you can install a 240v circuit which will only pull half the current as a 120v circuit for the same power output. PSUs are also slightly more efficient at 240v so you get slightly decreased power consumption there too. Don't attempt this unless you know what you're doing/have researched it thoroughly or just have a friend who knows what they're doing or actual electrician install it. You don't want to mess up wiring since it could create a fire hazard, especially in an old building.

mitty

sr. member

Activity: 359

Merit: 250

Quote from: Bobs Yerunkle on January 05, 2014, 08:25:50 PM

Quote from: mitty on January 05, 2014, 06:40:54 PM

The "ASIC status" on some of my 400M overclocked Antminers show all x's (i.e., xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx) yet the temps are fine (~44-46) and the hashrate is still showing about 200 GH/s, as well as hashrate on my pool staying the same. Is this a warning that I'm slowly burning out the unit?

From what I have read "x" means either not enough power to the chip or overheating.

Since the machine is overclocked and pulling more power, perhaps you are on the cusp of the power range of you PSU?
Do you have a Kill-a-watt (or other such device) to measure what the S1 is pulling at the wall?

Quote

6. I see "x" in the ASIC Status

For the ASIC status wise, "x" doesn't necessary means the chip is faulty or failing. If the hashing power seems to be affected, please check your PSU and wiring and reboot and check the status a few times. It should go back to an average 168-180 gh/s range per AntMiner.

when you are getting "x" on the ASIC chip status, please turn off the antminer and double check your PSU cables are connected well and restart. Check the status in about 5 minutes and every 30 minutes for a few hours and see if the "x" are showing up constantly at the same chip or randomly changes or completely disappear.

src: https://bitcointalksearch.org/topic/setup-troubleshoot-bitmain-antminer-s1-180ghs-miner-344970

Ty for the info & sorry for not checking the support thread first!
My power supplies are definitely more than enough (1000w and 1200w PSUs each with two miners) and the temp being reported on the web interface also seems fine (no higher than 47). They seem to be hashing fine so I'll just leave it.

Topic: BITMAIN Antminer S1 support and OverClocking thread - page 36. (Read 144941 times)