Ultra Under-overclock image for A2 Innosilicon by Emdje - V5.0 - page 26.

notlist3d

legendary

Activity: 1456

Merit: 1000

Quote from: alpatcomm on August 02, 2014, 12:54:48 AM

Hi Emdje,

If I were to over clock my A2 5 module 75mh/s miner to Max 1300mhz. Would it be fine to run it, directly under an air-conditioner sitting on 20 degrees Celsius, without making any changes or adding any heatsinks etc to the miner?

All I will do is keep the lid or top of the miner opened.

There may be a way to setup the miner and the wall mounted aircon, so the aircon, points directly at the intake fans, on the device.

Although will aircon air, blowing over the top style cooling, be just as effective?

Thanks again for this great IMG file. Appreciate your work greatly.

I'm not sure I would take the lid off. Essentially you will be letting air go up, yes hot air goes up but the airflow then would not be making it as easily to end of the blades.

Be careful if you are overclocking and thinking about doing things such as leaving case top off. Most likely it would be better with case top on and extra cooling going in from front or adding extra exhaust. And of course temperature of room is a factor.

alpatcomm

newbie

Activity: 22

Merit: 0

Hi Emdje,

If I were to over clock my A2 5 module 75mh/s miner to Max 1300mhz. Would it be fine to run it, directly under an air-conditioner sitting on 20 degrees Celsius, without making any changes or adding any heatsinks etc to the miner?

All I will do is keep the lid or top of the miner opened.

There may be a way to setup the miner and the wall mounted aircon, so the aircon, points directly at the intake fans, on the device.

Although will aircon air, blowing over the top style cooling, be just as effective?

Thanks again for this great IMG file. Appreciate your work greatly.

Dimafiore

newbie

Activity: 39

Merit: 0

Nice image! Do you plan to update it ?

BakSAj

full member

Activity: 157

Merit: 100

Quote from: warhawk187 on July 10, 2014, 12:28:22 AM

I have a 1st batch A2-90, but it never goes above 82Mh/s, I've tried many ways, but still no dice. It may have to do with the fact that 3 out of 6 of the blades have less than 430 cores in them. Could this be the issue??

Its same with my miner, the early series have higher HWs and can use max 1200mhz.

james42

sr. member

Activity: 434

Merit: 250

So you are using the original cgminer shipped with the A2s? 3.9.0?

warhawk187

sr. member

Activity: 327

Merit: 250

I have a 1st batch A2-90, but it never goes above 82Mh/s, I've tried many ways, but still no dice. It may have to do with the fact that 3 out of 6 of the blades have less than 430 cores in them. Could this be the issue??

emdje

hero member

Activity: 686

Merit: 500

I suspect the PSU that is delivered with most of these devices is part of the problem as well. It is running on its max as it is, so overclocking and requiring even more is even tougher. Using a good PSU will help to cut down on energy use as well.

charles2k

sr. member

Activity: 326

Merit: 250

I tried it on my A2mini 30MHash from MinerEU. But on 1300MHz it is hashing a little bit less than with original 1200MHz (on ghash multipool about 0,5-1MHash less).
Tried on 2 different units and on various pools and the same (bad) results.
Probably I have some "B quality" from supplier...

emdje

hero member

Activity: 686

Merit: 500

The easiest way (not entirely correct) is to multiply the amount HW errors with 100(%) and divide it by the number of accepted shares. (this is what I usually do)
A better way to do it is to multiply the amount of HW errors with 100(%) and divide it by the sum of accepted shares, rejected shares and HW errors.

buckrogers

legendary

Activity: 2746

Merit: 1181

so whats the formula to figure out hardware errors from the one line a the bottom? or the real time monitor?

i see HW errors, but no % vs. what was accepted. In other works how do you figure out the actual % of HW errors?

thanks!

emdje

hero member

Activity: 686

Merit: 500

Quote from: buckrogers on July 03, 2014, 12:24:22 AM

Quote from: emdje on July 02, 2014, 06:17:53 PM

You are right I just checked other settings it does not work Cry

I only takes certain values, everything above 1300MHz goes to 1400Mhz right away.
Sorry for this f*ckup guys.

So what happens when you go to 1400?

it explodes?

No it gives about 50% HW errors. It does not explode Tongue

BakSAj

full member

Activity: 157

Merit: 100

We need to have our own cgminer for proper overlocking in order to adjust voltage.

buckrogers

legendary

Activity: 2746

Merit: 1181

Quote from: emdje on July 02, 2014, 06:17:53 PM

You are right I just checked other settings it does not work Cry

I only takes certain values, everything above 1300MHz goes to 1400Mhz right away.
Sorry for this f*ckup guys.

So what happens when you go to 1400?

it explodes?

emdje

hero member

Activity: 686

Merit: 500

You are right I just checked other settings it does not work Cry

I only takes certain values, everything above 1300MHz goes to 1400Mhz right away.
Sorry for this f*ckup guys.

BakSAj

full member

Activity: 157

Merit: 100

Well your setting one of the default frequencies (1300). I have the very early Terminator, so it may be different, but i can only set certain values (1200,1280,1300).

Trying to set 1210 and 1220 Mhz on first two blades:

Code:

[2014-07-03 01:03:58] Started cgminer 3.9.0                    
 [2014-07-03 01:03:58] Run Reset=1                    
 [2014-07-03 01:03:58] ST MCU hardware reset start                    
 [2014-07-03 01:04:02] SPI Speed 4000 kHz                    
 [2014-07-03 01:04:02] ST MCU - Enable (Pre-header)                    
 [2014-07-03 01:04:02] A1 = 1210,2                    
 [2014-07-03 01:04:02] A1 PLL Clock = 1280MHz                    
 [2014-07-03 01:04:02] A1 = 1220,2                    
 [2014-07-03 01:04:02] A1 PLL Clock = 1280MHz                    
 [2014-07-03 01:04:02] A1 = 1200,3                    
 [2014-07-03 01:04:02] A1 PLL Clock = 1200MHz                    
 [2014-07-03 01:04:02] A1 = 1200,3                    
 [2014-07-03 01:04:02] A1 PLL Clock = 1200MHz                    
 [2014-07-03 01:04:02] A1 = 1200,3                    
 [2014-07-03 01:04:02] A1 PLL Clock = 1200MHz                    
 [2014-07-03 01:04:02] A1 = 1200,3                    
 [2014-07-03 01:04:02] A1 PLL Clock = 1200MHz

emdje

hero member

Activity: 686

Merit: 500

I got asked to show the cgminer.log
Here you see cgminer actually uses the frequencies:

Code:

[2014-07-01 21:14:27] Started cgminer 3.9.0                    
 [2014-07-01 21:14:27] Run Reset=1                    
 [2014-07-01 21:14:27] ST MCU hardware reset start                    
 [2014-07-01 21:14:31] SPI Speed 4000 kHz                    
 [2014-07-01 21:14:31] ST MCU - Enable (Pre-header)                    
 [2014-07-01 21:14:31] A1 = 1300,1                    
 [2014-07-01 21:14:31] A1 PLL Clock = 1300MHz                    
 [2014-07-01 21:14:31] A1 = 1300,1                    
 [2014-07-01 21:14:31] A1 PLL Clock = 1300MHz                    
 [2014-07-01 21:14:31] A1 = 1300,1                    
 [2014-07-01 21:14:31] A1 PLL Clock = 1300MHz                    
 [2014-07-01 21:14:31] A1 = 1300,1                    
 [2014-07-01 21:14:31] A1 PLL Clock = 1300MHz                    
 [2014-07-01 21:14:31] A1 = 1300,1                    
 [2014-07-01 21:14:31] A1 PLL Clock = 1300MHz                    
 [2014-07-01 21:14:31] A1 = 1300,1                    
 [2014-07-01 21:14:31] A1 PLL Clock = 1300MHz                    
 [2014-07-01 21:14:31] AUTO GPIO CS                    
 [2014-07-01 21:14:32] spidev0.0(cs0): Found 8 A1 chips                    
 [2014-07-01 21:14:32] Found chip 1 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 2 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 3 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 4 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 5 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 6 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 7 with 54 active cores                    
 [2014-07-01 21:14:32] Found chip 8 with 54 active cores                    
 [2014-07-01 21:14:32] Found 8 chips with total 432 active cores                    
 [2014-07-01 21:14:33] spidev0.0(cs1): Found 8 A1 chips                    
 [2014-07-01 21:14:33] Found chip 1 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 2 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 3 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 4 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 5 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 6 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 7 with 54 active cores                    
 [2014-07-01 21:14:33] Found chip 8 with 54 active cores                    
 [2014-07-01 21:14:33] Found 8 chips with total 432 active cores                    
 [2014-07-01 21:14:33] SPI(cs2) no device                    
 [2014-07-01 21:14:33] ACK(cs2) timeout:cmd_RESET_BCAST-0.0399s                    
 [2014-07-01 21:14:33] SPI(cs3) no device                    
 [2014-07-01 21:14:33] ACK(cs3) timeout:cmd_RESET_BCAST-0.0332s                    
 [2014-07-01 21:14:33] SPI(cs4) no device                    
 [2014-07-01 21:14:33] ACK(cs4) timeout:cmd_RESET_BCAST-0.0325s                    
 [2014-07-01 21:14:33] SPI(cs5) no device                    
 [2014-07-01 21:14:33] ACK(cs5) timeout:cmd_RESET_BCAST-0.0326s                    
 [2014-07-01 21:14:33] A1 boards=2, active cores=864, Efficient=100%, speed=32.2M

emdje

hero member

Activity: 686

Merit: 500

Quote from: buckrogers on July 02, 2014, 06:35:53 AM

Quote from: emdje on July 02, 2014, 03:47:47 AM

Quote from: buckrogers on July 02, 2014, 12:20:01 AM

how many more watts does this update use?

the 1280 from 1200 - brought it from 740- ~ 785

also, what is the max that you have tested going up to successfully?

I haven't measured. But mine does not use 700+ to begin with because I only have a 400 Watt PSU.
Currently I am running it at 1300MHz with 3.6% HW errors. I tried 1330, but that gave me 50% HW errors, haven't tried anything in between yet.
Clevermining reports a 29.8Mh/s average for 24hs.

How do you only have a 400 watt PSU in an A2 84MH/s miner? It comes with a PSU of like 1300watts or something. Are you referring the the 2 blade mini?
29.8 MH/s ?
for what the whole miner? or each board?
or are you talking about the 2 blade mini which already does that speed?

Please clarify.

Thanks!

Yes I am referring to the A2Mini (should have been more clear about that), and yes for the whole miner.

When I used 1280MHz I averaged 27.5MH/s on clevermining. Using 1300MHz I average 29.8 on clevermining, which is about 8% more.

buckrogers

legendary

Activity: 2746

Merit: 1181

Quote from: emdje on July 02, 2014, 03:47:47 AM

Quote from: buckrogers on July 02, 2014, 12:20:01 AM

how many more watts does this update use?

the 1280 from 1200 - brought it from 740- ~ 785

also, what is the max that you have tested going up to successfully?

I haven't measured. But mine does not use 700+ to begin with because I only have a 400 Watt PSU.
Currently I am running it at 1300MHz with 3.6% HW errors. I tried 1330, but that gave me 50% HW errors, haven't tried anything in between yet.
Clevermining reports a 29.8Mh/s average for 24hs.

How do you only have a 400 watt PSU in an A2 84MH/s miner? It comes with a PSU of like 1300watts or something. Are you referring the the 2 blade mini?
29.8 MH/s ?
for what the whole miner? or each board?
or are you talking about the 2 blade mini which already does that speed?

Please clarify.

Thanks!

BakSAj

full member

Activity: 157

Merit: 100

Did you just change the index.php file or you got your own cgminer binary? I have early version of Terminator with max pool speed around 83Mhs and eventhou I can set any frequency I wish (like your mod), the cgminer only allows certain values like: 1200, 1280, 1300 etc. It can be seen in cgminer.log when miner initializes.

emdje

hero member

Activity: 686

Merit: 500

New download link for the image (770Mb): https://mega.co.nz/#!OckAVahZ!PjMxxTXy-WLTgpceoX83u2esed4F-CIYiSnIlelyYJI

You need 7zip to extract it. (copy past the whole link in the browser, the # f*cks up the link)

Topic: Ultra Under-overclock image for A2 Innosilicon by Emdje - V5.0 - page 26. (Read 79798 times)