i just upgraded to cgminer 8/21/13 and now 2 of my 3 avalons have yellow flashing lights even though they appear to be hashing just fine.
anyone else notice this and what does it mean?
Topic: Avalon ASIC users thread - page 85. (Read 438596 times)
question, im sure its been answered a thousand times, but the rejection rate, i see it a bit high now?
a:5929 r:434
but maybe it settles as ive read? running avalon-auto.
346 1800 2280 2400 21 46 46
i'll see in a while if it goes up to 350 as temp is ok, if it settles on a lower rate as previously shown in past of this thread.
4 hours in, and its still on 10% reject. That normal? on b2 3 unit, i now get 70avg instead of 80..
and its not hot, running 342mhz.
im setting --avalon-freq 340-355 to test..
works alot better with std freq 340, and avalon-freq 340-365.. 0.7% rejects.. temp 24 48 49.
Next il try std 350 and 350-375 or 380.
a:5929 r:434
but maybe it settles as ive read? running avalon-auto.
346 1800 2280 2400 21 46 46
i'll see in a while if it goes up to 350 as temp is ok, if it settles on a lower rate as previously shown in past of this thread.
4 hours in, and its still on 10% reject. That normal? on b2 3 unit, i now get 70avg instead of 80..
and its not hot, running 342mhz.
im setting --avalon-freq 340-355 to test..
works alot better with std freq 340, and avalon-freq 340-365.. 0.7% rejects.. temp 24 48 49.
Next il try std 350 and 350-375 or 380.
hi,
i now got it on lan (after wifi not working well at all), but somehow, the lan ip was not working, i think i set the broadcast address wrong (since my hosting center has /28 subnet)
Anyway, i now reset it in to failsafe mode (ip became 192.168.1.1 as openwrt says ,not 192.168.0.100 as avalon says).
however, when i try command firstboot, i get this:
root@(none):/# firstboot
/sbin/firstboot: line 3: /sbin/jffs2reset: not found
Any idea how i can get it back to the working firmware with preset ip of 192.168.0.100? so i can login and set the new ip once again?
Thanks for help. Winning help gets minimum 1 hour of mining. (b2 3 unit 82gh)
EDIT: (this is where you set ip in openwrt if you entered it wrong)
vi /etc/config/network
config interface 'lan'
option ifname 'eth0'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.0.100'
option netmask '255.255.255.0'
option gateway '192.168.0.1'
option broadcast ''
option dns ''
No deal winner this time..
i now got it on lan (after wifi not working well at all), but somehow, the lan ip was not working, i think i set the broadcast address wrong (since my hosting center has /28 subnet)
Anyway, i now reset it in to failsafe mode (ip became 192.168.1.1 as openwrt says ,not 192.168.0.100 as avalon says).
however, when i try command firstboot, i get this:
root@(none):/# firstboot
/sbin/firstboot: line 3: /sbin/jffs2reset: not found
Any idea how i can get it back to the working firmware with preset ip of 192.168.0.100? so i can login and set the new ip once again?
Thanks for help. Winning help gets minimum 1 hour of mining. (b2 3 unit 82gh)
EDIT: (this is where you set ip in openwrt if you entered it wrong)
vi /etc/config/network
config interface 'lan'
option ifname 'eth0'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.0.100'
option netmask '255.255.255.0'
option gateway '192.168.0.1'
option broadcast ''
option dns ''
No deal winner this time..
10X dude
i have looked at your photo with wires:) and i liked it very much. that explains things for us none experts.
have yo measured how much a module/chip draws at 400+ with avalon design?
At stock voltage? or overvolt? at stock you will not be able to get anywhere near 400mhz
I mean overvolt.At plug (220V/110V - all modules and their count) or at 12V (single module) one of them will be ok for me. I will have a clue approximately how much Amps each chip draws
10X
Im running with 31k piggyback and that gives me 1.336v under load at the bottom chip.
Be aware that for me at 460mhz I am 2x the wattage as a stock Avalon! At bare MINIMUM you need a 1200watt powersupply for a 4 module unit!
I need to find out how to deal with 1600watt total at 460mhz!!!
Not at 400 but at 460 you can expect to be exactly 2x current of stock speeds.
10X dude
i have looked at your photo with wires:) and i liked it very much. that explains things for us none experts.
have yo measured how much a module/chip draws at 400+ with avalon design?
At stock voltage? or overvolt? at stock you will not be able to get anywhere near 400mhz
I mean overvolt.At plug (220V/110V - all modules and their count) or at 12V (single module) one of them will be ok for me. I will have a clue approximately how much Amps each chip draws
10X
10X dude
i have looked at your photo with wires:) and i liked it very much. that explains things for us none experts.
have yo measured how much a module/chip draws at 400+ with avalon design?
At stock voltage? or overvolt? at stock you will not be able to get anywhere near 400mhz
Temp readings of up to 60 are fine on batch 1 and 2. Temp readings up to 80 are fine on batch 1 and 2.
Don't you mean
Quote
Temp readings up to 80 are fine on batch 3.
?
Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
There are really only 2 areas where a switching VR can fail. Heat and inductor saturation. If the FET cant handle the current the friction of the electrons traveling through the junction turns to heat. The heat will eventually kill the part. If you keep things cool (im watercooling) you can go amazingly far past design tolerances.
I dont know what the inductor saturation point is. I havent looked up the spec. I can say that I can hold my finger directly on the inductor and it dosnt burn me. Its not comfortable, probably about 45-50c temp.
As far as killing my Avalon goes... I dont care. I need to get as much out of this thing in the next 30 days... after that it probably wont be profitable to run.
It is more important to eliminate bottlenecks like resistance of the transistor and the current paths. That's unnecessarily generate additional heat.
i have looked at your photo with wires:) and i liked it very much. that explains things for us none experts.
have yo measured how much a module/chip draws at 400+ with avalon design?
Can you post photo from broken hash module ?
2 weeks ago my Batch #3, 4 module stopped hashing using a 850w power supply.
I had to disconnect the motherboard atx power connector to get it back online.
When I reconnected it a huge bright spark came from module #4.
Now 2 weeks later, using a 1050w gold corsair, my 4 module Batch #3 has stopped hashing again.
I disconnect the atx motherboard connector and then reconnect it. Avalon powers back on, however module #2 has a huge spark come from it as well. It looks like a huge glow from a capacitor each time.
Is this something to be concerned about? Has anyone else had this happen to them? The unit is hashing fine now...I just wonder what is happening.
I have the following connectors hooked up:
1- atx motherboard
2- pci-e 8 pin connectors
2- CPU 8 pin connectors
Each time this has happened, I have had to reset power to my controller board to get the thing mining properly again.
I had to disconnect the motherboard atx power connector to get it back online.
When I reconnected it a huge bright spark came from module #4.
Now 2 weeks later, using a 1050w gold corsair, my 4 module Batch #3 has stopped hashing again.
I disconnect the atx motherboard connector and then reconnect it. Avalon powers back on, however module #2 has a huge spark come from it as well. It looks like a huge glow from a capacitor each time.
Is this something to be concerned about? Has anyone else had this happen to them? The unit is hashing fine now...I just wonder what is happening.
I have the following connectors hooked up:
1- atx motherboard
2- pci-e 8 pin connectors
2- CPU 8 pin connectors
Each time this has happened, I have had to reset power to my controller board to get the thing mining properly again.
Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
There are really only 2 areas where a switching VR can fail. Heat and inductor saturation. If the FET cant handle the current the friction of the electrons traveling through the junction turns to heat. The heat will eventually kill the part. If you keep things cool (im watercooling) you can go amazingly far past design tolerances.
I dont know what the inductor saturation point is. I havent looked up the spec. I can say that I can hold my finger directly on the inductor and it dosnt burn me. Its not comfortable, probably about 45-50c temp.
As far as killing my Avalon goes... I dont care. I need to get as much out of this thing in the next 30 days... after that it probably wont be profitable to run.
It is more important to eliminate bottlenecks like resistance of the transistor and the current paths. That's unnecessarily generate additional heat.
Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
There are really only 2 areas where a switching VR can fail. Heat and inductor saturation. If the FET cant handle the current the friction of the electrons traveling through the junction turns to heat. The heat will eventually kill the part. If you keep things cool (im watercooling) you can go amazingly far past design tolerances.
I dont know what the inductor saturation point is. I havent looked up the spec. I can say that I can hold my finger directly on the inductor and it dosnt burn me. Its not comfortable, probably about 45-50c temp.
As far as killing my Avalon goes... I dont care. I need to get as much out of this thing in the next 30 days... after that it probably wont be profitable to run.
If avalon will not be profitable in a month i am curious what will be profitable at all?
The money printing machines are history...And we have to get used to it.
Best
i think i found the cause of my problem, i read somewhere, that the current is not strong enough to the wifi unit, and since i dont have an antennae, its around 30% reception only. this makes the connection strong in the beginning (before overclocking kicks in), and when OC is on max, there is not enough for the wifi, and then it starts slowly dying off.. it takes around 30min to one hour to go from 100% hash speed down to basically thousands of hashes.. will try lan tomorrow. but annoying as it worked just fine for three days!
Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
There are really only 2 areas where a switching VR can fail. Heat and inductor saturation. If the FET cant handle the current the friction of the electrons traveling through the junction turns to heat. The heat will eventually kill the part. If you keep things cool (im watercooling) you can go amazingly far past design tolerances.
I dont know what the inductor saturation point is. I havent looked up the spec. I can say that I can hold my finger directly on the inductor and it dosnt burn me. Its not comfortable, probably about 45-50c temp.
As far as killing my Avalon goes... I dont care. I need to get as much out of this thing in the next 30 days... after that it probably wont be profitable to run.
What value resistor would I piggyback onto R10 to target 1.30V, or 1.25V?
For 1.3V (1.278V under load) I use 47k. No problem with 400MHz and 0.98% HW, Rejected 0.38% For stability I suggest sold 2mm2 wire from coil to the end of board. Top cooper layer (VDD_1.2) is too thin to carry such high currents.
Look on the picture below
https://www.dropbox.com/s/68f6k5tafw1i58f/20130825_025617-2.jpg
Im running with 31k piggyback and that gives me 1.336v under load at the bottom chip.
Be aware that for me at 460mhz I am 2x the wattage as a stock Avalon! At bare MINIMUM you need a 1200watt powersupply for a 4 module unit!
I need to find out how to deal with 1600watt total at 460mhz!!!
Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
According to the guys that have done the mentioned mods, thats a soft limit of the DC/DC converter. Meaning exactly what, I dont know =P ... I wonder if it has to do w/ hard limit of maximum POWER(watts) output as in maybe its max capable voltage @ 20amps is what its rated for. Which is a lot more than the voltage we put through it.
yes 80 for B3
but i thought than for b1&2 temps above 50 are dengerous for 24/7 operation. am i wrong? can i have 55 or even 59 for 24/7?
but i thought than for b1&2 temps above 50 are dengerous for 24/7 operation. am i wrong? can i have 55 or even 59 for 24/7?
I'd imagine that also. since b2 readings are not on chip and should be 20dgrs cooler than chip. at 50+ your chip reading should be 70+.
After a few hours off, it connected cgminer (i did no changes of firmware, i still run the 0821 version). i now have it on std freq 300, avalon-auto 300-350 avalon-fan 80 , or should i do 100 on fan? its damn noisy.. 
heat says 30,40,40, so i believe its 40,60,60? ill let it run a few hours, and then check heat again and maybe put fan on 90?
It was on for a while, then it stopped hashing again.. i am fearing that its the wifi thats not connecting too well. or is it really overheating with 300-350 on fan at 80%?
You got it backwards. Temp readings of up to 60 are fine on batch 1 and 2. Temp readings up to 80 are fine on batch 1 and 2. I can't figure out which firmware you ended up using, but mine will just adjust the fanspeed automatically fine for temperature and you shouldn't set any temps or fanspeeds if you have a batch 1 or 2.heat says 30,40,40, so i believe its 40,60,60? ill let it run a few hours, and then check heat again and maybe put fan on 90?
It was on for a while, then it stopped hashing again.. i am fearing that its the wifi thats not connecting too well. or is it really overheating with 300-350 on fan at 80%?
I will leave all temp settings out then. However, what could be the reason for it to just stop mining? fans are not going high at all.
Could it be connectivity that dies? Its on wifi for now.
Thank you for your time!
What value resistor would I piggyback onto R10 to target 1.30V, or 1.25V?
For 1.3V (1.278V under load) I use 47k. No problem with 400MHz and 0.98% HW, Rejected 0.38% For stability I suggest sold 2mm2 wire from coil to the end of board. Top cooper layer (VDD_1.2) is too thin to carry such high currents.
Look on the picture below
https://www.dropbox.com/s/68f6k5tafw1i58f/20130825_025617-2.jpg
Im running with 31k piggyback and that gives me 1.336v under load at the bottom chip.
Be aware that for me at 460mhz I am 2x the wattage as a stock Avalon! At bare MINIMUM you need a 1200watt powersupply for a 4 module unit!
I need to find out how to deal with 1600watt total at 460mhz!!!
Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
yes 80 for B3
but i thought than for b1&2 temps above 50 are dengerous for 24/7 operation. am i wrong? can i have 55 or even 59 for 24/7?
but i thought than for b1&2 temps above 50 are dengerous for 24/7 operation. am i wrong? can i have 55 or even 59 for 24/7?
Temp readings of up to 60 are fine on batch 1 and 2. Temp readings up to 80 are fine on batch 1 and 2.
Don't you mean
Quote
Temp readings up to 80 are fine on batch 3.
?
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