Topic: [HOWTO] flash your jalapeno to 8+ ghs - page 2. (Read 85211 times)

Sure. In BFGMiner press "D" for disply, then "M" to show all cores. You will see either two or three.

8gh is darn good for a 2 chip jally, I would not try to flash it.

Chris

I finally got my jally a couple of days ago and to my delight its running stable at 8.4ghs.

I do remember clicking the option to upgrade the unit ( the $100 or so upgrade option ) but then i changed my mind and removed it. in any case its now hashing at a nice speed.

I have a PI and related cables to try and load up another firmware but is there any point as its already running so high ?

I guess its possible I have a 3 chip box ( I am yet to strip off the heatsink to take a look ) is there any easy way to see without having to do this ?

my apologies if this info is already in the thread and I have missed it

I have not, but others have at the jally jumping thread. It's a pretty reasonable idea; we've found that the cases and fans can support 3 chips without too much oddness, going to 4 stresses the power supply, 5 stresses the heat sink and six means time for a new heat sink.

7 should be water cooling and I might have to use LN2 for eight. Time will tell. But a 3 chip jally will put out a pretty honest 12gh with good chips.

Rumor has it, newer jallies are 3 chippers, anyone messed with one yet?

I am willing to help out anyone looking to flash their jali's here in New Hampshire / Mass area. Just shoot me an PM and we can work something out. I have five units and all are running around 7.6 - 9.5Ghz each unit.

I can also help anyone out with mining in general as I have been in the scene for a while now, I haven't posted much, but am more than willing to help out if needed and have been in this scene for about 3 years now. I am fully behind BTC and would really like to see everyone at least know what it is

You people need help. So what happens when your cap blows a seal?

C

By the way, if you have a jally outside the US you might want to look at this thread about ground loops blowing out jallies.

https://bitcointalk.org/index.php?topic=365800.new#new

I'll be updating it. If you find it valuable, please drop me a bitpenny or something.

C

For informational purposes, what it looks like just after you blow a FET.... something like this or this..





But keeping your FET chilled way out helps to avoid this.

Uuuuusually though, in my overclocking experiences, 150W of overclock on 90W worth of motherboard power design, I used to find that unless it blew up at power on, you could sink and aircool the FETs and it would run a couple of years... until the caps got a bit dry.. then the switching speed was eventually too high, the transient pulses too sharp, and you'd finally fry 'em... The way to deal with that would be to inspect caps frequently, first sign of a slight bulge, or if they're running anything other than slightly warm, switch them out.

Can someone link me the appropriate binary to flash a Oct manufactured Jally?

I don't have the environment setup to compile the source yet.

Could be queueing, maybe your queue is too long and work is being rejected as stale?

I shortened up my queue to 3-4 and it's added a gh to my speed at eligus.

C

Hey guys, firmware question:  What would cost a significant difference in speed from the engine status report THEORETICAL_MAX and the speed reported by the mining software?

I just got a new 50GH/s single and flashed it with 1.2.9 (im aware speeds above 60GH/s can put too much stress on the vcore regulator). I have engine zero enabled, tried both ASIC_FREQUENCY_INDEX 8 and 7, both reporting a theoretical max above 60GH/s but it doesn't run at that speed. Tried using the 60GH/s speed limit code and without, doesn't seem to make a difference.

Yes.

Are you adding chips to get them that fast?

*snort*. My super-jally does 20gh for $169+100. Much better than a BE blade. :-)

Glad I didn't buy one of these the BE Blade was a far better deal 10.5 GH for $239.

Anyone offering flashing service in the Los Angeles or San Jose area?  I have two Jalapeno's running at 5Ghs each.

--E

I'm not quite up to doing that for another person, but do you want to sell your totally wrecked jally? I'd like to test some hot-wiring thoughts.

Note: Read your other post, it looks way too screwed up. I'd recommend float the chips off and put them on another jally. Since they are old style chips they should work on a 128mb board as a set of four.

C

if you need 265mb atmega, i have one brand new here.
i buyed it for repair my death jalapeno, but as you know, make no sense to solder it in as the pcb is demaged.

Big big stopping point here. I think this is important:

I know people are flashing these things with all sorts of firmware. We know that the newer jallies with the 256mb flash chips need to be defined specifically in order to flash them. And we know that 1.2.5 and 1.2.9 work on the 256mb chips.

HOWEVER Has anyone successfully flashed 1.2.9 onto a jalapeno that has only 128mb chips?

Here is the reason: I got a Jally in for a chip upgrade. No I am not doing this for money, person asked really nicely and agreed to take all risks. Ok.

As is my protocol I change only one thing at a time. First I unboxed their unit and ran it last night. Says it's 1.2.6, kind of weird firmware but it hashes at 7.6gh overnight without overheating or anything.

Then I flashed it to 1.2.9. Failed flash with the ATMEL set to 256mb chip. Reset to 128mb chip, erased and flashed. However the Jally was *DEAD*. Totally, and completely dead. Power light, no front flashing LED, looked like a serial port. Nothing else, game over.

Flashed two more times, verified code, all good. Fails.

Flasked CK's 1.2.5 code release, Jally comes up happy with 15 cores. Now letting it run for another day to verify stable operation.

WHAT THIS MEANS!

If you have a 128mb Jally, I am not sure if you can load 1.2.8 or 1.2.9 code. Given that this code is needed for running the newer chips, it means YOU CANNOT LOAD NEWER CHIPS ON YOUR JALLY.

So, has anyone verified you can load 1.2.9 compiled code on a 128mb Jally?

C

However has 128mb flash

Sweet thanks!  I'll check it out tomorrow.