Hacking a BFL Jalapeno to 32GH and beyond....(???) - page 13.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Quote from: MrTeal on December 28, 2013, 04:02:51 PM

If you want to go crazy, I'd love to see you use something like this and cover the whole back side, instead of little press-on heatsinks (with less than ideal tape).
http://www.ebay.com/itm/2x-New-Large-Rectangle-Aluminum-Heatsink-w-screw-mount-DIY-POWER-AMPLIFIER-LED-/251261395030?pt=LH_DefaultDomain_0&hash=item3a8058a056

Drill some clear holes to mount on that big heatsink for the ASICs, and drill and tap some holes to screw the PCB down to the backside heatsink.
I think you'd have no problems running 7-8 chips with a setup like that.

Hm. I have thought about cutting up an old 486 heat sink; the key here is surface area.

What would really win would be water block cooling of course, and one of the reasons I bought a big corsiar block is the thought that I could mount it on the back of the board (the large bracket *just* clears the sides of the LS board) and then just put the stupid AL heat sink on the top.

The full surface area cooling ability of a block might then allow me to cool the whole bottom of the board including that massive ground plane. Since I'll move it forward as much as possible, it might be able to cool the fets from the bottom, and remove the heat sink need on top.

We shall, as they say, see. But I'm convinced that water cooling is the way to go.

MrTeal

legendary

Activity: 1274

Merit: 1004

If you want to go crazy, I'd love to see you use something like this and cover the whole back side, instead of little press-on heatsinks (with less than ideal tape).
http://www.ebay.com/itm/2x-New-Large-Rectangle-Aluminum-Heatsink-w-screw-mount-DIY-POWER-AMPLIFIER-LED-/251261395030?pt=LH_DefaultDomain_0&hash=item3a8058a056

Drill some clear holes to mount on that big heatsink for the ASICs, and drill and tap some holes to screw the PCB down to the backside heatsink.
I think you'd have no problems running 7-8 chips with a setup like that.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Note to all: I am going straight to jalapeno hell :-)

This is the 4 chip+1 dead chip "Danger Jally with a much... bigger... cooler. 5 chips of heat.

Temps went from 80c with the stock fan down to 38c and holding. Now wait till I get water cooling. :-)

Note: You do have to do a bit of stuff. First you need to bevel the edges so it will not touch the caps right around the chips. Then you need to drill and tap two new holes, try to center it as much as possible so you don't hit one of the heat pipes with the drill.

But man, this solves the heat problem. I'll try taking this one up to seven chips as soon as I get the little heat sinks for the FETs.

C

Drug5bitz

full member

Activity: 123

Merit: 100

I'm not worried about the HW errors on that one look at this lol. 2x4chips 1x6chips 1x3chips and 1x2 chips. My six chip carefully hand picked for being the most stable coldest unit. Adding chips on these gravy with a steady hand. I wouldn't suggest above 3 chips on the blocks. I vaguely recall you saying the front light would blink if the chips didn't have enough current. My 3 chip will only run on speed 1 only! I have it on my PSU now and thought maybe it could handle a speed boost. Here's what I have from last night.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Just a quick recap: What do I have here:

Jally 1: 19gh unit, 5 chips, the first jally. Running with a BFL type 1 sink, runs great.
Jally 2: 14gh unit, 4 chips. This is the crap jally, one I bought from a UK person for full value that turned out to have the blown FTDI chip.
Jally 3: 16gh unit, 4 chips. One of my new jallies, 4 chips in a cross pattern.
Jally 4: 12gh unit, 3 chips. The other new jally, I don't want to push the power supplies if I can help it.
Jally 5: 8gh unit, 2 chips. This is a stock "control" jally for a friend.
Chili 1: 36gh unit, 8 chips. Bought for .7btc, this is a cool little thing.

At this point I'm getting good enough to start thinking about offering this as a service. I have done 8 chips in a row here with no problems, and the combination of flux, heat, preheat, and my loupes to ensure every chip is perfectly on the balls has reduced my failure rate to zilch.

Need to figure out a price though; going from a 2 chip to 3 chip jally seems to add about $200 in value on Ebay. No one has sold a 4 chip jally.... So message me; what would be a fair price in your mind to turn your jallies into more money?

Any thoughts?
C

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Well, more chips in the boards. Because I am waiting on heat sinks (always something...) I am running my crummy jally (the one with one temp sensor, the one that blew up the FTDI chip, etc etc etc) with a total of five chips, 4 running and one not. The not was the one I need to reball; I really should have taken it off the board. Because board temp is at 73.

Now it was going to 80, but I put this super fan+heat sink+pipes on the unit and it's down to 73, which is good but still high. And it's only hashing 14gh because at least one of the factory chips was crap (it hashed 6gh stock). Oh well, you take what you can get in this world, and this keeps me from selling the poor little thing on Ebay.

In fact one of the side fails of all this is I am not going to be able to sell this stuff on Ebay; it's requiring bigger sinks and a lot of thought. In retrospect this will probably be a mistake but fuck it, such is life. Actually I could turn off the extra chips in software and sell them in stock boxes as three chip jallies. We'll see.

I have two cooling units on the way; another 120v unit and a $70 corsair one with two fans and a big heat sink. That's going on the 7-8 chip unit I think... :-)

Never dull.
C

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Quote from: HellDiverUK on December 28, 2013, 12:13:28 PM

\
I thought is was more than that. I did check bfgminer more closely, and it's saying something about 'parallel queue processing' which I'm thinking sounds a bit more like what BFL were alluding to.

Well, yes. BFL runs the chips as units, within each chip is up to 16 sub processors that the work is farmed out to. So each chip shows up as a computing node, not the sub processors.

Chili takes this a slight step further by dividing all the work to all the chips as one big shot. Thus it looks to bfg like one big-ass chip. It's more efficient in some ways, probably about 4gh extra per 8 chips I think.

C

HellDiverUK

hero member

Activity: 1246

Merit: 501

Quote from: Photon939 on December 28, 2013, 11:09:39 AM

Quote from: HellDiverUK on December 28, 2013, 09:49:57 AM

I notice on BFL's site they mention some sort of 'teaming' system:

Additional Bitforce SC products can be added to the chain via a USB hub for linear performance multiplication with no overhead cost. Each additional unit is auto-configured and folded into the workforce without any user intervention required.

I'm using BFGMiner, the two Jallys I have are running off a single USB hub. What am I looking for in regards this 'teaming'? Is it important? Does it actually help? How do I know if it's working?

It just means that if you have two 5GH/s Jalapenos and you plug them into one computer your hashrate is 10 GH/s. It's just marketing jargon that says performance scales linearly with the amount of units you buy.

I thought is was more than that. I did check bfgminer more closely, and it's saying something about 'parallel queue processing' which I'm thinking sounds a bit more like what BFL were alluding to.

Photon939

sr. member

Activity: 452

Merit: 250

Quote from: HellDiverUK on December 28, 2013, 09:49:57 AM

I notice on BFL's site they mention some sort of 'teaming' system:

Additional Bitforce SC products can be added to the chain via a USB hub for linear performance multiplication with no overhead cost. Each additional unit is auto-configured and folded into the workforce without any user intervention required.

I'm using BFGMiner, the two Jallys I have are running off a single USB hub. What am I looking for in regards this 'teaming'? Is it important? Does it actually help? How do I know if it's working?

It just means that if you have two 5GH/s Jalapenos and you plug them into one computer your hashrate is 10 GH/s. It's just marketing jargon that says performance scales linearly with the amount of units you buy.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

By the way Drug: 1.3% errors is really pretty reasonable, have you tried reflashing it with a speed of 5 or something?

All my new jallies have two chips, so yours may be a special case. However I'm curious to see if you can flash any of the others, the boards do not look different and can take chips with this software load.

C

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Quote from: bcp19 on December 28, 2013, 09:26:08 AM

Quote from: miaviator on December 28, 2013, 01:00:34 AM

so bfl is selling 10G jallys at $574? If those are three chips we could get what 18-30Ghs out of them just with better cooling and an update? or am I way off base here?

They're $374 on the website. I doubt you could push them to 18+ with only 3 chips, for the most part they seem to run at about 5GH max per chip.

4gh is the most you will get out of a chip in normal operation. The Chili I have gets 5 (39gh total, 37gh submitted after errors) but that is using exceptional chips, is running Mr. Teal's software, and adjusts core speeds per chip based on chip temp and actual chip frequency. It is amazing.

Right now my 3 chip turbo jally is getting 12gh, and my 4 chip is getting 15.9, and my five chip jally with a really crummy chip is getting 19gh. So it depends.

This morning's job is going to be boosting my 4 chip to 5 and maybe flashing the 12gh one to see if it goes faster or slower with the level 9 code.

C

HellDiverUK

hero member

Activity: 1246

Merit: 501

I notice on BFL's site they mention some sort of 'teaming' system:

Additional Bitforce SC products can be added to the chain via a USB hub for linear performance multiplication with no overhead cost. Each additional unit is auto-configured and folded into the workforce without any user intervention required.

I'm using BFGMiner, the two Jallys I have are running off a single USB hub. What am I looking for in regards this 'teaming'? Is it important? Does it actually help? How do I know if it's working?

HellDiverUK

hero member

Activity: 1246

Merit: 501

Quote from: Drug5bitz on December 26, 2013, 03:19:50 AM

P.S. the FW version written on back is 292..... hmm board rev. C same as others. This has to be a FW issue somehow....

My "7GH" Jalapeno that I finally got on Christmas Eve (late June order) came with 292 on it. It's running around 8GH.

bcp19

hero member

Activity: 532

Merit: 500

Quote from: miaviator on December 28, 2013, 01:00:34 AM

so bfl is selling 10G jallys at $574? If those are three chips we could get what 18-30Ghs out of them just with better cooling and an update? or am I way off base here?

They're $374 on the website. I doubt you could push them to 18+ with only 3 chips, for the most part they seem to run at about 5GH max per chip.

miaviator

donator

Activity: 686

Merit: 519

It's for the children!

so bfl is selling 10G jallys at $574? If those are three chips we could get what 18-30Ghs out of them just with better cooling and an update? or am I way off base here?

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

And thanks to an incredibly generous Christmas donation (more in a bit) I think I'm going to need to research the heat issues a bit more.

I'll be taking a unit here to at least 7 chips this weekend, which is going to be complex. I think I will use this on the bottom of the board:

http://www.amazon.com/gp/product/B005SEZBXY/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

To control the heat with the traditional AL heat sink on the top (running this mess upside down). I'll also be buying another water block cooling system for $64 and see how that works as well.

Ok, I picked this unit up. Big. Big big. But big could be good; I could put this on the back of the board and use it to cool the FETs and the main chips in one shot. We shall see.

http://www.ebay.com/itm/CORSAIR-Hydro-Series-H100-CWCH100-RF-Extreme-Performance-Liquid-CPU-Cooler-/291044040581?pt=US_Water_Cooling&hash=item43c3939f85

And on a side note the ebay guy just added canadian shipping. If you want it from another country just PM him on Ebay and he will add the country. 4 more coming by Monday, maybe even this new water block....

C

This will be interesting.

C

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Well, right now I have a lot of stuff in flux. One of the new jallies is at 16gh, one is at 12, my main one is at 20, another two are at 8, and I'm probably going to leave it at that for tonight. I need to rewire the power supplies and start running off the real power from the corsairs in order to go higher. I would be doing that now, but my *&#@(* power cord didn't come from BFL.

Still, it's pretty hefty. And it's seriously starting to get warm. I have the window open in the mining room and I may start moving this project out to the work shed.

C

Photon939

sr. member

Activity: 452

Merit: 250

In case anyone is interested, here's the stats from my 11 Black Friday sale units that I bought for shits and giggles. The single runs right at the rated spec and now after some firmware tweaks runs at 54 GH/s, one of the jallies seems to have a shitty chip but still better than spec, the others are excellent.

Photon939

sr. member

Activity: 452

Merit: 250

Quote from: Drug5bitz on December 26, 2013, 02:53:07 PM

After running for over an hour @ speed 1. One chip is really slow on submissions and another high with HW errors. Leaving it for now going on to the next jalapeno......

Load up the second one in atmel studios and it's a 128kb version..... Those wouldn't accept the 1.2.9 because of the size right? Just want to check before writing a file that's not going to fit. It also just slow flashes the power LED if I use a brick. Only will power up fine on my PSU.

You can flash the new Jallies with the 128kb chip with 1.2.9, you just need to recompile the solution for the correct chip and make sure to set product type as Little_Single, the full single firmware is more than 128kb

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Well, I got my Black Friday jallies. Not bad overall, I've already added a chip to 1. Instant +4gh.

The chip came from LentBT, I ordered two to test, chips arrived well packed and quickly. Chips are new, new style ones, and went on the board with no problems. I'll put the second one on the other board later tonight, then stick the next four (yes, I ordered 4 more) to make these 5 chip monster jallies.

Moving right along :-)

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