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The stability problem stems from the fact that the controllers have only 32MB of RAM, which isn't sufficient to run 10 miners including cgminer on, it uses up all the memory and the whole system becomes sluggish and unstable. Just try connecting 5 miners and see for yourself.
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Making the source code open and free is what is best for the community. I know your team worked hard to develop the controller firmware, but really much of that firmware is based on GPL open source projects such as cgminer and cpuminer. By making it open and free, you will have the force of the community there to make improvements and make it better for everyone. I'd love to get in there and modify some simple things right now, such as the timeout. Also I would implement a cold reboot call for when the USB bus hangs.
Firmware coder speaking here. I have been looking into a cold reboot call, it does not seem possible with the controller, as there is no way to toggle the controller's USB power. If you're lucky your USB hub supports per port switching, then you can use hub-ctrl.c Your best bet is using a relay to switch the 5v from the USB (works for me). Anyway this is only a problem with the red miners, the new miners have a ST32 MCU which fixes the hanging problem. |
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Asus r9 280x dc2t - 380Kh/s Clocks: 1040/1500 @ 1.05v --lookup-gap 2 --thread-concurrency 8192 -g 2 -I 13 -w 256 |
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Mindphlux I will get the information you want in 30 mins when I return home. Ill EDIT this part.
I have a beta unit, and everyone keeps on quoting 7-8 watts running these things on scrypt only. I can not confirm that, mine is pulling 45 watts at 12v 0.62amps from the wall. Now I am not sure if after the new firmware comes out that these numbers can change, but currently I am pulling way higher than 8 watts running one unit. Anyone else with a beta unit? I am curious if yours is also pulling that much. I am using a standard 12v 5amp power brick to power the unit. I can take pictures of the setup if necessary.
Are you they connected to the controller or on your PC? If the latter, minerd activates all BTC cores (no way to turn that off on PC), that's why it draws the same power as in dual mode. |
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I was under the impression that the new firmware was close to release a couple days ago? Has anyone spoken with Asiabtc on this matter, and does anyone have an updated timeline to when the release will be?
The firmware is completed today, so nobody has it yet. It will be bundled with the units that will start shipping Monday. I will make a complete guide on how to get started with the new firmware soon. I will also put steps on how to flash from the Chinese firmware (for those that ordered early). Source: I am one of the coders. |
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Do the units that have been recently shipped have the new firmware installed? And if so when will that firmware be release so I can update my beta unit?
Yes, it will be very easy to upgrade existing firmware. Simply navigate to the IP of the controller and click on "Upgrade Firmware", browse for the firmware .bin and click on "Upload". It will start the flashing process and check if the firmware isn't corrupt. After around 1 min the controller should be flashed and you can just continue as usual. I will be able to show you a picture of the output after flashing tomorrow.  |
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Guys be patient please... Jack is working on processing the orders. Because of the huge number of orders he is hardly getting any sleep. Cut him some slack.
The firmware also needed some changes to make it work with the new controller, and his team was dealing with the constraint of trying to fit the whole firmware (including OpenWrt and web UI) on 4MB of flash memory. From what I can see, they have done an amazing job so far.
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Less heat means less power draw.
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I had the same issue... turned out it was just a bad riser. That's Seasonic's PSU protection kicking in.
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Make sure that you use the same parameters as the generated bin file, i.e. : scrypt130511Tahitiglg2tc8192w256l4 -> use -g 2 --thread-concurrency 8192 -w 256
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It's fine to use one PSU imo, I just had 2 of those lying around so why not. But with 2 PSU everything is rock solid stable and running for over a week with no issues what-so-ever.
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My rigs run at 750kh/s per card for a total of 3mh/s and are pulling 985W at the wall, and I think there is still room for more optimization.  Would you mind sharing your settings and which cards you are using? This is what I was hoping to acheive. I want to get 4 280x to run on a 1200W 80plus Platinum-rated Corsair PSU. Just waiting on my paycheck next week to order the rest of the parts. Sure, I'm running 4 x Asus 280x dc2t. Using MSI Afterburner undervolted core to 1.064v, clocks: 1050/1500 Using sgminer 4.0 and optimized scrypt130511Tahitiglg2tc8192w256l4.bin Also undervolted/underclocked Sempron 145 to 1.1v @ 2GHz PSU are dual Seasonic 1000w platinum |
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In regards to the wattage: Very high. Being locked at 1.2v (thanks MSI  ), Killer-watt indicated the entire rig in that screenshot was pulling 1365w from the wall (on a 1500w PSU). Minus the ~140w idle from the system, that's good for ~1300 for the 4 cards = 325-330w per card. Certainly not optimal, and missing the 3:1 khs/watt mark i strive for. It's big khs, but also big power. They are basically mini-290s. Will do more testing later, but being volt-locked maintaining 3:1 khs/watt will be tough. I would be very, very careful attempting vbe7 bios modding with these R9 cards. I know they are basically 7xxx architecture, but there's too many brick reports to just plow ahead and mod/flash. Ouch. Our 280x rigs are undervolted, and pull 1250W at the wall for 5 cards! We're sitting at under 230W/GPU, but we're only getting ~725KHs/GPU. And yes, all of those R9 280x were undervolted with VBE7. EDIT: A 100KH/s gain at the expense of adding 100W is still more profitable, but only slightly. You're talking about about $30 of increased revenue over the course of a month, with only about $10-20 of that being profit (after electric costs). Add the costs of buying larger PSUs, and the fact that you won't be able to undervolt much at those high clock speeds, and the increased temps (80C vs 60C), and you might want to reconsider. My rigs run at 750kh/s per card for a total of 3mh/s and are pulling 985W at the wall, and I think there is still room for more optimization. |
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Yuck, that is some nasty code... WTF, really..?
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Can you please show us the hashrate after it has stabilized (not after 4 min)?
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Sent 80 NXT
Transaction id: 13029214188278496955
Thanks
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I might just order from China, if enough people are interested. Post below in how many pcs you are interested.  Shipment from Europe by DHL (price does not include shipment). It is possible to arrange a cheaper shipping alternative on request. Just to be clear, it uses 50cm long USB3.0 cables, everything you see in the picture is included. |
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