Building an Ethereum Mining Rig

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Over the next few weeks, we will be launching a farm using ethOSa linux distro that mines Ethereum out-of-the-box. Bookmark this page and come back to watch the progress on ethos1. The PDUs now run at A and things are lot cooler. The only issue is that some GPUs ethereum mining rig 2016 to be underclocked. We are monitoring which ones go down and underclocking them as we go.

We are also going to investigate possibility of installing a passive intake vent at the other side of the warehouse. Some could not take that clock; that issue will be solved with some tuning. To achieve mh, we will run a script that finds the most optimal overclock on a per-gpu basis. We found a GPU that had no fan control always ran at rpm. We attached a 15W 80mm delta fan to ethereum mining rig 2016, and now it runs pretty cold.

Therefore, we pasted it with a copper heatsink and Prolimatech PK2 thermal compound. It is now ethereum mining rig 2016 coldest CPU in the farm rig f2. We are using Stilt's 1. Before flashing, we make sure to get a video signal from each rig, to watch the progress. Flashing to Stilt's bios resulted in a dramatic temperature and power usage drop. We are still running at core, for a final stability check. We have set all GPUs to mhz core until full launch.

After the farm is fully up, we will apply overclocks and BIOS flashes. For each rig, plug in one GPU ethereum mining rig 2016 check for signal. This lets us use the switched rack PDUs to reboot remotely. This allows us to tuck away anything that might impede airflow. For risers, we used our extra stock of 16x16x powered ribbon risers. All modular cables have been attached.

All GPUs are now very close to their final provisioning location. The dedicated monitor showcases the first live rig, and is attached to the side of the rack with zip ties. We are using 3 meter USB and DVI extension cables stemming from the keyboard and monitor, so that any troubled rig can be investigated quickly. Even though we are using 4 GPUs per rig, this will allow us to upgrade to the next generation of more energy efficient GPUs without much hassle.

This allows for easy swapping of GPUs without cutting any zip ties. The first of two frames has been assembled. Insulation has been added to the inside of the wall, along with foam-in-place and duct tape, to create an airtight seal. This is so that the hot air does not permeate back through the wall. The fan has been installed. All that is left is to put insulation inside the wall around the fan, and duct tape the inside wall gaps.

This will prevent the heat from flowing through the inside of the wall. The breaker panel provides A V service. We are using V because it is slightly more efficient than V, but mainly because it helps to create a denser deployment. Since we are provisioning 50 rigs, each ethereum mining rig 2016 taking W, we need the help of the adjacent unit. Therefore, our electrician is running circuits six 30A LR circuits from our panel, and four 30A lR circuits from our neighbor tenant.

We have an agreement to pay for ethereum mining rig 2016 power that we use from ethereum mining rig 2016 neighbor's panel.

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However recently a few things changed; first, with Ethereum entering the scene it became a profitable endeavor with a ROI that would exceed the initial investment in less than a year. So after running all the numbers to make sure it was profitable, and testing it out on genesis-mining. Really in many ways it is a win-win proposition. Like so many other things I get into I had to take my endeavor to the extreme. I wanted the best, most profitable, mining rig I could build; something that would be equally powerful for my professional endeavors as well.

Of course I also needed to figure out how to accommodate four double-wide graphics cards on any normal motherboard. I spent about 2 days surfing NewEgg. Added some velcro to secure that 4th card.

Looks much better now and is a bit safer than before. With current network parameters; that means I mine about one block each day at about 5 ETH per block. It took me about 2 days to fully assemble the box and get it to the point where it was mining Ethereum.

In the end I gave up and moved to Ubuntu. Once Ubuntu was freshly installed on the system I just had to add a few repositories and install a few packages. I found a tutorial which described the process pretty accurately. After racking my head for hours I found that if i ran it with the ethmine command instead it ran successfully.

Here are the commands I ran to get the miner going. Never content to just leave things as they are, I wanted to try to find ways to tweak the settings to boost performance slightly. Two settings in particular struck me as useful, as they effected how much work is sent to the GPU at one time. These were --cl-local-work and --cl-global-work. Knowing I had a top of the line GPU I figured boosting these values a bit might increase performance.

Indeed they did, but I had to play with a lot of different numbers to get the benchmarks to max out. I tried enabling the CPU too with --enable-opencl-cpu however that produced a segfault. So I left it out. With an ROI that pays for itself in under a year, and the future usefulness of such a rig, it is really a no brainer for me to have set this up. It was also a lot of fun, and profitable. Though I think a cost-analysis might be useful to compare different rigs and hash rates to ultimately figure out what is the cheapest rig for the output it produces.

I advice upgrading to something with a bit more power, next model up should do it. I will add names and pictures here. The following is from Rolf Versluis rolfv prioritycue. The specifications are as follows: Roadblocks It took me about 2 days to fully assemble the box and get it to the point where it was mining Ethereum. Conclusions With an ROI that pays for itself in under a year, and the future usefulness of such a rig, it is really a no brainer for me to have set this up.

I hope that helps you guys in setting up your own mining rigs, happy mining! Updates turns out the power supply is under-powered for the system.