11 August 2019

11th of August

Farm status
Intel GPUs
All off

Nvidia GPUs
Three running Seti

Raspberry Pis
All running Einstein BRP4 work


GPU compute nodes
Version 2 of the GPU compute nodes was a Ryzen 1700 with a GTX 1660 Ti (they originally had GTX 1060's but I upgraded them to the 1660 Ti when they came out). Version 3 is a Ryzen 3600 with the same GTX 1660 Ti.

I got another two GTX 1660 Ti's and have assembled another of the v3 GPU compute nodes. I also decommissioned another v2 as well as an i3-6100t that was acting as a GPU compute node (with a GTX 1060). I still have one more v3 to assemble and one more Ryzen 1700 to decommission. I will be selling off the older compute nodes.

The first v3 GPU compute node that I built has managed to get its recent average up to 73,400 so far for Seti. They take a bit over a month to reach their highest average and this one has been going just shy of one month. The second v3 GPU compute node that I built has got up to a recent average of 53,300 and its only been running for two weeks.

With just three GPU compute nodes running I've climbed to 61st place on the Seti rankings. I don't expect it to last too long though as once the first v3 GPU compute node is a month old I will get it doing some Einstein CPU work.

28 July 2019

Another one bites the dust

Farm status
Intel GPUs
All off

Nvidia GPUs
Three running Seti work

Raspberry Pis
All running Einstein BRP4 work


GPU compute nodes
The 3 new GPU compute nodes arrived as parts. I have assembled one, which has replaced another of the Ryzen 1700 GPU compute nodes. That is two done - the ones with GTX 1660 Tis. I will work on the other two during the week. I also need to buy a couple more GTX 1660 Ti graphics cards for these last two.

I have Dariks Boot and Nuke running on one of the former GPU compute nodes at the moment erasing the hard disk. Its only been going for 16 hours so far with an estimate of another 6 hours. I then have to repeat the process on the other node before selling them.

The former GPU compute nodes got their RAC (Recent Average Credit) up to 75,600 for Seti so the new ones need to beat that, despite the fact they have less cores. The first one I replaced is currently up to 58,600 and still climbing.


The old and the new
The "old" GPU compute nodes (v2) consisted of an ASUS X370-Pro motherboard, Ryzen 1700 CPU, 32GB of memory, 2TB HDD, GTX 1060 3GB graphics and a 750 watt bronze rated power supply. These pull 235 watts at the wall socket (240 volts) under load.

The new GPU compute nodes (v3) consist of an ASUS X570-P motherboard, Ryzen 3600 CPU, 16GB of memory, 1TB NVMe SSD, GTX 1660 Ti graphics and a 550 watt gold rated power supply.

I need to plug in the power meter to get an idea of how much electricity the new ones use. In theory they should be about the same as the old GPU compute nodes but as you can see there are a few differences between them.

16 July 2019

GPU compute node v3

Here are some pictures of the latest build. Its a GPU compute node. The last picture is the old and new compute nodes side by side.

Parts list
Case  Fractal Design Meshify C
Power supply  Seasonic 550w gold rated
Motherboard  ASUS X570-P/CSM
CPU  Ryzen 5 3600
Cooler  Noctua NF-U9S
Memory  HyperX Predator 16GB (2 x 8GB) DDR4-3200MHz
Storage  Samsung 970EVO Plus 1TB
GPU  ASUS GTX 1660 Ti (6GB)
 








14 July 2019

14th of July

Farm status
Intel GPUs
All off

Nvidia GPUs
Three running Seti

Raspberry Pis
Twelve running Einstein, four being upgraded to Buster.


New GPU compute node
I got the parts for my new GPU compute nodes. They're Ryzen 3600's on X570 motherboards and will be used to replace the existing Ryzen 1700's. I have assembled the first one and its been running for 2 days now. The graphics card was swapped out of the older machine. Despite having two less CPU cores than the machines they replace they're faster so the amount of work being produced seems to be about the same.

I have an issue with the memory thinking its slower than it really is. I purchased DDR4-3200 and the machine is telling me its DDR4-2400. I have raised a bug report with ASUS regarding this. The issue of later kernels (5 or later) not being able to boot doesn't effect me as Debian is still using a 4.x kernel at the moment. I expect there will be a few BIOS updates to resolve issues like this.

Given this success I will order parts for the other 3 GPU compute nodes. I also need to order a couple more GTX 1660 Ti's as I only got two last time and I have four GPU compute nodes. The supplier has run out of stock of Ryzen 3600's and X570 motherboards already so it might take a while for the parts to arrive. I will post some pictures of the new builds in a separate blog post.


Another storage server
I  ordered a 1U rack mount U.2 storage server. You can never have fast enough storage right? It only has 8 drive bays but that is enough for a fast storage server. It will take a while to arrive.

The idea is to have this backing up to the slower (disk-based) storage server which has a much larger capacity. The disk-based storage server has more drive bays and hard disks hold more data. Both servers have dual 10GbE networking.