We recommend a CPU with the highest number of cores as possible. AMD Threadripper or Intel Server (Xeon) CPUs are fine.
We recommend AMD Threadripper as you get a larger number of cores for parallelization compared to Intel.
Threadripper also has a cost-per-core advantage and a greater number of PCIe lanes compared to the equivalent Intel part. PoH (Proof of History) is based on sha256 and Threadripper also supports sha256 hardware instructions.
SSD size and I/O style (SATA vs NVMe/M.2) for a validator
Minimum example - Samsung 860 Evo 2TB
Mid-range example - Samsung 860 Evo 4TB
High-end example - Samsung 860 Evo 4TB
While a CPU-only node may be able to keep up with the initial idling network, once transaction throughput increases, GPUs will be necessary
What kind of GPU?
We recommend Nvidia 2080Ti or 1080Ti series consumer GPU or Tesla series server GPUs.
We do not currently support OpenCL and therefore do not support AMD GPUs. We have a bounty out for someone to port us to OpenCL. Interested? Check out our GitHub.
Approximate power consumption for a validator node running an AMD Threadripper 2950W and 2x 2080Ti GPUs is 800-1000W.
Here are our recommendations for low, medium, and high end machine specifications:
AMD Threadripper 1900x
AMD Threadripper 2920x
AMD Threadripper 2950x
Consider a 10Gb-capable motherboard with as many PCIe lanes and m.2 slots as possible.
Samsung 860 Evo 2TB
Samsung 860 Evo 4TB
Samsung 860 Evo 4TB
Or equivalent SSD
Samsung 970 Pro 1TB
2x Samsung 970 Pro 1TB
4x Nvidia 1070 or 2x Nvidia 1080 Ti or 2x Nvidia 2070
2x Nvidia 2080 Ti
4x Nvidia 2080 Ti
Any number of cuda-capable GPUs are supported on Linux platforms.
We build and run on Ubuntu 18.04. Some users have had trouble when running on Ubuntu 16.04
See Validator Software for the current Solana software release.
Be sure to ensure that the machine used is not behind a residential NAT to avoid NAT traversal issues. A cloud-hosted machine works best. Ensure that IP ports 8000 through 10000 are not blocked for Internet inbound and outbound traffic. For more information on port forwarding with regards to residential networks, see this document.
Prebuilt binaries are available for Linux x86_64 (Ubuntu 18.04 recommended). MacOS or WSL users may build from source.
CUDA is required to make use of the GPU on your system. The provided Solana release binaries are built on Ubuntu 18.04 with CUDA Toolkit 10.1 update 1. If your machine is using a different CUDA version then you will need to rebuild from source.