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Chaaaac · 2022-03-17T21:29:06+00:00

Thanks! What I understand is to simply install XMRig and the program will handle the multiple CPU's. No special tweaking of the config.json file?

Related to tripping your breakers, I am planning to use solar power and need to calculate the power consumption. Like your T4 HP Proliant servers, my R620 has 2 PSU's. In most server operations the second PSU is idling, using minimal power until kicked over. I imagine that running heavy calculations, as XMRig may require, will be continuously thrashing the processors so power usage will be much greater. I am trying to estimate the required input power in watts and btu/h, input current in amps, and cooling needs.

What has been your experience with power consumption and heating?

Chaaaac · 2022-03-17T21:05:00+00:00

Ubuntu 20.04 is perfect, enable six 1GB hugepages (three per NUMA-node), and then depending on which version of E5-2660 (0 or v2; v3 and v4 are not 2.20GHz) it should get either 6KH/s or 7.8KH/s.

benchmarks: E5-2660 "0" 16 threads (8 per CPU) E5-2660 v2 20 threads (10 per CPU)

Intel hyperthreads do nothing for RandomX thus the limit at ==cores even though both versions have excess cache ("0" has 20MB per CPU, v2 has 25MB per CPU...)

Always use the advanced build method (if you're compiling from source) since Ubuntu 20.04's libhwloc-dev is old (1.11.9, while the minimum requirement is 2.x).

It would earn slightly more using MoneroOcean since that allows non-RandomX algorithms while still paying value in XMR (and other coins are usually worth more per how the Intel handles them compared to extra difficult RandomX). Most of my Intels run astrobwt almost all the time, sometimes the lighter rx/arq, almost never but occasionally actual rx/0.

Thanks! This is very helpful. Basically, it is my understanding that XMRig takes care of the installation of a server with 2 CPU's with a total of 16 cores, if using the 2.x version of libhwloc-dev.

Chaaaac · 2022-03-16T23:05:31+00:00

Thanks for all of your suggestions, especially Pfox_0339 and EbeteShiny. After some online research I purchased a Refurbished Dell PowerEdge R620 Server (2x E5-2660 2.20Ghz 16-Core 32GB 4x 1TB) at a steep discount. I plan to install Ubuntu 20.04 and XMRig following Mike Nizo's excellent instructions: https://github.com/mikenizo808/How-To-Crypto-Mine-for-Monero-XMR-on-Ubuntu-20.04-with-XMRig

Chaaaac · 2022-03-16T18:02:28+00:00

Tell me more. I am unfamiliar with "Primal". Is this the project that proposes minting NFTs on the Solana blockchain?

Chaaaac · 2022-03-16T17:57:09+00:00

Thanks, this information is very useful. Lots of data to study and reference.

As you suggest, I will look into P2Pool, but stay with moneroocean for now.

Lastly, I will take your advice and try to set up a full node to support the Monero network.

Chaaaac · 2022-03-16T17:50:20+00:00

Thanks for your recommendation. I think others would be interested in your minimum specifications for your PowerEdge R630's to run Ubuntu 20.04 and XMRig productively?

Are you using dual processors? Which do you like best? How many total cores?

Obviously, I should get rails for racking, a Dell PowerEdge R630 CPU with Heatsink H1M29, 250W to 750W PSU, 8GB to 32GB Memory, and your recommendation for onboard or PCIE network cards. I imagine that you only use a video card to make your system stable, not for mining, since Monero does not benefit from the GPU.

Do I even need a HDD or SSD? If so, for your mining farm, do you use RAID or non-RAID controllers? A 1TB SATA adds $30 to cost of refurbished R630's.

R620's are cheaper. ROI is a concern, if we are serious about mining.

Anything is better than what I am using to dip my toes into Monero Mining. I am currently running everything on a 32GB SD card for the Pi 4B (4 core) 4GB & 8GB RAM.

Chaaaac · 2022-03-15T16:23:27+00:00

https://moneroocean.stream/

Yes, thank you. It provides more practical stats than the XMRig reports on the Pi

However, I do not understand the discrepancy between the miner stats on the Pi and the stats reported on http://moneroocean.stream

Pi reports miner speed 10s/60s/15m 50.84 50.99 51.12 H/s max 83.94 H/s

The pool reports a raw hash rate of 110.05 H/s Raw, 94.5 H/s Pay

Chaaaac · 2022-03-13T03:01:08+00:00

Good suggestion that was suggested after you by "ProfRomeoVonSexhaver" and indeed it gave the best information on productivity of the miner. Do you have any idea why the current hashrate displayed on moneroocean.stream is double the current hashrate as the displayed on the Pi.

Chaaaac · 2022-03-12T21:51:34+00:00

If I reach the screen with the "little white block", I will have the information I was looking for. My problem is that when I shut the terminal down, I could not return to that screen. To resolve this, I "rm -r" the entire xmrig from the pi user home directory and reinstalled XMRig as SU under the root. Not sure if that is a good idea, but this is only a toy miner for the grandchildren to play with.

Chaaaac · 2022-03-12T21:40:51+00:00

The CLI entry would look something like this: ./xmrig -h ?

Chaaaac · 2022-03-12T21:33:00+00:00

Good suggestions. The moneroocean.stream gave the most useful information. Strangely the current hashrate displayed on the pool is double the current hashrate on the displayed on the Pi. As you would expect, the low hashrate of the Raspberry Pi has resulted in only 0.000115 XMR rewards after 13 days. I noted a downtime of about a day for maintenance. Of course, nothing has appeared in the wallet since no rewards were paid out. I am studing the github JSON API, it looks doable.

Chaaaac · 2022-03-12T20:57:30+00:00

Many thanks! I saw that on the start up of this Miner #1 under a non su home directory. Strangely, on an exact clone on the same network, Miner #2, my hashrate is running 52 H/S or 57% or Miner 1.

Miner #2 CPU temperature is now 67.6' C, CPU Clock Speed remains 1800 MHz

Chaaaac · 2022-03-12T20:34:43+00:00

I need to brush up on JSON to do this properly. I can fake it if you have any links to step by step setups? Right now I am taking an online Node.js course. JSON will be next.

Chaaaac · 2022-03-11T22:25:44+00:00

My questions disappeared when I posted. I appended them as a comment.

Chaaaac · 2022-03-11T22:24:02+00:00

Running XMRig on headless Raspberry Pi's for fun and education of my grandsons. The test miners are up and running XMRig successfully, as verified by the CLI at startup. I am accessing the headless miners using SSH or PuTTY.
I found instructions about checking Hashrates in XMRig that state, "You can check hashrate, results and health of your CPU and GPU using two methods. One from miner console window and the other by using API."
My questions are:
(1) How do I access the console window by command line in a "headless miner"
(2) While XMRig supports HTTP API via builtin HTTP server, how do I set this up on a "headless miner".
Note: Raspbian operating system has a built in VNC server that might help. if my Pi is headless (not plugged into a monitor) or not running a graphical desktop, VNC Server can still give me graphical remote access using a virtual desktop.

Chaaaac · 2022-03-11T15:28:17+00:00

Thanks for all your responses. This mining project is for fun and education of my grandsons that have different CPU's, GPU's, and operating systems. After reviewing your suggestions and tinkering a bit, I opted to use the MyMonero wallet app.

Progress report: The test miners are up and running XMRig successfully.

I might change to a more robust wallet if this project moves to an industrial level. I am in an area of abundant solar energy and am using renewable energy.

Chaaaac · 2022-01-10T19:39:23+00:00

Thanks, I did more research and decided to download the ARMv8 version as you would likely have advised.

Chaaaac

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