HiveOS which is what I was using before mmpOS allowed me to access the rig directly from the client screen. That was why I expected to see something similar with mmpOS.

I do have a SSH windows client so I will try to use that but I have a couple of questions.

1. How can I find the IP address of the rig I want to SSH into?
2. Is there a port number needed along with the IP address?
3. I assume that Rig Name and Password I used in creating the Rig is what I use to log in with
4. Any help in where I can find the various mmpOS logs is appreciated or any other info on the rig that is useful

Hopefully no one here is mining in Texas on a non-fixed electric contract.

With the freeze and blackouts hopefully no one is on Griddy or any other variable rate electric plan.

Griddy customers face $5,000 electric bills for 5 freezing days in Texas
https://www.dallasnews.com/business/2021/02/20/griddy-customers-face-5000-bills-for-5-freezing-days-in-texas


I am on New Power's 36 month fixed price plan at a total rate (all costs) of 9c per KWh. I also have my bill charged to a USbank Visa card that gives me back 5%. I pay the card in full so no interest or fees are ever paid. So that 9c turns into 8.55c per KWh.

First off fantastic OS. mmpOS was so simple to setup my two rigs with seven total Vega 56's.

Now my question is there any way to remotely examine the log files on the rigs remotely?

I have looked everywhere on the miner management screen (Dashboard, Rigs, etc) but I cannot see any options to examine the actual logs on the rigs themselves.

I am going to assume that these are the original Westmere Microarchitecture from 2011 as you didn't state V2, V3 or V4.

Intel Xeon E7-4830 specifications
http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E7-4830%20AT80615007089AA%20(BX80615E74830).html

Also assuming that you are looking to mine RandomX (and variants).

The L2 cache on the Xeon E7-4830 limits it to the maximum of 8 threads.

RandomX needs 256kb of L2 cache and 2mb L3 cache per mining thread.

Xeon E7-4830 has:
Level 2 cache size: 8 x 256 KB <-- this limits the Xeon E7-4830 to only 8 threads
Level 3 cache size: 24 MB

You might want to look at upgrading to better (more cores) or faster ones for more performance.

The best way to judge performance differences between processors is to note the Maximum turbo frequency while using all the cores:

So using the Xeon E7-4830 is: 8 (cores) times 2.267 GHz equals 18.136 which will be the BASE for reference

now comparing  to:

Xeon E7-4850: 10 (cores) times 2.133 GHz equals 21.33 or 17.6% faster
Xeon E7-4860: 10 (cores) times 2.400 GHz equals 24 or 32.3% faster
Xeon E7-4870: 10 (cores) times 2.533 GHz equals 25.33 or 39.7% faster

Intel Xeon E7-4800 microprocessor family
http://www.cpu-world.com/CPUs/Xeon/TYPE-Xeon%20E7-4800.html

You may also want to consider the E7-8800 series as they are plug compatible with the E7-4800 series, The HP DL580 servers can use the 8800 processors. Be sure to check if your system can use the 8800 processors.

Intel Xeon E7-8800 microprocessor family
http://www.cpu-world.com/CPUs/Xeon/TYPE-Xeon%20E7-8800.html

Xeon E7-8837: 8 (cores) times 2.800 GHz equals 22.4 or 23.5% faster
Xeon E7-8867L: 10 (cores) times 2.267 GHz equals 22.67 or 25% faster
Xeon E7-8870: 10 (cores) times 2.533 GHz equals 25.33 or 39.7% faster

New Numbers using XMRig 5.1.0:


This is what I have measured for four Dell R815 Servers on one PDU.Two with quad 6348 and two with quad 6378 Opterons.

    47318 H/s for RandomX

    3483 watts (14.1 Amps * 247 VAC) avg of 871 watts per server measured at the panel.9.0c per KWH

30000 * 47318 * 2.1 * 53.39 / (3483  * 0.090) = 507.7 MH/s


So with the current Monero World Hash Rate at 790 MH/s these servers are unprofitable.

https://2miners.com/xmr-network-hashrate


I will be mining on them for about 12 more hours because I need 17% more to get one more coin.

Then they will be powered off until Monero price recovers for them to become profitable. If that doesn't happen I will sell them off.

Opteron Miners be sure to update to XMRig 5.1.0 from 5.0.1.

It has improved my hash rates by:


Gain of 7.4% for a Dell R815 Server with 4x Opteron 6378's. Hash Rate goes from 11270 H/s (5.0.1) to 12104 (5.1.0)


Gain of 8.0% for a Dell R815 Server with 4x Opteron 6348's. Hash Rate goes from 10696 H/s (5.0.1) to 11555 (5.1.0)


Gain of 9.7% for a Supermicro Server with 2x Opteron 6376's (OCed +15%). Hash Rate goes from 6056 H/s (5.0.1) to 6643 (5.1.0)

The real problem is the shi**y price of Monero itself.

If the fork doesn't get the price going back up even those systems you mentioned will only be making pennies per day.

I am having serious doubts that the Dell R815's will be profitable in the long term.

u/tevador put together "The profitability of RandomX" calculations for RandomX Hash Rate for profitability of a given rig:

https://www.reddit.com/r/MoneroMining/comments/dxp2h9/the_profitability_of_randomx


-------------------------------------------------------

Using today's price of $51.92 XMR
https://bitinfocharts.com/monero

    This is what I have measured for four Dell R815 Servers on one PDU.Two with quad 6348 and two with quad 6378 Opterons.

    43890 H/s for RandomX

    2880 watts (12 Amps * 240 VAC) avg of 720 watts per server measured at the panel.9.0c per KWH


30000 * 43890 * 2.1 * 51.92 / (2880 * 0.090) = 553.8 MH/s

So if the hash rate for RandomX goes to the 1.3 GH/s that is estimated when it settles after the fork these Dell R815's will again be turned off.

I would then only be mining on my various Dell T5600/T7600 Workstations.

I would also look into an electric plan where electricity is free for nights or weekends to mine on the Dell R815's.

Or I would just resell the Dell R815's for a slight profit as most of them only cost me around $250 each.

*** Notice *** Opteron users be sure to use TurionPowerControl for maximum Hash Rates

Instructions for installing, Configuring and running TurionPowerControl

See my post # 984
https://bitcointalk.org/index.php?topic=1955358.msg52644475#msg52644475

If you do not have TurionPowerControl and configured with the "-psmax 1" command your hash rate will be lowered by about 14% from what it would be.

Probably No.

That CN/R 6866.8 hash rate is for four Dell R815 Servers. Two with quad 6348 and two with quad 6378 Opterons.

I am using the latest XMRig v5.0.1 software found here:
https://github.com/xmrig/xmrig/releases/tag/v5.0.1

On the two Dell r815 Servers with the quad 6348 Opterons I let XMRig do the thread configuration which uses all 12 cores in each Opteron or 48 threads total per server.

On the two Dell r815 Servers with the quad 6378 Opterons I initially let XMRig do the thread configuration (64 threads). Then after exiting XMRig I edit the config.json file to use 14 cores in each Opteron or 56 threads total per server.

As I stated earlier on the Dell R815 Server with the quad 6378 Opteron's it is best to disable one core per NUMA node to gain an additional 1% in hash rate while very slightly lowering power consumption and processor heat. This is done by first running XMRig to that it fills in the CPU core options in the config.json file. Then exiting XMRig and editing the (CN and RX) sections to remove one core from each of the eight NUMA nodes.

I reformat the very long CN and RX CPU sections [0, 1, 2, ... 61, 62, 63] to this:

[0, 1, 2, 3, 4, 5, 6, 7,
 8, 9, 10, 11, 12, 13, 14, 15,

...

48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63]

that way I can easily see each NUMA node of 8 cores. I then delete the last entry on each line. Be sure to leave the trailing comma in the first seven lines and on the last line remove the ", 63" but leave the "]" bracket.

Now when you run XMRig it will use 56 cores when mining.



No the Dell R815 Servers cannot be overclocked.




More than likely you need to first upgrade the BIOS in the HP DL385 G7 so that it can recognize the 6300 series Opterons.

After searching I have found these links to BIOS upgrades:

HPE DL385 G7 Opteron 6300 compatibility
https://community.hpe.com/t5/ProLiant-Servers-ML-DL-SL/HPE-DL385-G7-Opteron-6300-compatibility/td-p/7068866#.XdgYb2fDvxQ


HPE ProLiant DL385 G7 Server
Drivers and Software
Bios

** CRITICAL ** System ROMPaq Firmware Upgrade for HP ProLiant DL385 G7 (A18) Servers (For USB Key-Media)

Here is the direct link:

https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_8ca080bdbac14279b2461810ee

Bios Version is : 2018.03.14(A)(24 Apr 2018)

Click the download button to download the SP99289.exe (3.0 MB) file

Installation Instructions:

Installation:

1. Obtain a formatted USB Key media.

2. Download the SoftPaq to a directory on a system running Microsoft Windows 2000, Microsoft Windows XP, Microsoft Windows Vista, Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, or Microsoft Windows Server 2008 R2 and change to that directory.

3. From that drive and directory, execute the downloaded SoftPaq file: Simply double click on the SPxxxxx.exe file and follow the installation wizard to complete the SoftPaq installation process. At the end of a successful installation of the SoftPaq a web page will automatically appear to provide you with the different methods for restoring and/or upgrading the firmware on the system.

4. After the USB Key is created, you may delete the downloaded file if you wish.

5. Insert this USB Key into the USB Key port of the system to be updated and power the system on to boot to the USB Key.

Dell R815 Ubuntu 16.04 Desktop Installation Steps:

Go here to get Ubuntu 16.04 LTS
http://releases.ubuntu.com/16.04

Download the 64-bit PC (AMD64) desktop image
http://releases.ubuntu.com/16.04/ubuntu-16.04.6-desktop-amd64.iso

After downloading has completed: install it onto a USB stick so that you can boot from it

I use the free Rufus program: https://rufus.ie
https://github.com/pbatard/rufus/releases/download/v3.8/rufus-3.8.exe

Now put the Ubuntu USB stick into the USB port on the server front.

Now power up the server and when prompted press F11 to boot from the USB stick that has Ubuntu 16.04 LTS on it.

In the F11 boot menu select "Hard Drive" and then select the Front USB drive.

--------------------------------

You should now see Ubuntu booting.

When it has completed booting click on "Install Ubuntu"

On the next screen check mark the "download updates while installing Ubuntu" line.

On the "Installation Type" screen select "Something Else"

Select/Highlight "/dev/sdb" and click "New Partition Table"

Now Select "Free Space" and click the "+": Enter 975MB and "Swap Area"
Now again Select remaining "Free Space" and click the "+": "EXT4 Journaling File System" and "Mount Point" is "/" then continue

You will see that two partitions will be created: One is the Swap the Other is "EXT4" where everything else is installed to.
If you see more partitions go back and correct it. If you don't then sometime in the future you will run out of disk space.

Now continue with the installation.

Select your correct Time Zone and Keyboard Layout.

On the setup screen I do the following:

I leave "Your Name" blank

"Computer Name": R815-1
For each additional R815 I configure I change this to R815-2, R815-3, etc

Username: miner

I use logon name of: miner
If you use a different name then other commands will need "miner" changed to whatever you name it to.

Password: xxxx

Password is whatever you want and can remember: I use "xxxx" for simplicity.

I let the system autologon when booting

When Installation completes: reboot
Be sure to remove the installation Ubuntu USB stick from the server front USB port.

Wait for the initial boot of Ubuntu from the internal USB drive to complete.

Now do all Updates.

Either wait for the Update Icon to appear on the left side of the screen (in about 5 minutes) or force updates with the following commands:

T to open a terminal window then do these commands:


When Updates have completed then do these command form a terminal window


Shell in a box: https://www.tecmint.com/shell-in-a-box-a-web-based-ssh-terminal-to-access-remote-linux-servers
Usage: https://blog.homeatcloud.com/manuals/the-shellinabox-tool

Midnight Commander (MC): https://www.linode.com/docs/tools-reference/tools/how-to-install-midnight-commander
How to use MC: http://linuxcommand.org/lc3_adv_mc.php

Now Get the Server IP address with
    

Now do the following from a from a remote browser (FireFox, Chrome. Internet Explorer) on your local network https://:4200

This bring up a Shellinabox session.
Using Shellinabox simplifies setup as you can copy and paste from this guide using a right mouse click in the Shellinabox browser window.

-----------

Install R384 Nvidia Driver - see if it already installed


Remove older Nvidia driver

If your graphic is supported, you can go ahead and remove all previously installed Nvidia drivers on your system. Enter the following command


Add the graphics drivers PPA

Let us go ahead and add the graphics-driver PPA -


And update


Install (and activate) the latest Nvidia graphics drivers.
Enter the following command to install the version of Nvidia graphics supported by your graphics card

// Check here for Linux Nvidia Drivers

https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa


// Check launchpadstatus here

https://twitter.com/launchpadstatus?lang=en


// Quadro 600


Reboot your computer for the new driver to kick-in.


You can check your installation status with the following command


If there is no output, then your installation has probably failed.
It is also possible that the driver is not available in your system's driver database.
You can run the following command to check if your system is running on the open source driver nouveau. If the output is negative (blank) for nouveau, then all is well with your installation.


Prevent automatic updates that might break the drivers by blocking minor version updates. Enter the following command


----

Disable graphical interface startup. I like to see the boot messages rather than a screen with a solid color and no indication it is doing anything for a long time.

I use Midnight Commander (mc) when I say edit. Use sudo mc if editing system files


// (Ubuntu 16.04) disable the boot splash


    edit /etc/default/grub


remove 'quiet' and 'splash' from GRUB_CMDLINE_LINUX_DEFAULT line and add nomodeset

so, assuming you have no other boot parameters, it would look like

    GRUB_CMDLINE_LINUX_DEFAULT="nomodeset"

save that, then run


// Reboot System

This section is for Dell R815 Hardware configuration and BIOS Settings:

I install an inexpensive ($10) Quadro 600 graphics card in each server because the built-in Server GPU has a limit of 1024x768 resolution which is painful to my eyes. Some of the instructions that follows are necessary for using the Quadro 600. If you use another GPU then you will need to change those steps to reflect the GPU you choose.

Initial Dell R815 Server Hardware steps:

Open Server top and install a 16GB USB stick inside at the front left side where there is an internal USB port.
Install Quadro 600 graphics card.

I remove any RAID card and SAS cables as they are not needed and burn unnecessary power while mining.
Also remove any other PCIe cards as they are also unnecessary.

Initial setup for the Dell R815 Server:

Hook up display to the Embedded Video Controller port as the Quadro 600 is not set to display the BIOS screen until a setting in the BIOS is changed.

Boot server and press F2 to enter BIOS when the screen stating "Press F2 to Enter BIOS" is seen.
You should see that line change to "Entering BIOS" when F2 has been pressed.

Note the BIOS version. All my Dell R815 Servers are on Version 3.2.2
If you have a newer version that should also be fine.

Bios Version 3.2.2 is located here:
https://www.dell.com/support/home/us/en/04/drivers/driversdetails?driverid=jf8yh

BIOS settings should be:

--------------------------------------

Under Memory Settings Screen

(On each reboot Memory is tested) When you are satisified that memory has been tested enough then change to Disabled


--------------------------------------

Under Processor Settings Screen


--------------------------------------

Under Integrated Devices Screen


Note on Reboot the the Embedded Video Controller is disabled so switch the monitor cable to the Quadro 600 (or other GPU) you installed.

--------------------------------------

Under Power Management Screen


--------------------------------------

Now Press to exit the System Setup program
and select Save Changes and Exit


Don't forget that on Reboot the the Embedded Video Controller is disabled so switch the monitor cable to the Quadro 600 (or other GPU) you installed.


On each reboot Memory is tested. When you are satisified that memory has been tested enough then change:
System Memory Testing: Disabled

--------------------------------------

I use Ubuntu 16.04 Desktop which is FREE.

I will follow up this post with detailed instructions for Ubuntu 16.04 Desktop installation.

On the Dell R815's I put in a 16GB USB stick installed inside at the front left side where there is an internal USB port.
On the HP DL580's I use a cheap 60GB 2.5" SSD installed inside.

I also install an inexpensive ($10) Quadro 600 graphics card in each server because the built-in Server GPU has a limit of 1024x768 resolution which is painful to my eyes.

See here for cheap reliable and fast 16GB USB sticks:
https://bitcointalk.org/index.php?topic=1955358.msg51847827#msg51847827

17 days until Monero forks to RandomX.

I am pumped.

I am currently in the process of wiring another 20 AMP 240 VAC circuit to attach my third 16 AMP PDU.
This is needed for my third set of four Dell R815 Servers.

My garage mining setup will contain twelve Dell R815 Servers with a mixture of quad 6348 & 6378 Opterons.
Also a single SuperMicro Server with dual 6376 Opterons overclocked to 3 GHz.

This is what I have measured for four Dell R815 Servers on one PDU.
Two with quad 6348 and two with quad 6378 Opterons.

On the current CN/R algorithm:

6866.8 H/s
2880 watts (12 Amps * 240 VAC) avg of 720 watts per server measured at the panel.
9.2c per KWH

This setup would be mining for a loss of $4.18 a day which is why these have been powered off and will stay off until the November 30th fork.

https://www.cryptocompare.com/mining/calculator/xmr?HashingPower=6866.8&HashingUnit=H%2Fs&PowerConsumption=2880&CostPerkWh=0.092&MiningPoolFee=1.0

The same same four servers produce 43890 H/s for RandomX.

I will post the RandomX numbers, Hash Rate, Power, and hopefully Profit for this setup after the fork.

Good luck everyone.

FYI: I am using XMRig for my RandomX miner. You can set it to 1% donation or 0% if you compile from the source

https://github.com/xmrig/xmrig/releases/tag/v5.0.0

XMRig 5.0.0, stable release, unified 3 in 1 miner, CPU+OpenCL+CUDA
https://www.reddit.com/r/MoneroMining/comments/dvv637/xmrig_500_stable_release_unified_3_in_1_miner

I see two issues:


The issue is that the reported and usable L3 Cache is 48.0 MB whereas it should be 64.0 MB.

Each AMD Opteron 6378 has 16MB (2x 8MB) of L3 Cache so four of them has 64MB of L3 Cache:
http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206378%20-%20OS6378WKTGGHK.html

Look for an option in the BIOS (probably in the CPU/Processor section) that says something like "HT Assist" or "Probe Filter Lookup". If that is enabled then it steals 2MB L3 Cache from each NUMA node or 4MB L3 from each 6378 Opteron which reduces the L3 Cache per 6378 Opteron from 16MB to 12MB and 12MB time four is the 48MB you are seeing.

So find that "HT Assist"/"Probe Filter Lookup" option, disable it, reboot and retest.

If you don't see that setting make sure you are on the latest BIOS version for your motherboard.


-------------------------------------------------------------------------------------------------------------------




By selecting the coin to be monero you are effectively mining the current algorithm CryptonightR and not RandomX.
You need to reset coin back to null in the config.json file to test RandomX.

RandomX has specific limits in that it needs 256KB L2 cache and 2MB L3 cache for each mining thread.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2620.html

Each Xeon E5-2620 processor has: 6 real cores and 6 HT cores and can run twelve threads.

Each Xeon E5-2620 has 6 x 256 KB 8-way set associative L2 Cache and 15 MB 20-way set associative shared L3 cache

The 6 x 256 KB 8-way set associative L2 cache limits you to mining on the 6 real cores and not the HT cores.

The screenshot you posted mining RandomX shows that all six cores of both Xeon E5-2620 processors are used for mining (12 real cores) but the 12 HT cores are idle. If you actually have no other tasks running that will show 50% being utilized and that is correct as 12/24 equals 50%. Trying to use more cores for mining will actually decrease your hash rate.

https://drive.google.com/file/d/1M3u24W8GCo8yLrGZvFvFjmcr3T1SKBCP/view

The only way to improvement performance is to replace the E5-2620 Xeon's with something that has more real cores or is faster.

I have tested dual Sandy Bridge E5-2640 and E5-2670 processors in a Dell T5600 Workstation and these are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

Dual E5-2690, 16 threads, 7033 H/s, Power currently not measured, this also is a Dell T7600 Workstation

I recently picked up a pair of E5-2640 Xeon's for only $27.06 on eBay.

Also in the recent past I have picked up:

3x E5-2643 Xeon's for $31.31 or $20.88 for a pair
10x E5-2670 Xeon's for $387 or $77.40 for a pair
10x E5-2670 Xeon's for $511 or $102.20 for a pair

Unless you have compiled XMRig from the source:


the "--donate-level 0" will default to Donate Level 5%. The lowest you can go is 1% so that would be:


Also I do not set


If the system is idle then all cpu cores that you have configured for mining will be going full out even without setting cpu-priority. If you do something like web browsing then that will steal some CPU cycles from mining. I worry if you set cpu-priority to 5 (highest) you may not be able to run other applications because they won't have enough cpu cycles to start or if they do start they may be sluggish.


If they are smart they will.

As I stated earlier I am at a loss in why anyone is currently mining LOKI because the numbers I plug in even with free electricity you will be losing money mining it (because of the pool fee).

It looks like I was wrong as the only difference between Loki (RandomXL) and XMR (RandomX) is the RandomX program size (LOKI is larger).


https://www.reddit.com/r/LokiProject/comments/ceas1a/randomxl_mining

LOKI is a very very very minor coin vs Monero (XMR).

LOKI price $0.315
Monero price: $63.555

https://minerstat.com/miner/xmrig

RandomXL produces hash rates double what RandomX will produce so 52M H/s of RandomXL is equivalent to 26M H/s of RandomX.

I for one do not believe you can extrapolate what you see mining LOKI to Monero (RandomX).

I am also at a loss in why anyone is currently mining LOKI because the numbers I plug in even with free electricity you will be losing money mining it (because of the pool fee).

Even if you had electricity at 1 cent per KWh you will lose 5 cents a day with an EPYC 7742 using 225 watts and producing 77464 H/s of RandomXL.

RANDOMX CPU BENCHMARKS
https://randomx.monerobenchmarks.info/index.php

Loki mining calculator
https://minerstat.com/coin/LOKI

Great chart showing all the coins that XMRig CPU miner can mine
https://minerstat.com/miner/xmrig

As for your question: Do you think you will make any money mining XMR RandomX with servers?

Yes I do for Monero (XMR) but if I am wrong I will be able to resell the servers I have bought for a profit so my risk is minimum.