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Author Topic: [XPM] [ANN] Primecoin High Performance | HP14 released!  (Read 397536 times)
1l1l11ll1l
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August 02, 2013, 02:38:00 AM
 #1461

I'm about to start renting dedicated servers by the dozen. I think that I found n4ru's special place...

Supposing a GPU miner comes up next week, how could I monetize the servers?




Care to share your settings?

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Trillium
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August 02, 2013, 02:59:28 AM
 #1462

Is Primecoin pretty much cpu limited, or does memory speed play a big role as well?

My tests show that memory is not very important for primecoin. I believe its mostly CPU speed and cpu-cache that are important. However, inadvertently on most high end systems with fast processors you will also have fast RAM, especially true of gaming systems (less so on servers but they are different story because of ECC RAM).

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LlamaMaster
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August 02, 2013, 03:42:07 AM
 #1463

Is there any way to test mining performance with certain parameters aside from just waiting and seeing how many blocks you get?  I don't have a server farm, so it seems impossible for me to tell if changing a setting makes anything better.
blackboy
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August 02, 2013, 03:58:49 AM
 #1464

I'm about to start renting dedicated servers by the dozen. I think that I found n4ru's special place...

Supposing a GPU miner comes up next week, how could I monetize the servers?



Care to share your settings?

I'm using dedicated servers from server4you with hp8 and ecoinomist instrumentation scripts. I think n4ru was using ovh.co.uk servers. I suspect that he rented a couple thousand of the cheapest servers. I didn't want to manage so many servers so I went bigger. I have another script to move immatures and a central wallet. I left all the settings at their default.


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watchzerg
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August 02, 2013, 06:41:31 AM
 #1465

hi,mikaelh. Since you joined the primecoin devteam, Will this high performance version merge into the trunk?
Tamis
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August 02, 2013, 09:20:53 AM
 #1466

Does hp8 compile with only 256mb of ram ?
idny
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August 02, 2013, 09:35:30 AM
 #1467

I'm about to start renting dedicated servers by the dozen. I think that I found n4ru's special place...

Supposing a GPU miner comes up next week, how could I monetize the servers?



Care to share your settings?

I'm using dedicated servers from server4you with hp8 and ecoinomist instrumentation scripts. I think n4ru was using ovh.co.uk servers. I suspect that he rented a couple thousand of the cheapest servers. I didn't want to manage so many servers so I went bigger. I have another script to move immatures and a central wallet. I left all the settings at their default.



This script sounds interesting. I'll have to hunt it down.
I was moving coins manually like a noob!
Lyddite
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August 02, 2013, 09:45:58 AM
 #1468

Does hp8 compile with only 256mb of ram ?

I noticed that at a certain point, probably when compiling main.cpp, compilation would fail due to lack of memory. The compiler was using about 600 Megs at the time believe.
The error from gcc didn't say anything about memory but dmesg showed a problem.

Code:
Out of memory: Kill process 10876 (cc1plus) score 949 or sacrifice child
Killed process 10876 (cc1plus) total-vm:615808kB, anon-rss:578368kB, file-rss:776kB

If you set up some swap space, perhaps a half a gig, hp8 should compile without problem.  I believe the extra memory is only needed for compiling main.cpp.

- Lyddite -
mikaelh
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August 02, 2013, 11:26:53 AM
Last edit: August 02, 2013, 01:32:28 PM by mikaelh
 #1469

hi,mikaelh. Since you joined the primecoin devteam, Will this high performance version merge into the trunk?

Well, the short answer is no. I will explain some of the reasons here.

Using GNU MP is a bit cumbersome because of the licensing. GMP is licensed under LGPL while Primecoin is licensed under its own conditional version of the MIT/X11 license. That means we would be forced to include GMP as an external library via dynamic linking. That would become a maintenance burden in the future when external miners are developed.

We also want the stock miner to be a good reference miner. That means we want to keep it simple so that people can see the math behind the algorithm. That doesn't mean there won't be any more optimizations added to the stock miner. I will probably port some optimizations from my miner to the stock miner. However, the stock miner is unlikely to be fully competitive with other miners.

I'm going to keep maintaining the high performance version for as long as it stays relevant. When we have reasonable external miner options, I will eventually stop developing my high performance tree.
Tamis
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August 02, 2013, 11:32:13 AM
 #1470

I was thinking that swap should do it.

Thx Lyddite !
blackboy
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August 02, 2013, 12:26:01 PM
 #1471

Does hp8 compile with only 256mb of ram ?

No. Compile in a 1 gig of ram machine and then move the compiled script to your 512mb one.

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one4many
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August 02, 2013, 01:27:36 PM
 #1472

No tricks. 500 8-core opteron servers running mikhaels hp8.
I simply took the best scripts from this thread and used some recommendations from members.
Cloud you please share your primecoin.conf settings ... somehow is my 8-core Opteron processor hugely under-performing compared to my XEON quard core. :-/

Thx!

     one4many
blackboy
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August 02, 2013, 01:32:57 PM
 #1473

No tricks. 500 8-core opteron servers running mikhaels hp8.
I simply took the best scripts from this thread and used some recommendations from members.
Cloud you please share your primecoin.conf settings ... somehow is my 8-core Opteron processor hugely under-performing compared to my XEON quard core. :-/

Thx!

     one4many

Just overclock it. Use mikhael's Linux build so the system uses the most adequate library for your processor.

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gigawatt
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August 02, 2013, 01:56:13 PM
 #1474

Does hp8 compile with only 256mb of ram ?

No. Compile in a 1 gig of ram machine and then move the compiled script to your 512mb one.

Sounds like somebody needs to make a swapfile.

This will make a 1GB swapfile so you can compile on < 512mb RAM.

Code:
sudo dd if=/dev/zero of=/swapfile bs=64M count=16
sudo mkswap /swapfile
sudo swapon /swapfile

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one4many
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August 02, 2013, 01:58:13 PM
 #1475

No tricks. 500 8-core opteron servers running mikhaels hp8.
I simply took the best scripts from this thread and used some recommendations from members.
Cloud you please share your primecoin.conf settings ... somehow is my 8-core Opteron processor hugely under-performing compared to my XEON quard core. :-/

Thx!

     one4many

Just overclock it. Use mikhael's Linux build so the system uses the most adequate library for your processor.
Hmmm .... I get PrimesPerSEc: 5864  ... Chainspermin: 4 
Default settings .. no changes to conf file.

     one4many
gigawatt
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August 02, 2013, 02:02:10 PM
 #1476

You could also use your wallet until addresses diverge or increase the keypool.

Could you elaborate on this?

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Pt0x
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August 02, 2013, 02:12:45 PM
 #1477

When mining on multiple machines you can just use the same wallet on each of them can't you? I assume in that case, any block found would show as a deposit to the wallet on all of the machines at the same time.

Yep.. there's a script to move immature blocks around to have them on a central wallet. You could also use your wallet until addresses diverge or increase the keypool.

where I can find this script?

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blackboy
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August 02, 2013, 02:22:24 PM
 #1478

You could also use your wallet until addresses diverge or increase the keypool.

Could you elaborate on this?

primecoind --daemon --keypool=10000

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gigawatt
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August 02, 2013, 02:30:09 PM
 #1479

You could also use your wallet until addresses diverge or increase the keypool.

Could you elaborate on this?

primecoind --daemon --keypool=10000

I get that part.  What did you mean about the addresses diverging?  As long as each node has the exact same wallet, that shouldn't be a problem, correct?

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notme
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August 02, 2013, 02:36:14 PM
 #1480

You could also use your wallet until addresses diverge or increase the keypool.

Could you elaborate on this?

primecoind --daemon --keypool=10000

I get that part.  What did you mean about the addresses diverging?  As long as each node has the exact same wallet, that shouldn't be a problem, correct?

The keypool size determines how many addresses are in the wallet.  When you share a wallet across computers, the wallets will diverge after the keypool that they have in common runs out.

https://www.bitcoin.org/bitcoin.pdf
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