Vertcoin - First Scrypt N | First Stealth Address - Privacy without mixer

[BorisTheSpider]

I'm interested in mining Vertcoin with the modified CGMiner. Can anyone tell me what command I use in CGminer's start file to tell it which of my two GPUs to mine with? I have a second GPU I installed specifically to mine; so I want it to use that, not my primary GPU (which I obviously use to run my computer).

There's a device switch (the command line options for the vert cgminer and standard cgminer are the same), so running with cgminer.exe -d 1 should make it run on the 2nd GPU only (numbering starts at zero). If you had 3 GPUs and only wanted to run on the second two, you'd use -d1 -d2 etc.

[spiffcow]

I think the root conf node is in Germany, right?  So the UK pool should be better for latency, since the latency of the pool is much more important than the latency of your miner.

Root conf node is in New York.

Ah, sorry.  Kept thinking I saw something about you being in Germany, but I guess I'm thinking of someone else.

[BorisTheSpider]

OK, I have asked vertcoin to include this in the OP (and get it on the website tomorrow maybe), but I thought I'd also post here to give people a head start. Here is a tested "howto" on building the modded cgminer in linux:


For reference, the test build was done on a bare Ubuntu 12.04 LTS which had been freshly installed then updated using:

sudo apt-get update
sudo apt-get upgrade

Contributions of alternative instructions for different distros are appreciated.


First, prepare the necessary dependencies:

sudo apt-get install build-essential git libcurl4-gnutls-dev

Get the modded cgminer:

cd ~/Downloads/
git clone https://github.com/Bufius/vertminer-gpu

Get the main AMD app sdk:

http://developer.amd.com/tools-and-sdks/heterogeneous-computing/amd-accelerated-parallel-processing-app-sdk/downloads/

and get the ADL SDK

http://developer.amd.com/tools-and-sdks/graphics-development/display-library-adl-sdk/

(The ADL SDK is for temp and fan readouts in cgminer)

Manually download the above 2 files into your ~/Downloads/ folder, you cannot wget them because of the way the AMD website works, you'll
have to use a browser and manually download them.

Install the main AMD APP_SDK, make sure to decompress it in a subfolder or it untars in an untidy way:

cd ~/Downloads/
mkdir amd_sdk
mv AMD-APP-SDK-v2.9-lnx64.tgz amd_sdk
cd amd_sdk
tar zxvf AMD-APP-SDK-v2.9-lnx64.tgz
sudo ./Install-AMD-APP.sh

The installer for the APP_SDK seems to break some files, or at least it did during testing. Do the following to fix it:

cd /etc/OpenCL/vendors/

in here are two files amdocl32.icd and amdocl64.icd, you will find their contents (they are just text files) to be "libamdocl32.so" and
"libamdocl64.so" respectively. Edit them to include their full paths, so the contents of amdocl32.icd becomes "/usr/lib32/fglrx/libamdocl32.so"
and the contents of amdocl64.icd becomes "/usr/lib/fglrx/libamdocl64.so"

Make a folder to unzip ADL_SDK into (it unzips in an untidy way otherwise)

mkdir adl
mv ADL_SDK_6.0.zip adl
cd adl
unzip ADL_SDK_6.0.zip

Now copy the headers from the adl sdk into the appropriate folder in the cgminer source:

cd include
cp *.h ~/vertminer-gpu/ADL_SDK

Now we have the build environment ready, so we can:

cd ~/Downloads/vertminer-gpu

and use the included script to build with:

./buildit.sh

You now have a vertminer binary in the vertminer-gpu folder, which you can either copy to your path, or run directly.

[jasemoney]

following my own madness with the app crash while encrypting wallet
finally a .rewrite worked! gah what a pain in the butt.  then of course I couldnt send because I was using the keepass password when my hasty self had pasted my own address into it!

anyways my Verts found and im glad

[Bufius]

following my own madness with the app crash while encrypting wallet
finally a .rewrite worked! gah what a pain in the butt.  then of course I couldnt send because I was using the keepass password when my hasty self had pasted my own address into it!

anyways my Verts found and im glad

and now you know how to handle issues within all wallets if this ever occurs again

[BorisTheSpider]

following my own madness with the app crash while encrypting wallet
finally a .rewrite worked! gah what a pain in the butt.  then of course I couldnt send because I was using the keepass password when my hasty self had pasted my own address into it!

anyways my Verts found and im glad

Whew!!! Glad you got your VTC back.

[bengtåke]

Free bumps for everyone

[BorisTheSpider]

faster CPUminer for vertcoin is done, based on pooler-cpuminer.
Source only, no more changes from my side. It is my fear this will be used by botnet operators.

https://github.com/Bufius/cpuminer-vert

More speed than the existing CPU miner for Vertcoin?
-> yes, nearly 4 times faster (with AVX, AMD A4 4000@3Ghz)
    accepted: 51/51 (100.00%), 4.89 khash/s (yay!!!)

Thanks Bufius, pretty impressive performance increase.

[Bufius]

faster CPUminer for vertcoin is done, based on pooler-cpuminer.
Source only, no more changes from my side. It is my fear this will be used by botnet operators.

https://github.com/Bufius/cpuminer-vert

More speed than the existing CPU miner for Vertcoin?
-> yes, nearly 4 times faster (with AVX, AMD A4 4000@3Ghz)
    accepted: 51/51 (100.00%), 4.89 khash/s (yay!!!)

Thanks Bufius, pretty impressive performance increase.

I had some time to look into the assembler code.
But now i improve the behaviour of the GPU miner.
Unfortunately i was not able to find performance improvements yet but it is more stable. The TC calculation is better than before / improved for Vertcoin.
-> for all, check the git: https://github.com/Bufius/vertminer-gpu.git

[BorisTheSpider]

I had some time to look into the assembler code.

Hehe it's been 20 years since I did any assembler (68000 series) - what other coins have this kind of dev support!

[BorisTheSpider]

[BorisTheSpider]

[BorisTheSpider]

Come on guys, keep the momentum up - keep voting on https://cryptsy.freshdesk.com/support/discussions/topics/64057/page/1 so we can trade VTC on Cryptsy ASAP.

[BorisTheSpider]

I posted another VTC giveaway/competition at https://bitcointalk.org/index.php?topic=420854

To compete, just mine Vertcoin this weekend at: http://vtc.kilovolt.co.uk and post your VTC address along with your pool username in that thread.

[moonbat]

And there's why it's called Vertcoin:

Nice! I still think VTC is trading very cheap at CoinedUp right now - I bought some more today.

[nzgrant]

Help needed here please.

I am using the modified cgminer and when it starts up with all the same settings as I use everywhere else it errors due to Threadconcurrency being to high.  TC I usually use is 8192 but to get mining vertcoin I have to lower TC to about 4000 this drops my hash rate quite a bit.  Any thoughts please.

[XBATTO]

Help needed here please.

I am using the modified cgminer and when it starts up with all the same settings as I use everywhere else it errors due to Threadconcurrency being to high.  TC I usually use is 8192 but to get mining vertcoin I have to lower TC to about 4000 this drops my hash rate quite a bit.  Any thoughts please.

Modify your thread currency with steps of 2048. On my side, I had to increase it for my cards to be stable (too low tc reported a lot of HW errors) just try every steps and you will find the best case for your setup. Thread currency may differ not only between different cards family but also from one brand to another.
This thread could help you more on the subject : https://bitcointalk.org/index.php?topic=416572.0

[CoinManiac]

VTC up and up.

Now trading at 0.00006999/BTC

[altcoinex]

VTC Clearly where its at.

[nonny12]

Please move some mining power away from Bitcrush. 

Code:

    VTC.POOL.PM - Hashrate: 4.712 Mhash/s - Workers: 13
    LA.VERTCOIN.ORG - Hashrate: 5 Khash/s - Workers: 1
    HK.VERTCO.IN - Hashrate: 28 Khash/s - Workers: 1
    NY.VERTCO.IN - Hashrate: 2.345 Mhash/s - Workers: 6
    EU.VERTCOIN.ORG - Hashrate: 3.007 Mhash/s - Workers: 24
    VTC.KILOVOLT.CO.UK - Hashrate: 11.212 Mhash/s - Workers: 22
    VERT.BITCRUSH.INFO - Hashrate: 19.573 Mhash/s - Workers: 33