Changing the hashing algorithm

Lukey_p · 22 Jul 2014, 10:10

So, i have a question… When the move is complete, do we think CPU mining will actually be viable? Is CPU mining going to be exclusive for a while before GPU? If GPU mining neoscrypt is working on release, will anyone actually use CPU?

Just throwing it out there, be nice to have an idea, Cheers

ghostlander · 22 Jul 2014, 10:42

Not connect http, why ?

Maybe add rpcallowip=127.0.0.1, rpcuser=lizhi and rpcpassword=123 to data/testnet/phoenixcoin.conf?

j_scheibel · 22 Jul 2014, 17:19

Hi, i assume you are using Hyper-V or VMware and assigning vCPUs, At a guess, i would imagine using HT cores could contend very quickly. Are you in a position to disable HT on the CPU and assign cores only? just to see if a single core gives more that 2 threads with HT on?

Just a thought.

Luke

I wasn’t using any kind of virtual machine. I could go in to the bios and turn off the hyper threading but I can’t imagine that helping overall since you cut the overall power by half. I probably wont be in front of the computer to play with it for a day or so, regardless, I really expect this was more of a bottleneck imposed by the managing process (ie the wallet). I mean the wallet had locking issues when using pool settings with 12 or more threads . so there might be some bugs in there. however, the underlining code that does the new scrypt seems to be running ok though. (which I thought was the point of the test :) )

mirrax · 23 Jul 2014, 07:24

I don’t know if Lizhi is successfull with modification of cgminer?

But now two scenarios trouble me a little:

1st, botnets targeting Neoscrypt in CPU era

2nd, if first GPU miner will be private

Is this valid lamentation or not much?

lizhi · 23 Jul 2014, 09:30

Hi guys, I’m still not successful . I was caught in the kernel . I refer to the KECCAK, try to write some code. But no progress. :'(

I cannot write similar code for Nerscrypt in driver-opencl.c and ocl.c

#ifdef USE_KECCAK
static cl_int queue_keccak_kernel(_clState *clState, dev_blk_ctx *blk, __maybe_unused cl_uint threads)
{
        cl_kernel *kernel = &clState->kernel;
        unsigned int num = 0;
        cl_int status = 0;

        status = clEnqueueWriteBuffer(clState->commandQueue,
                clState->keccak_CLbuffer, true, 0,
                KECCAK_BUFFER_SIZE, &blk->keccak_data[0],
                0, NULL,NULL);

        CL_SET_ARG(clState->keccak_CLbuffer);
        CL_SET_ARG(clState->outputBuffer);

        return status;
}
#endif

The biggest difficulty is to write neoscrypt140707.cl, This is a binary code .

		case KL_NEOSCRYPT:
			strcpy(filename, NEOSCRYPT_KERNNAME".cl");
			strcpy(binaryfilename, NEOSCRYPT_KERNNAME);
			/* Neoscrypt only supports vector 1 */
			cgpu->vwidth = 1;
			break;

lizhi · 23 Jul 2014, 11:24

This is my project, It comes from cgminer 3.6.6

How to build:

cd /D/FTC/neoscrypt/max-cgminer-master

autoreconf -fvi

export LIBCURL_CFLAGS=-I/usr/local/curl/include

export LIBCURL_LIBS=-L/usr/local/curl/lib

CFLAGS=“-O2 -msse2” ./configure --enable-scrypt --enable-keccak --enable-neoscrypt

make

if have error information "undefined reference to `_imp__curl_easy_init’ "

you edit Makefile file , add " LIBS = -lpdcurses -lpthread -lcurl -lcurldll "

DemocraticRepublicOfDave · 23 Jul 2014, 14:19

Hi there.

Can anyone give me the github links to the “standard” neoscrypt cpuminer and wallet?

Lizhi I have your source and am studying it. I am a newbie to opengl but I have been intending for a long time to get into it.

Lizhi, am I correct in that the neoscrypt.c/.h files in the standard reference implementation?

The main issue for me is to understand the neoscrypt algorithm first.

Cheers

Dave.

slavco · 23 Jul 2014, 15:55

People, I’m following this discussion quite long and I want to ask if audit was performed on the neoscrypt algo?

ghostlander · 23 Jul 2014, 15:59

People, I’m following this discussion quite long and I want to ask if audit was performed on the neoscrypt algo?

What kind of audit?

slavco · 23 Jul 2014, 16:31

Example: What if someone manage to lower the complexity of the algorithm?
Audit in the form of public review of the algorithm by crypto comunity.

mirrax · 23 Jul 2014, 16:42

Example: What if someone manage to lower the complexity of the algorithm?
Audit in the form of public review of the algorithm by crypto comunity.

It will be opensource…

ghostlander · 23 Jul 2014, 17:16

Example: What if someone manage to lower the complexity of the algorithm?
Audit in the form of public review of the algorithm by crypto comunity.

I doubt they can get any sensible advantage, but it’s going public with the source code in a couple of days anyway. Anyone can test it until our livenets switch in 2 weeks or so.

slavco · 23 Jul 2014, 17:28

Great, I’ll check it and share it! Thumbs up!

bacobob · 24 Jul 2014, 11:31

So if i get it right the new algo in 2 weeks ;)

24 Jul 2014, 11:40

Sort of.

It essentially hangs on the gpu miner been finished.

Their will be no algo change for ftc until the GPU miner is publicly available.

Let that be clear.

Stay tuned if you want to be best dressed my friends.

kris_davison · 24 Jul 2014, 12:07

Stay tuned if you want to be best dressed my friends.

are we talking high heels and suspenders here?

24 Jul 2014, 12:19

Flobdeth · 24 Jul 2014, 12:33

MULTIKILL!

I like Calems style >:D

bacobob · 24 Jul 2014, 14:15

If I’m not mistaken, the trolls in the box are waiting for the algo change too. Seems like the buying is heating up.

how you mean ? we went down 1000 sat last night !

mirrax · 24 Jul 2014, 14:23

how you mean ? we went down 1000 sat last night !

I prefere to say 1 tick, but if you look at the long term chart, nothing really happened. Accumulation phase is continuing very well.