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    [Dev] NeoScrypt GPU Miner - Public Beta Test

    Technical Development
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    • E
      einkerl last edited by

      i’ve installed the deployment kit but i do not use visual studio or have any nvidia hardware installed. Alot of the kit is not being installed.

      I’m building in win8.1 in mingw with amd sdk 2.9 and adl sdk 6. I have found a nvml.dl_ in anothers computer divers dir. Is that the one i need ?

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      • V
        vehre last edited by

        I am on Linux, so I can’t verify what I say:

        Most of all you need the includes of the NVML. The configuration process does not check for the nvml.dll anyway, because that is only tried at runtime and the initialisation is simply skipped if the .dll is not found. Furthermore, there is no need to distribute the .dll along with cgminer, because nvml.dll comes with all CUDA toolkits.

        That said: When autogen.sh aka configure reports it has found NVML support, then everything is fine for compilation.

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        • A
          Alpha Wolf last edited by

          Was anyone ever able to get 3.7.5 to work as a solo miner?

          I was unable to find a way to make it locate the wallet while trying to solo mine.

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          • E
            einkerl last edited by

            Ok found it, in windows you only need to install nvidia gpu deployment kit

            Install path is C:\Program Files\NVIDIA Corporation\GDK\nvml\

            How do i link this to MinGW ?

            Thank you

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            • D
              daimyo last edited by

              So folks, assuming the gpu miner is operational, is this going livenet?

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              • kris_davison
                kris_davison last edited by

                PXC is live with NeoScrypt now. But Feathercoin is reasonably close to announcing a fork date / block in the not too distant future. :)

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                • ?
                  A Former User last edited by

                  We are aiming towards late Oct hopefully. Maybe sooner.

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                  • Wellenreiter
                    Wellenreiter Moderators last edited by

                    if u are using pcx wallet it does not work.

                    or u must compile “updated” wallet to solo mining.

                    miner is ok and it does solo very well…

                    i have compiled unofficial ufo wallet to neo fork and it does solo without any problems.

                    Version 3.7.6a will work with the PXC wallet for solomining, too

                    Feathercoin development donation address: 6p8u3wtct7uxRGmvWr2xvPxqRzbpbcd82A
                    Openpgp key: 0x385C34E77F0D74D7 (at keyserver.ubuntu.com)/fingerprint: C7B4 E9EA 17E1 3D12 07AB 1FDB 385C 34E7 7F0D 74D7

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                    • B
                      bye2003 last edited by

                      Hi All,

                      I think it’s better to look into the current code:

                      If you compile it using CodeXL 1.5 with optimization disabled, the strachreg number is huge: more than 1500.

                      If open the optimization, the strachreg unumber is more than 400.

                      The key issue for neoscrypt is: it uses too much dynamic copy: calculating the buffer position for B and A.

                      It’s hard to make full use of the uint4 and opencl compiler nees lots of VREGS to calculate the next buffer position.

                      The second difficulty is: It uses too much local array and the result is indexing local array will hurt the opencl code’s performance.

                      Because of the above 2, the reginsers will be used very quickly and memory will spill to global memory.

                      Directly convert the c code to opencl is just the very first step, need to reduce the strachreg number to 0.

                      I have rewrite the original code and reduce the strachreg number to 372 in non-optimization mode.

                      I’m not modifying the cgminer3.7.2, but adding code into original cpuminer and simpliy it. (Current, working on Win8.1 only)

                      Without the optimization, my code on R9290 can run 95K/s and with 5 R9290, I got 440k/s on pxc.theblocksfactory.

                      The code can run 145k/s if open the optimization and the Strachreg number reduce to around 220.

                      But unfortunely, it will reproduce wrong nonce with very wired mid value. I am still testing it.

                      Like to discuss any techknowledge with all of you.

                      Thanks

                      Ralph

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                      • V
                        vehre last edited by

                        Hi,

                        I am the current maintainer of the neoscrypt cgminer. I am fully aware, that the kernel is sub-optimal. Actually the focus upto now was on getting it running and working with pools and wallets. Optimizing the kernel is done in the not so far feature. I already have some ideas.

                        Neoscrypt is especially designed to be memory (access) intensive. First of all to harden the use of ASICS. I know that the GPU has a burden with that kernel and I already had a struggle to make the neoscrpyt kernel fit for running there.

                        I haven’t done any profiling yet and it will be some more days before I have the time to do it.

                        But a question arises: You write, that you add the kernel to a cpuminer. How that? Did you also add all opencl-management code to the cpuminer? Why that double burden? I know that cgminer from a software design/ architecture perspective is bad, but adding everything anew to cpuminer seems like duplicated work.

                        Regards,

                        Andre

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                        • B
                          bye2003 last edited by

                          Hi,

                          I’m so glad to meet you here!!! :)

                          Actually, I played with original cgminer for a while, but I found it contains too much code that I do not need.

                          So this time, I just created simple opencl initialization and exection code into cpuminer, orginally neoscrypt cpuminer, then got it working.

                          (I like the neoscrypt cpuminer code, simple, easy to understand and maintain.)

                          (Sorry for the neoscrypt code, I removed lots of unnecessary code, to my understanding, compare to the original one.)

                          As the result, the code is very much customized for my R9 290 and does not have hardware monitor function.

                          For me, I want to have a very thin gpu miner for neoscrypt and easy to debug and code.

                          For neoscrypt that desired to asginst ASIC, I think it will not work that well as what people expected.

                          I write FPGA code for PTS(For fun :)) and knows the current memory operation for FPGA is not a problem and as long as people can invest it, the ASIC can be made very soon.

                          Thanks

                          Regards.

                          Ralph

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                          • E
                            einkerl last edited by

                            Does anybody have a link for the latest version 3.7.6b for windows.

                            When i build it everything goes fine, no errors but i get no accepted shares.

                            Using 13.12 with amd sdk 2.9 win8.1 mingw

                            Thanks,

                            Pete

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                            • ghostlander
                              ghostlander Regular Member last edited by

                              So this time, I just created simple opencl initialization and exection code into cpuminer, orginally neoscrypt cpuminer, then got it working.
                              (I like the neoscrypt cpuminer code, simple, easy to understand and maintain.)
                              (Sorry for the neoscrypt code, I removed lots of unnecessary code, to my understanding, compare to the original one.)

                              If the unnecessary code you’re talking about is SHA-256 and BLAKE-256, these parts may be removed. SHA-256 is for backward compatibility with Scrypt. BLAKE-256 was for testing purposes until FastKDF and BLAKE2s were implemented. Good luck with your coding. CPUminer is also a work in progress.

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                              • V
                                vehre last edited by

                                That looks quite fine. Please retry mining setting intensity significantly lower, I.e. to 8 or even less (-i 8)

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                                • E
                                  einkerl last edited by

                                  Have the same problem, compiles fine but get no accepted shares.

                                  I need lo lower intensity to 6 to get accepted and the i get 2.5kh/s or so

                                  with 3.7.5 i get about 50 kh/s with -I 11

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                                  • R
                                    raintowers last edited by

                                    Hi, anybody having the problem of 3.7.5 stops working after 3-4 hours? On win7 x64

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                                    • V
                                      vehre last edited by

                                      Hi raintowers,

                                      can you run the miner with -TDP and log the output to a file? Send me the about last 1000 lines of the file, please.

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                                      • V
                                        vehre last edited by

                                        Could you open an issue at https://github.com/vehre/neo-gpuminer/issues for every issue that occurs?

                                        This helps to keep track about problems, when they occur, and if they have been processed, resolved and when.

                                        Thanks for helping.

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                                        • R
                                          raintowers last edited by

                                          OK I’ve done it. I’m a Network Admin but been out of it for a long time. I have some tech skills but not much on the programming side. Will help as much as I can.

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                                          • V
                                            vehre last edited by

                                            Sorry for being imprecise. I am interested in the about last 1000 lines of the log, when the miner aborts on its own after running for 3-5 hours.

                                            Please add those lines to the tickets on github.

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