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    Changing the hashing algorithm

    Technical Development
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    • ?
      A Former User last edited by

      A:2736 R:25 HW:0 WU:4.2/m @4.44Kh/s

      No errors. This was running overnight. nVidia GeForce GT 630M

      defultsetx DISPLAY 0
      setx GPU_MAX_ALLOC_PERCENT 100
      setx GPU_USE_SYNC_OBJECTS 1
      
      cgminer.exe --neoscrypt --worksize 256 --thread-concurrency 300 -I 8 --gpu-memclock 1000 --gpu-engine 1000 -o http://pool.ftc-c.com:19328 -u TD8nGRpSxHyrw327LR1kJxwsin21GcyDwF -p x --fix-protocol
      

      10a29ec34de9412e1e519e51efc8424cdc998d7b

      Also, Who was this? Spiked to 33,558 h/s

      a11b3754b61a55dad2ec5f6a4b31f430fddfe3f3

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      • ?
        A Former User last edited by

        What does WU:x mean?

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        • T
          tmuir12 Regular Member last edited by

          NeoscryptGPU.png

          Gigabyte Gv-R7870C-2GD 7870 PCI-E

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          • T
            tmuir12 Regular Member last edited by

            What does WU:x mean?

            WU:   The Work Utility defined as the number of diff1 equivalent shares / minute
            

            http://bitcoin.stackexchange.com/questions/19260/deciphering-cgminer-interface-in-terminal

            So I’m guessing the higher the number the more efficient your miner is

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            • ?
              A Former User last edited by

              Ah nice. Cheers.

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              • lizhi
                lizhi last edited by

                Which version Catalyst is best ?

                my 7850 ,7970 are HW ,not work.

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                • T
                  tmuir12 Regular Member last edited by

                  I think 13.4 is the best, but 14.4 for me was only 1% or 2% slower so not a huge difference.

                  I was running 8.something and that would crash cgminer.

                  What version are you currently using?

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                  • lizhi
                    lizhi last edited by

                    I use AMD 14.4 Catalyst + SDK 2.9 .

                    Can you mine with AMD 13.4 Catalyst + SDK 2.8 ?

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                    • T
                      tmuir12 Regular Member last edited by

                      I could mine with just AMD 13.4, I didn’t have SDK installed at all, although I now have installed SDK 2.9.

                      I have a Gigagbyte HD7870 GPU, running Windows 7 64 bit

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                      • F
                        Flobdeth Regular Member last edited by

                        There have been known mining issues with 14.4 since release, 13.12 max on windows.

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                        • lizhi
                          lizhi last edited by

                          The best choice:

                          AMD 13.12 Catalyst + SDK 2.9

                          AMD 7850 CARD =48Khash/s ;

                          AMD 7970 CARD =16Khash/s ;

                          cgminer.exe --neoscrypt --fix-protocol -I 12,12 --worksize 256,384 --thread-concurrency 8192,8192 --shaders 1024,2048 -g 1 -o http://pool.ftc-c.com:19328 -u TRsuTqxAMKZNvC7JzGNgvM49rkQNcxqjhi -p x
                          

                          neo105.jpg

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                          • D
                            daimyo last edited by

                            I gave it a try last night on my nVidia 550M, Win7 and I got max 8 khs. Mostly default settings, --worksize 256 -I 13, no overclock. Driver version 294.10 - a bit old

                            76C gpu temp -> not bad

                            I think it can reach up to 10 khs with some tweakin

                            This is what i get with -I 14

                            Clipboard01.jpg

                            Limitation of the gpu?

                            And whats the logic 7850 to perform 3 times faster than 7970?

                            Do you guys expect the stratum implementation to raise the productivity significantly?

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                            • T
                              tmuir12 Regular Member last edited by

                              Try dropping the intensity I am using 11 on my 7870, on I 12 it drops performance by half, and on 14 I would probably only get around 8 too.

                              For normal Scrypt I 12 is the sweet spot for me but 11 is required for Neoscrypt

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                              • kris_davison
                                kris_davison last edited by

                                Is there anything special you needed to do to get cgminer working with nvidia?

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                                • D
                                  daimyo last edited by

                                  Is there anything special you needed to do to get cgminer working with nvidia?

                                  absolutely nothing… works right outta the box. I am curious to see what a decent desktop nvidia could do

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                                  • L
                                    Lukey_p last edited by

                                    i have a GTX780Ti clocked at 1Ghz i could give a bash?

                                    Anywhere i should get all the files from? Thanks

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                                    • kris_davison
                                      kris_davison last edited by

                                      ive got three 750ti cards in a rig at home I may have a try and get this miner up and running with them.

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                                      • Wellenreiter
                                        Wellenreiter Moderators last edited by

                                        I have one 750Ti and get about 35khash reported by the miner with default settings, just I=10
                                        If I set intensity to a higher value, hw errors increase.
                                        By the way, the pool reports about 24 khash only, but no errors.

                                        Some hashes ‘lost in transit’? ;)

                                        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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                                        • D
                                          daimyo last edited by

                                          Wellenreiter, do we need external help with the stratum? Do you think it would increase productivity?

                                          I can get my 550M to work up to I-13 without HW. -I 12 and -I 13 make little difference tho.

                                          I hate to say it but it seems the 7850 has the edge over 750ti productivty wise while at same price… :( Tho I am not sure if lizhi had aggressive overclock or its just too hot in China :D - 86C

                                          What temps are you getting with the 750ti ? Have you tried I-13 ?

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                                          • lizhi
                                            lizhi last edited by

                                            I gave it a try last night on my nVidia 550M, Win7 and I got max 8 khs. Mostly default settings, --worksize 256 -I 13, no overclock. Driver version 294.10 - a bit old

                                            76C gpu temp -> not bad

                                            I think it can reach up to 10 khs with some tweakin

                                            This is what i get with -I 14

                                            Clipboard01.jpg

                                            Limitation of the gpu?

                                            And whats the logic 7850 to perform 3 times faster than 7970?

                                            Do you guys expect the stratum implementation to raise the productivity significantly?

                                            cgminer say “Maximun buffer memory device 0 supports says 536870912”

                                            Please reduce the thread-concurrency

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