multi drove gpu plotting?



  • Hey guys,

    Can I run more than 1 instance of GPU plot generator?
    1 instance for per drive?
    What would be the most efficient way to plot multi drives?


  • admin

    @Havoc you could run multiple instances, but you can also run it and tell it to use all your GPU's simultaneously, and mine multiple drive simultaneously.

    To do multi drive with multi GPU - define all your GPU's in the devices.txt, then put multiple file names on the gpuplotgenerator command line.



  • @Havoc example:

    gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_914447040_3268608_24576 L:\temp\10718900860795585473_937327296_3268608_24576
    

    or

    gpuPlotGenerator.exe generate direct F:\temp\10718900860795585473_914447040_3268608_24576 L:\temp\10718900860795585473_937327296_3268608_24576
    

    basicly just multiple files in one line and they get plottet parallel.



  • or even a batch (.bat) file like this(windows):

    mkdir F:\temp
    mkdir L:\temp
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_914447040_3268608_24576 L:\temp\10718900860795585473_937327296_3268608_24576
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_917715648_3268608_24576 L:\temp\10718900860795585473_940595904_3268608_24576
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_920984256_3268608_24576 L:\temp\10718900860795585473_943864512_3268608_24576
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_924252864_3268608_24576 L:\temp\10718900860795585473_947133120_3268608_24576
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_927521472_3268608_24576 L:\temp\10718900860795585473_950401728_3268608_24576
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_930790080_3268608_24576 L:\temp\10718900860795585473_953670336_3268608_24576
    start /wait gpuPlotGenerator.exe generate buffer F:\temp\10718900860795585473_934058688_3268608_24576 L:\temp\10718900860795585473_956938944_3268608_24576
    


  • @nixxda @haitch Ah that makes more sense! Thank you so much.

    2 last questions, I heard in DirectMode it pre-optimizes your plots.

    What would my command look like?
    Would I write it
    generate direct F:\temp\10718900860795585473_914447040_3268608_3268608

    And If im plotting 1TB would I have to make sure 2TB of space is available?
    Im also try to avoid the whole Plot half, optimize, plot another half, optimize pattern



  • @Havoc said in multi drove gpu plotting?:

    Would I write it
    generate direct F:\temp\10718900860795585473_914447040_3268608_3268608

    yes and

    And If im plotting 1TB would I have to make sure 2TB of space is available?

    yes!

    best practice is to plot one drive and optimize over to another drive. (disc read and write speed!)

    on the other hand, using direct mode to get optimized files straight away is also possible (and does not need double the space) but it might be a bit confusing at first.
    and if its any faster is still to be discussed!-)


  • admin

    @Havoc No, the last number is the stagger size, and that tells the plotter how much memory it can use. The stagger size is expressed as multiples of 256KB - so to get a safe value, take 1/4 of your RAM size in GB, multiply be 4096 and use that. eg - if you have 16GB, use 16 / 4 = 4 * 4096 = 16384.

    The plotter will take of the optimization, and your plot will end up fully optimized.


  • admin

    @nixxda If using the GPU plotter in direct mode you don't need double the space - it plots the file fully optimized.



  • @haitch said in multi drove gpu plotting?:

    @nixxda If using the GPU plotter in direct mode you don't need double the space - it plots the file fully optimized.

    edited! thanks



  • so i got myself a RX 480 8GB.

    What should I set my device.txt? Right now its
    1 0 8192 64 8192 but I want to make the most of the card as I will be parallel plotting 8Tb drives in direct mode.

    Fyi if this is also importannt.
    i7 4.5Ghz
    32 GB ram

    Any tips?


  • admin

    @Havoc those values will be fine. You might get a slight increase be increasing the third value - 8192 - but it's going to be minimal.



  • @haitch Thanks Haitch!
    Is this normal?
    1 week really? I tried 2, 2TB drives at the same time on direct mode.
    What do you think the bottleneck is?
    0_1482065873696_GPUPLOTDIRECT.JPG

    EDIT: Actually never mind - it seems to be equalize to a more reasonable ETA now.
    0_1482068361343_GPUPLOTDIRECT2.JPG

    Can anyone explain why it stalls in the beginning?


  • admin

    @Havoc In direct mode it creates the whole file, then starts writing nonces. That first phase can take hours, so it makes it appear that nothing is happening, and gives you extremely low initial plotting rates - obut they increase the whole time of the second phase.