How does engine strength scale with hardware?












4















Say I run Komodo on my 4-core machine. How much stronger would Komodo be if I used an 8-core machine? A 40-core machine? A 4000-core machine?



Is there a general relation for this? Also, does this scaling depend on which engine is used, and if so, why?










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  • +1; also of interest: how the strength scales with the increasing RAM availability.

    – GloriaVictis
    2 hours ago
















4















Say I run Komodo on my 4-core machine. How much stronger would Komodo be if I used an 8-core machine? A 40-core machine? A 4000-core machine?



Is there a general relation for this? Also, does this scaling depend on which engine is used, and if so, why?










share|improve this question























  • +1; also of interest: how the strength scales with the increasing RAM availability.

    – GloriaVictis
    2 hours ago














4












4








4








Say I run Komodo on my 4-core machine. How much stronger would Komodo be if I used an 8-core machine? A 40-core machine? A 4000-core machine?



Is there a general relation for this? Also, does this scaling depend on which engine is used, and if so, why?










share|improve this question














Say I run Komodo on my 4-core machine. How much stronger would Komodo be if I used an 8-core machine? A 40-core machine? A 4000-core machine?



Is there a general relation for this? Also, does this scaling depend on which engine is used, and if so, why?







engines






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asked 4 hours ago









AllureAllure

1,735522




1,735522













  • +1; also of interest: how the strength scales with the increasing RAM availability.

    – GloriaVictis
    2 hours ago



















  • +1; also of interest: how the strength scales with the increasing RAM availability.

    – GloriaVictis
    2 hours ago

















+1; also of interest: how the strength scales with the increasing RAM availability.

– GloriaVictis
2 hours ago





+1; also of interest: how the strength scales with the increasing RAM availability.

– GloriaVictis
2 hours ago










2 Answers
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Multicore is important for chess engines, but it doesn't scale forever.




  • Up to certain depth, no matter how much hardware you have, you just don't have enough computational power

  • Yes. Scaling is heavily implementation dependent. For example, a simple mutex would make multithread programming much easier (any decent programmer will agree here), but that'd also make the engine run much slower than another engine runs without mutex locking.

  • 40 cores machine will play stronger than an 8-core machine, although it's hard to state how much. A 4000 core machine should also play stronger than a 40 core, but it's harder to justify the costs for smaller Elo improvement.






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    0














    I didn't do the experiment but I think it should be something like enter image description here



    As @SmallChess said in his answer: required computational power grows exponentially and at a certain depth it would be just way too big.



    for simpler position however it's not the case because the engine would've explored all the possibilities before reaching its full capacity (ie: maximum depth)






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      2 Answers
      2






      active

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      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

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      active

      oldest

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      1














      Multicore is important for chess engines, but it doesn't scale forever.




      • Up to certain depth, no matter how much hardware you have, you just don't have enough computational power

      • Yes. Scaling is heavily implementation dependent. For example, a simple mutex would make multithread programming much easier (any decent programmer will agree here), but that'd also make the engine run much slower than another engine runs without mutex locking.

      • 40 cores machine will play stronger than an 8-core machine, although it's hard to state how much. A 4000 core machine should also play stronger than a 40 core, but it's harder to justify the costs for smaller Elo improvement.






      share|improve this answer




























        1














        Multicore is important for chess engines, but it doesn't scale forever.




        • Up to certain depth, no matter how much hardware you have, you just don't have enough computational power

        • Yes. Scaling is heavily implementation dependent. For example, a simple mutex would make multithread programming much easier (any decent programmer will agree here), but that'd also make the engine run much slower than another engine runs without mutex locking.

        • 40 cores machine will play stronger than an 8-core machine, although it's hard to state how much. A 4000 core machine should also play stronger than a 40 core, but it's harder to justify the costs for smaller Elo improvement.






        share|improve this answer


























          1












          1








          1







          Multicore is important for chess engines, but it doesn't scale forever.




          • Up to certain depth, no matter how much hardware you have, you just don't have enough computational power

          • Yes. Scaling is heavily implementation dependent. For example, a simple mutex would make multithread programming much easier (any decent programmer will agree here), but that'd also make the engine run much slower than another engine runs without mutex locking.

          • 40 cores machine will play stronger than an 8-core machine, although it's hard to state how much. A 4000 core machine should also play stronger than a 40 core, but it's harder to justify the costs for smaller Elo improvement.






          share|improve this answer













          Multicore is important for chess engines, but it doesn't scale forever.




          • Up to certain depth, no matter how much hardware you have, you just don't have enough computational power

          • Yes. Scaling is heavily implementation dependent. For example, a simple mutex would make multithread programming much easier (any decent programmer will agree here), but that'd also make the engine run much slower than another engine runs without mutex locking.

          • 40 cores machine will play stronger than an 8-core machine, although it's hard to state how much. A 4000 core machine should also play stronger than a 40 core, but it's harder to justify the costs for smaller Elo improvement.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 3 hours ago









          SmallChessSmallChess

          15.4k22250




          15.4k22250























              0














              I didn't do the experiment but I think it should be something like enter image description here



              As @SmallChess said in his answer: required computational power grows exponentially and at a certain depth it would be just way too big.



              for simpler position however it's not the case because the engine would've explored all the possibilities before reaching its full capacity (ie: maximum depth)






              share|improve this answer




























                0














                I didn't do the experiment but I think it should be something like enter image description here



                As @SmallChess said in his answer: required computational power grows exponentially and at a certain depth it would be just way too big.



                for simpler position however it's not the case because the engine would've explored all the possibilities before reaching its full capacity (ie: maximum depth)






                share|improve this answer


























                  0












                  0








                  0







                  I didn't do the experiment but I think it should be something like enter image description here



                  As @SmallChess said in his answer: required computational power grows exponentially and at a certain depth it would be just way too big.



                  for simpler position however it's not the case because the engine would've explored all the possibilities before reaching its full capacity (ie: maximum depth)






                  share|improve this answer













                  I didn't do the experiment but I think it should be something like enter image description here



                  As @SmallChess said in his answer: required computational power grows exponentially and at a certain depth it would be just way too big.



                  for simpler position however it's not the case because the engine would've explored all the possibilities before reaching its full capacity (ie: maximum depth)







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 24 mins ago









                  MrMaxPayneMrMaxPayne

                  946




                  946






























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