RE: How to improve Steem mining performance

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How to improve Steem mining performance

in steem •  9 years ago 

AWS 36 core VPS with MPIR , hps 125k

steem
9 years ago by

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      ·  9 years ago 
    ...
sudo apt-get remove libgmp-dev
wget -c http://mpir.org/mpir-2.7.2.tar.bz2
tar xjf mpir-2.7.2.tar.bz2
cd mpir
./configure --enable-gmpcompat
make
sudo make install
cd ..

cd steem
cmake ...

    By the way, an earlier version of @testz's patch will link libgmp dynamically, don't know if it's fixed.

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      3 votes
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        ·  8 years ago (edited)

      thanks

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        1 vote
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          ·  9 years ago 

        Here is my quick and dirty patch to link libgmp statically (it's not perfect, but just works):

        cd steem
cd libraries/fc
git checkout master
git pull
git remote add abit https://github.com/abitmore/fc.git
git fetch abit
git merge -m "merge abit/libgmp-static" abit/libgmp-static
cd ../..
cmake ...

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          2 votes
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            ·  8 years ago (edited)

          When building with MPIR are you making tweaks to support it to the Steem source or build commands? Or should it pick it up automatically and work?

          EDIT
          Can''t reply to your comment, but you say "build commands" are used to tweak Steem build yet your instructions just say"cd steem
          cmake ..."

          Thats not any change to the source/build!

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            2 votes
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              ·  8 years ago (edited)

            Looks like some misunderstandings.

            By saying "tweaks to build commands", I mean we did some changes to the cmake.xxx config files, so we'll build with libgmp (the steps are listed somewhere below this comment).

            Then we remove the libgmp provided bylibgmp-dev package, and build & install our own libgmp from MPIR source. So it will be picked up automatically when building the final binaries.

            Any further questions please let me know.

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              3 votes
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                ·  8 years ago 

              Build commands. Details described above.

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                2 votes
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                  ·  9 years ago 

                Building with MPIR (thank you for all your help with that by the way) on an i5-2500K Sandy Bridge CPU performance is about the same as when using the libgmp-dev library. It's probably better with newer CPUs that have more specialty instruction sets. Someone commented in the slack it could be AVX2.

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                    ·  8 years ago 

                  Anyone know if anything on this page is still relevant with build 12.x? Specifically on the MPIR support, the above doesnt suggest any changes are needed to steem source to avail of MPIR.. ? I tried it and it made no difference (Haswell CPU).

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                      ·  8 years ago 

                    I just built every new release with MPIR, didn't check if there are still performance improvement though.

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                      2 votes
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                        ·  8 years ago 

                      Only just?

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