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$ opam install megaindex-deps
The following actions will be performed:
  - install conf-m4                 1          [required by ocamlfind]
  - install ragel                   6-git      [required by tld]
  - install ocamlbuild              0.12.0     [required by tld, sqlgg, mybuild, etc.]
  - install conf-mariadb            1          [required by supertable]
  - install conf-pkg-config         1.1        [required by ctypes, conf-zlib]
  - install dune                    1.5.1      [required by megaindex-deps]
  - install conf-gmp                1          [required by conf-gmp-powm-sec, zarith]
  - install conf-rocksdb            1          [required by ahrocksdb]

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./target/debug/parity --config node1.toml
Loading config file from node1.toml
2018-10-02 01:17:48  Starting Parity-Ethereum/v2.2.0-unstable-f3b806b47-20181001/x86_64-linux-gnu/rustc1.30.0-nightly
2018-10-02 01:17:48  Keys path /tmp/parity1/keys/DemoPoA
2018-10-02 01:17:48  DB path /tmp/parity1/chains/DemoPoA/db/d0678730db7ea493
2018-10-02 01:17:48  State DB configuration: fast
2018-10-02 01:17:48  Operating mode: active
2018-10-02 01:17:48  Configured for DemoPoA using AuthorityRound engine
2018-10-02 01:17:49  Public node URL: enode://f0b1bb7055af2f49799e2d188d8785b29a996126328303879eddac13bdf49b367cb707129deee8ff79f39a7d9df7f72442d64f7a7ac3d747acea67caff04149c@10.0.0.101:30301
2018-10-02 01:18:24     0/25 peers   8 KiB chain 7 KiB db 0 bytes queue 448 bytes sync  RPC:  0 conn,    0 req/s,    0 µs

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./target/debug/parity --config node0.toml
Loading config file from node0.toml
2018-10-02 01:17:42  Starting Parity-Ethereum/v2.2.0-unstable-f3b806b47-20181001/x86_64-linux-gnu/rustc1.30.0-nightly
2018-10-02 01:17:42  Keys path /tmp/parity0/keys/DemoPoA
2018-10-02 01:17:42  DB path /tmp/parity0/chains/DemoPoA/db/d0678730db7ea493
2018-10-02 01:17:42  State DB configuration: fast
2018-10-02 01:17:42  Operating mode: active
2018-10-02 01:17:43  Configured for DemoPoA using AuthorityRound engine
2018-10-02 01:17:44  Public node URL: enode://ac16e845a28509a01d38011208944ccc58d02570d39c441ca8d7095b524f5c5d688afaf12a5c55b8a5ad7673c415c85b4546501fc66b52b0c5d20d726538933d@10.0.0.101:30300
2018-10-02 01:18:14     0/25 peers   8 KiB chain 7 KiB db 0 bytes queue 448 bytes sync  RPC:  0 conn,    0 req/s,  244 µs

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nick@nick-pc-lx1:~/src/parity-ethereum-<tmp>-$ ./target/debug/parity --config node0.toml
Loading config file from node0.toml
2018-10-01 17:23:37  Starting Parity-Ethereum/v2.2.0-unstable-f3b806b47-20181001/x86_64-linux-gnu/rustc1.30.0-nightly
2018-10-01 17:23:37  Keys path /tmp/parity0/keys/DemoPoA
2018-10-01 17:23:37  DB path /tmp/parity0/chains/DemoPoA/db/d0678730db7ea493
2018-10-01 17:23:37  State DB configuration: fast
2018-10-01 17:23:37  Operating mode: active
2018-10-01 17:23:37  Configured for DemoPoA using AuthorityRound engine
2018-10-01 17:23:37  Public node URL: enode://b04fa5f41264e96892d1bcaee96c6146022873b82681491f61ab7111a94b31c518f2d213c8ab7e7a8c93e3c030053318fa2beff93a43aa5c9536b813d3f861fb@10.0.0.101:30300
2018-10-01 17:24:07     0/25 peers   8 KiB chain 7 KiB db 0 bytes queue 448 bytes sync  RPC:  0 conn,    0 req/s,    0 µs

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// What sort of object can be passed as `user_data` during callback 
// registration which can signal back to a parked futures task to wake up?
//
// Assume that the callback will come from another thread and that
// solutions involving constant repeated calls to `poll` to check
// whether or not the callback has already happened are too wasteful.
//
// This probably has something to do with unpark and unpark events 
// associated with tasks but how do those work in a potentially 
// multi-threaded scenario. Does tokio-core provide something that can

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//! An example demonstrating that glium has a problem using instancing when
//! the vertex buffer is a slice with a non-zero starting index.
//!

#[macro_use] extern crate glium;
use glium::{DisplayBuild, Surface};

// Vertex Shader:
static VERTEX_SHADER_SRC: &'static str = r#"
    #version 140