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""" | |
(C) Mathieu Blondel - 2010 | |
License: BSD 3 clause | |
Implementation of the collapsed Gibbs sampler for | |
Latent Dirichlet Allocation, as described in | |
Finding scientifc topics (Griffiths and Steyvers) | |
""" |
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(* | |
* Finder Open iTerm Here - v1.0.2 - 4/14/2011 | |
* http://benalman.com/ | |
* | |
* Copyright (c) 2011 "Cowboy" Ben Alman | |
* Dual licensed under the MIT and GPL licenses. | |
* http://benalman.com/about/license/ | |
*) | |
tell application "Finder" |
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#!/bin/sh | |
# Just copy and paste the lines below (all at once, it won't work line by line!) | |
# MAKE SURE YOU ARE HAPPY WITH WHAT IT DOES FIRST! THERE IS NO WARRANTY! | |
function abort { | |
echo "$1" | |
exit 1 | |
} | |
set -e |
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package main | |
import ( | |
"bytes" | |
"exec" | |
"log" | |
"os" | |
) | |
// Pipeline strings together the given exec.Cmd commands in a similar fashion |
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package main | |
import ( | |
"fmt" | |
) | |
type Node struct { | |
Value int | |
} |
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If you want, I can try and help with pointers as to how to improve the indexing speed you get. Its quite easy to really increase it by using some simple guidelines, for example: | |
- Use create in the index API (assuming you can). | |
- Relax the real time aspect from 1 second to something a bit higher (index.engine.robin.refresh_interval). | |
- Increase the indexing buffer size (indices.memory.index_buffer_size), it defaults to the value 10% which is 10% of the heap. | |
- Increase the number of dirty operations that trigger automatic flush (so the translog won't get really big, even though its FS based) by setting index.translog.flush_threshold (defaults to 5000). | |
- Increase the memory allocated to elasticsearch node. By default its 1g. | |
- Start with a lower replica count (even 0), and then once the bulk loading is done, increate it to the value you want it to be using the update_settings API. This will improve things as possibly less shards will be allocated to each machine. | |
- Increase the number of machines you have so |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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#get root access | |
$su - | |
$ cd /tmp | |
#Remove old Ruby | |
$ yum remove ruby | |
# Install dependencies | |
$ yum groupinstall "Development Tools" | |
$ yum install zlib zlib-devel |
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