The count of contributions (summary of Pull Requests, opened issues and commits) to public repos at GitHub.com from Sun, 13 Jan 2013 21:59:04 GMT till Mon, 13 Jan 2014 21:59:04 GMT.
Only first 1000 GitHub users according to the count of followers are taken. This is because of limitations of GitHub search. Sorting algo in pseudocode:
githubUsers
.filter((user) -> user.followers > 233)
| Latency Comparison Numbers | |
| -------------------------- | |
| 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 | |
| Send 1K bytes over 1 Gbps network 10,000 ns 0.01 ms | |
| Read 4K randomly from SSD* 150,000 ns 0.15 ms |
| # install general deps | |
| sudo yum groupinstall "Development Tools" | |
| sudo yum install wget unzip | |
| # install java | |
| cd /opt/ | |
| sudo wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u60-b27/jdk-8u60-linux-x64.tar.gz" | |
| sudo tar xzf jdk-8u60-linux-x64.tar.gz | |
| cd /opt/jdk1.8.0_60/ |
| package org.apache.spark.examples | |
| import org.apache.spark.SparkContext | |
| import org.apache.spark.SparkContext._ | |
| import org.apache.spark.rdd.RDD | |
| import java.util.Random | |
| import scala.collection.mutable | |
| import org.apache.spark.serializer.KryoRegistrator | |
| import com.esotericsoftware.kryo.Kryo |
| # eth0 is public network interface | |
| iptables -P INPUT ACCEPT | |
| iptables -P OUTPUT ACCEPT | |
| # Allow connection RELATED,ESTABLISHED on eth0 | |
| iptables -t filter -A INPUT -i eth0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| # Prevent DOCKER chain | |
| iptables -t nat -I PREROUTING -m addrtype --dst-type LOCAL -j RETURN |