Hadoop Multi Node Cluster Configuration

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showing this error
bdcoe@master:~$ ssh bdcoe@master
ssh: connect to host master port 22: Connection refused

I have C program written in 16 bit system , I have to generate big prime numbers unfortunately which i cannot. My question is how i can use cluster and use the power of more then one pc to generate even bigger prime number more then that what a single computer can generate. Thanking you .

Nice Video..
My TaskTracker is not starting i follow each step

its superb thank you

Sir I have follow these steps i can get output sir but when i see browser i can get only one live node i cant get three nodes please help me sir

which version of hadoop you used for this cluster. i have used hadoop 2.4.1 but the start-mapred.sh file not their so it not running start-mapred.sh and job tracker and task tracker.please help me to run my cluster.
in my case only name node,datanode, node manager, data manager is starting not starting job tracker and task tracker.

How did you get the SingleNodeClustlerFiles and MultiNodeClusterFiles? I didnt find that part in Michale Noll.
Thanks in advance

Nice video

my map n reduce got stck at 0% n then the system crashed.
what xan be the possible reason?is this something to do with the h/w?
should i reduce the size of my input file?

Exception in thread "main" java.io.IOException: Error opening job jar: hadoop-examples.jar
at org.apache.hadoop.util.RunJar.main(RunJar.java:90)
Caused by: java.io.FileNotFoundException: hadoop-examples.jar (No such file or directory)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:214)
at java.util.zip.ZipFile.<init>(ZipFile.java:144)
at java.util.jar.JarFile.<init>(JarFile.java:153)
at java.util.jar.JarFile.<init>(JarFile.java:90)
at org.apache.hadoop.util.RunJar.main(RunJar.java:88)
-i am receiving this error when i am trying to run geolocation mapreduce example ..
what may be possible problem and solution ?
can you please help me with it ASAP

how to see the working on SlaveNode.