Rocks clusters make sense for educational environments

8 More Discussions You Might Find Interesting

1. Red Hat

Does it make sense to reduce the total shared memory

We have several dozen Redhat 5, 6 and 7 servers that are running Oracle databases. On some databases we are using automatic memory management, which uses shared memory. On other databases we are use manual memory management, which does not use shared memory. When I see that a server is swapping...

2. UNIX for Dummies Questions & Answers

Online UNIX Educational Materials

Can you please give me good site for unix commands practice in online??

3. Cybersecurity

Root login in Linux - does it make sense?

I stumbled upon this thread and one aspect of it got me thinking. As i am building a small Linux network right now for a friend i would like to hear your opinion on this. I'd like to respectfully disagree. I think the Linux habit of disabling root login per default is wrong (not entirely...

4. UNIX for Advanced & Expert Users

sar -d output... does not make sense

Can someone explain the correlation between how sar names the disk drives and how the rest of the OS names the disk drives? sar lists my disk drives as sd0, sd1, sd2, etc..... while format lists my disk drives as c1t0d0, c1t1d0, c1t2d0,etc... And also why sar shows 8 disks but format...

5. UNIX for Dummies Questions & Answers

trying to make sense of rsync output...

I'm running the following rsync command to sync a directory between the 2 servers: rsync -az --delete --stats /some_dir/ server_name:/some_dir I'm getting the following output: Number of files: 655174 Number of files transferred: 14221 Total file size: 1138531979331 bytes Total...

6. UNIX for Dummies Questions & Answers

a for loop that doesn't make sense

I've been referring bash info for processes and came across a structure for a process which is defined like typedef struct process { struct process *next; char ** argv . . . }process; What I don't understand is that in the program there's a for loop which goes like this job...

7. Post Here to Contact Site Administrators and Moderators

Thank-you for this wonderful Educational Forum

I just want to say how much I love the unix forum. You all are awesome! I find the UNIX forum very educational, very prompt in responding and a really great website. I want to thank each an everyone of you for doing a fantastic job. Great Customer Service in educating and assisting us with our...

8. UNIX for Dummies Questions & Answers

Free/Educational Unix for PC??

1) Which versions of unix are available free or for educational purposes for PC. I see that the solaris binaries cannot be used on PC. 2) When I installed Linux RedHat, I had to make a partition in ext3 format. Will I have to do something similar for unix? BTW, my linux red hat os will not...

LEARN ABOUT CENTOS

cluster

CLUSTER(1)						      General Commands Manual							CLUSTER(1)

NAME

       cluster - find clusters in a graph and augment the graph with this information.

SYNOPSIS

       cluster [-v?]  [ -Ck ] [ -ck ] [ -o outfile ] [ files ]

DESCRIPTION

       cluster takes as input a graph in DOT format, finds node clusters and augments the graph with this information.	The clusters are specified
       by the "cluster" attribute attached to nodes; cluster values are non-negative integers.	cluster attempts to maximize the modularity of the
       clustering.  If the edge attribute "weight" is defined, this will be used in computing the clustering.

OPTIONS

       The following options are supported:

       -Ck    specifies  a targeted number of clusters that should be generated.  The specified number k is only a suggestion and may not be real-
	      isable.  If k == 0, the default, the number of clusters that approximately optimizes the modularity is returned.

       -ck    specifies clustering method.  If k == 0, the default, the modularity will be used. If k == 1 modularity quality will be used.

       -ooutfile
	      Specifies that output should go into the file outfile. By default, stdout is used.

       -v     Verbose mode.

EXAMPLES

       Applying cluster to the following graph,

	  graph {
	      1--2 [weight=10.]
	      2--3 [weight=1]
	      3--4 [weight=10.]
	      4--5 [weight=10]
	      5--6 [weight=10]
	      3--6 [weight=0.1]
	      4--6 [weight=10.]
	     }

       gives

	  graph {
		node [cluster="-1"];
		1 [cluster=1];
		2 [cluster=1];
		3 [cluster=2];
		4 [cluster=2];
		5 [cluster=2];
		6 [cluster=2];
		1 -- 2 [weight="10."];
		2 -- 3 [weight=1];
		3 -- 4 [weight="10."];
		4 -- 5 [weight=10];
		5 -- 6 [weight=10];
		3 -- 6 [weight="0.1"];
		4 -- 6 [weight="10."];
	  }

AUTHOR

       Yifan Hu <yifanhu@research.att.com>

SEE ALSO

       gvmap(1)

       Blondel, V.D., Guillaume, J.L., Lambiotte, R., Lefebvre, E.: Fast unfolding of  communities  in	large  networks.  Journal  of  Statistical
       Mechanics: Theory and Experiment (2008), P10008.

								   3 March 2011 							CLUSTER(1)

High Performance Computing