I am bit curious about Cluster Computing. I don't know much about it.Here is Some thing which I wanted to know.1) How can I configure fedora for Cluster computing .2) Is it possible to connect computer of different configuration(like AMD + Intel )? and also for different architecture ( like i386 + x86_64 ) for cluster computing.
View 7 RepliesI want to set up a cluster for scientific computing (mainly statistical stuff with R). I have a few conceptual questions. First, is there a difference between a Beowulf cluster and a cluster that has single-system image ("SSI," e.g. using openSSI or LinuxPMI)? If so, what's the difference? Second, if there is a difference between Beowulf and SSI, which one is better for scientific computing? Third, does using Eucalyptus make sense for scientific computing or is this more suitable for IO-oriented operations such as web service or databases
View 2 Replies View RelatedI am trying to build GFS2 cluster with 2 or 3 Fedora 14 nodes, but I've encountered some problems from the start. First luci does not work at all in Fedora 14. There is no luci_admin and even if I manage to start luci service, I get a blank white screen when I try to open it from the browser. I've googled a bit and found that I'd might be able to setup GFS if I manage to build cluster.conf manually and start the cluster suite, but I cannot find documentation on how to create cluster.conf anywhere. If anyone knows how to setup GFS2 without a cluster suite or how to configure cluster.conf.
View 9 Replies View RelatedI can't forward my kerberos credentials to a computing resource before connecting to the resource for which I have kerberos credentials. In other words, from my machine at work I obtain my ticket with kinit -f to a computing facility off in some lab somewhere.
Then, I want to ssh to another machine in another department (I don't have control over the krb5.conf file or this would have been easy) where I work. It is on this machine I want to be able to ssh,scp, etc to this far off lab. I've tried several options around this barrier, but I'm a total failure thus far. I checked that GSSAPIAuthentication is set to yes.
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I'm having a very strange problem with red hat cluster. After testing it in the lab, I tried to install a new cluster and received the following error: cman not started: Cannot start, cluster name is too long or other CCS error /usr/sbin/cman_tool: aisexec daemon didn't start I've checked the internet for that error, but nothing. I decided to to take the example from cluster.conf man, which looks like that :
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And still I get the same error. I can find my servers both from DNS (FQDN and short name) and they also appear in /etc/hosts.
I am working in a project that needs to set up an Apache Web Cluster. The cluster needs to be High-availability (HA) cluster and Load-balancing cluster. Someone mentioned the use of Red Hat Cluster Suite, but, honestly, I can't figure out how it works, I haven't been able to configure it correctly. The project currently have two nodes, but we need to support at least three nodes in the cluster.
View 5 Replies View Relatedconfigure a separate NIC for the heartbeat. what i need to add to cluster.conf to achieve this?
View 1 Replies View RelatedI am trying to do the cluster storage with the Rock Cluster storage operating system . I have install the rock cluster on the main server . and I want to connect the client with the PXE boot . when I starting the client then it boot from the PXE boot into the mode of compute node. but it ask the where is to be stored the I have give the path..then server says that not able to find the directory path.
Steps:-
1) insert-ethers
2) client is started with the PXE boot.
3) it detects the dhcp .
4) At last it demand where is to be started by cd-rom, harddisk ,nfs etc.
then I started with the nfs and I have given the lanIp of server.and server is detecting the client but client is not finding the filesystem directory. into export partition directory but it is not taking path.
PATH:-
/export/rock/install it is not finding this path then it is not able to start the o/s from PXE boot..Is there any solution and manual of rock or anyother solution then u can reply to me...
I was wondering, being a former Ubuntu user I was able to do cloud computing using Ubuntu One. Is there anything similar in OpenSUSE?
View 9 Replies View Relatedhow to show all program running (( computing activities )) on ubuntu 11.04 , like mac or this picture [URL]
View 5 Replies View Relatedwhat is High Performance computing and its uses.
what is active active and passive passive cluster ?
rhel5.5 rhcs cluster and xen kernel . now the cluster is running . the service ccsd .cman ,and rgmanager does work on both of the cluster member host. now I have a connecting problem when access the cluster virtual IP from different subnet clients. the clients in the different subnet with the cluster virtual iP access the VIP , the connection is intermittent ,while the clients in the same subnet of the VIP access the cluster VIP the connection is always on.
could anybody tell me , does the xen kernel has impacts to the cluster , or is this only a networking problem not a system problem? I monitor the switch mac table, find that , the mac of eth0 is always changing . so maybe it is xen kernel problem. I refer to some xen materials , the eth0 is a virtual adapter .and the original physical adapter eth0 is renamed as pth0 and works as a bridge .so how could I fix a mac address to eth0 ?
I wanted to know how to cluster linux server. I mean any squid proxy server or apache server cluster or any other service, but I just wanted to know how to do cluster in linux. I have been searching it but there is no hope.
View 4 Replies View Relatedhow to find version of red hat cluster running on a box. Any file or executable that gives information about the installed cluster version?
View 1 Replies View RelatedI was asked to research if it is possible to install a Debian distribution of Linux to HP Z420 Workstations as second OS (dual boot) in our lab. The lab is normally used for Computer Aided Design (Windows 7). The plan is to have parallel computing possible with these workstations on Linux side.
The link for HP Z420 Specs suggests amd64 distrubition should be supported. Tell me If I'm wrong as I have always been interested in software side of things.
Looking for info regarding installation of Debian to HP Z420 workstations as well as using these computers for parallel computing with Debian.
I'm planning on setting up a new Linux box expressly for distributed computing (BOINC, SETI@home, etc.). All things being equal, what's better- More clock cycles or more cores?
View 4 Replies View RelatedI came across some problems. I need to conduct parallel computing on CUDA. I input "uname -a"and read these: "Linux BXSJC 2.6.38.8-35.fc15.i686 #1 SMP Wed Jul 6 14:46:26 UTC 2011 i686 i686 i386 GNU/Linux". I use CUDAtoolkit 4.0. when I input: cd /home/bxsjc NVIDIA_GPU_Computing_SDK/C and "make -i ",the computer returns
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Wanting to evolve current cluster to GPU-enabled and retain ubuntu (champion the cause!) Details below; ill share all results/successes here on the forum for any interested. How best to get started ? Heterogeneous cluster of 40 quads/dual-quads w/4,8,16Gb memory All running ubuntu 8.04 or 9.04 Quantum Mechanical computations supporting neutron and muon beam experiments on red-wine/green-tea anti-oxidants, etc... Success of this centure would be precision independent (for now) single-precision floats are fine for now. I am more concerned with getting it going and making compatible with current codes - less concerned with accuracy of results for now. Double prcision floats will come anyways with the Fermis.
View 5 Replies View RelatedI have a plan to deploy a private or public cloud computing. And I've been considering Eucalyptus, OpenNebula, Nimbus, vSphere, abiCloud and Joyent.
I'm very interested in Eucalyptus and OpenNebula, since they are both open source, they have many features, they both support Amazon EC2 and Amazon APIs and they seem to be able to work with different hypervisors, such as KVM, Xen, VMWare ESXi, etc.
Eucalyptus seem to be very supported by Canonical, because it can work with Centos Server, so I bet it will grow more and more, and we have a good experience with Linux and in particular redhat.
On the other hand, many people told me that right now OpenNebula is better. So the question is:
- which one between Eucalyptus and OpenNebula? The other three choices? vSphere is probably free (if we use ESXi and not ESX) but it's not open... abiCloud seems to be similar to Eucalyptus and OpenNebula... about Joyent, many people say very good things, but I want to know more, and then, is it open source? I mean here, can I use it as free ?
After having built the private cloud, we probably want to also use an external service and create an hybrid cloud. If for private cloud we chose OpenNebula,Eucalyptus, abiCloud or Nimbus I guess the best thing is to use Amazon EC2.
- Is it also possible to use VMWare solution?
- And if we chose abiCloud or Joyent, what can we use to create an hybrid cloud?
About Microsoft Azure and Google App Engine, it seems to me they have many limitations and I prevent it because it could be have a highly cost, so I'm not considering them.
I'm trying to get experience in creation of virtual Fedora 9 x64 cluster using Ubuntu 9.04/Virtual Box 2.2.2. I have a head node with 1 G of RAM and two slave nodes with 512 M each. There's internal networking in Virtual Box with DHCP, so my nodes have addresses:
192.168.15.100/24 (Slave0.localdomain), 192.168.15.101/24 (Slave1.localdomain), 192.168.15.102/24 (Head.localdomain). Ping is OK. I've added the following string to /etc/exports file: /usr/share 192.168.15.0/24(rw) And then used /usr/sbin/exportfs -a But showmount -e 192.168.15.102 entered at slave node shows nothing. What's wrong? May be I have to somehow start nfsserver, but how?
I have lack of understanding of CentOS in general. I have looked for a remedy on other forums and google, but haven't been able to find the answer. I have a 3 node cluster that was functioning great until I decided to go offline for awhile. My config is as follows:
node 2: vh1
node 3: vh2
node 4: vh6
All nodes connect to a common shared area on an iscsi device (vguests_root)
Currently vh2 and vh6 connect great, however since putting the machines back online I can no longer connect with vh1. A dmesg command on vh1 reveals the following:
GFS2: fsid=: Trying to join cluster "lock_dlm", "Cluster1:vguest_roots"
GFS2: fsid=Cluster1:vguest_roots.2: Joined cluster. Now mounting FS...
GFS2: fsid=Cluster1:vguest_roots.2: can't mount journal #2
GFS2: fsid=Cluster1:vguest_roots.2: there are only 2 journals (0 - 1) .....
I want to setup two node http cluster,
View 1 Replies View RelatedWe are having a production setup where we are having one SAN storage and two RHEL machines. Now we have created a SAN LUN, say for example trylun. Now we have mounted the same SAN partition on both the machines of RHEL on the same mountpoint path say for example /trylun. After that we have installed RHEL Cluster suite to create a failover cluster.
Now we will be having one Ingres Database service for which data will be stored in SAN storage LUN mounted on both the machine say for example /trylun. When service on one machine will be down then RHEL Cluster Suite failover cluster will takeover and then it will start the same service on another node and handle the failover. Wether Ingres will run from node 1 or node 2 will not make any difference as both are using shared SAN storage i.e /trylun in our example. So same data storage will be used by both the ingres service on both the servers.
Now I have to simulate the same in my office test environment. But the problem is, in office test environment I will not have SAN server as it is additional cost. And I will have fedora operating system.
So I wanted to know is how can we create a shared file system like SAN in fedora (Is NFS a solution). And after creating the shared file system how can we create a failover cluster in fedora if we do not have Red Hat Cluster Suite.
I just installed ubuntu 10.04.02 on to my tablet, aside from the dreaded intel video problem. Install went ok, but I'm finding now. That when I rotate the screen, the touch screen isn't adjusting to match. I'm not really ubuntu savvy.
View 6 Replies View RelatedWhere can I find the rpms for OpenMP for SciLinux 5.5 for64bit computing?
View 3 Replies View RelatedI have to compute prime numbers with threads in C. So I choose the algorithm "Sieve of Eratosthenes" and I tried to create 2 threads, but I don't know how to optimize my computing function with threads I beg for help. This is my function:
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but it seems like the both of the threads are calculating the same function twice? Is it possible to be optimized or not?
I compiled a code on a Linux cluster machine with mpich and ifort. A test run shows that the program works fine. However, it seems that the program is running in serial instead of parallel mode: reducing the number of CPU's from 32 to 3 does not increase the time it takes to run the simulation. Infact, the simulation is slightly faster with 3 compared to 32 CPU's. Unfortunately I have very little experience on the subject.
My questions are:
(1) How can I be 100% sure my code is running in parallel and not in serial mode?
(2) If the code is running serial, what do I need to do to make it run in parallel mode?
Details:
For submission I use a jobscript which includes the following lines:
Red Hat 4.1.2-46
Does anyone know how to restrict only certain users to log into my RHEL 5.3 cluster? I have tried using pam.d but no luck.
View 3 Replies View RelatedCan ANYONE point me in the right direction on how to use storage on multiple servers as a single cluster?I thought storage cluster was for that but, after much googling, and even more help from here, I don't think that achieves my goal. My goal is to have multiple servers share a file system, to act as somewhat of a network raid, so if node-A goes down the files are available on other nodes, and hopefully so when the capacity of the nodes are reached I can add nodes to expand the "cluster".
View 6 Replies View RelatedI need to build a 3 node web server cluster to run a php application. Since the app requires users to login (which means a session state is to be maintained), I will be sharing sessions save path, I also need to share the application directory across 3 nodes. I having trouble deciding which cluster file system to select.
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