Is there a way to run Linux operating system on a virtual machine which aggregates the resources of physical machines on the local network and acts as a single super-computer? If possible, how?  Thanks.
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by now I have 10 servers for hpc, power computing oriented. My users need to launch several processes using qmake. The users are used to work with ubuntu 9.10, and the software from the repositories is switable for them.  I've deployed ubuntu 9.10 to all 10 servers (pxe rocks).  By now we work with parallel-ssh and cluster-ssh, which allows as to launch the same process to all servers. With this tools this tools the servers remain as independent but with the same software and the same launched command.  Now we would like to go to next step and see all the servers as a single one with all the resources from the other 9 as if was its resources.   The difference would be substantial in time to process and also time to design the command to launch.  Any advice on wich software to use will be very useful?  Thanks
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I'm using Linux (centos) machine, I already connected to the other system using ssh. Now my question is how can I copy files from one system to another system?  Suppose, in my environment, I have two system like System A and System B. I'm using System A machine and some other using System B machine.  How can I copy a file from System B to System A? And, copy a file from System A to System B?
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I have a question,in linux, is there any method to mount a block of memory as a filesystem? For example, in X86 architecture, when power on, I reserve a  block of memory about 8 Mbytes, and then when linux startup, I mount this block of memory as a filesystem and then read and write file to the file system ? What will be the fs type?
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When I start VirtualBox, I only have 32 bit operating systems available. After some research I followed the steps on  but to no avail. My host OS is 64 bit, Intel Virtualization Technology and VT-d are both enabled in the BIOS, and Hyper-V platform is disabled in the Windows Feature list, yet I still only am presented 32 bit operating systems.  I find these    and they seem to solve the problem for everyone, but not for me.   I also tried  the installation without luck. How can I fix this to run a 64 bit Linux OS in VB?  EDIT I also have the latest version of BIOS.  Edit: This question is not a duplicate of  as I state that the solution to that question did not solve this problem.
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I have been living under a rock for the past 5 - 8 years, and am just now getting up to speed with virtualization, virtual machines and platforms like VMware or VirtualBox.  I think I am starting to get them, but there are two concepts about VMs that I'm just choking on for some reason; one has to do with their intrinsic benefit to the enterprise, and the other has to do with their practicality when being used.  So I understand that you can have multiple VMs running on the same physical machine, all doing their own "thing" as if they were separate machines. So let's say I want to make a nice little virtual network of servers in my home office so I can have a big sandbox to play inside of for all my projects. I set up 2 physical machines as servers, and on each of them I have, say, 4 virtual machines running (1 might be an app server, another might be a RDBMS, another might be a message broker, etc.).   Besides saving me money (as I only have to provide 2 physical machines instead of buying 8 servers), what instrinsic benefit/purpose do these VMs serve here? I don't care how clever virtual machines are, if my computer only has 8GB of RAM, and I have 4 VMs running on it, those VMs only get 8GB of RAM to share between them. Putting 4 VMs on my server doesn't endow it with 4 times that amount of RAM! So, as far as I see it, VMs save you money on hardware, but just end up bogging down that hardware as you have multiple machines competing over the same pool of resources. What am I missing here? Can VMs communicate with each other over your network using high-level protocols like TCP/IP, HTTP, FTP, etc.? Otherwise, it just doesn't make sense to implement all these VMs if you have to feed them separate and independent chunks of data/requests to process.
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I am planning to rent a VPS service with following basic specification:   512mb of RAM 1 CPU 20gb HDD (4gb of it is swap) Ubuntu 10.10 server   I am able to choose between a 32 bit or 64 bit install of Ubuntu server as the operating system.   My question is would it be better to chose a 32 bit operating system since I will have only 512mb of RAM, rather than using a 64 bit operating system and dealing with the additional overheads?  edit:  I have installed Ubuntu server 10.10 32 bit and 64 bit on VirtualBox. After a minimalistic installation with only ssh server, the 32 bit installation consumes 63mb of RAM when first boot up and 64 bit consumes 85mb of RAM.  After installing and running  daemon, 32 bit consumes 99mb of RAM when first boot up and 64 bit consumes 128mb.
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I would like to install some software on a linux-machine that I have run in VirtualBox. Then I would like to do the same thing on a linux-VPS.  I think that I can save all commands that I run using the history command. Is there any way I could run these commands on another machine? Or what is the way to do such things?
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I was reading through the hardware requirements of  and it says:     1 GB of RAM (1.5 GB if running on a virtual machine)   Why does running on a VM require more resources?
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I've been thinking a lot about this lately and haven't been able to find any good documentation online that explains this:  When installing Ubuntu Server, I can choose between Minimal system and Minimal virtual machine by hitting the F4 button at the install screen.  Why should I choose one over the other?
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I would like to install Ubuntu on my Windows 7 64-bit PC to do analysis of astronomy data. The data files are often large (can be few hundred MB, possibly a GB). The data files may be located on an external hard disk. The PC has 6 GB RAM and 670 GB hard disk.   I'm trying to decide whether to do a proper dual-boot, installing Ubuntu in its own partition (I'm nervous of messing around with the hard disk, have never done it before) or to run Ubuntu using VirtualBox in Windows. How much slower is running in Virtualbox likely to be?   If I do go for a traditional dual-boot, would it make sense to divide the hard disk more or less equally between the two OSs?  I would be very grateful for some advice.  Many thanks Kevin
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I want to know if there is a centralised community site where all Hardware is listed in terms of compatability with Linux. Something like AppDB for Wine.
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I would like to run Windows XP as a virtual machine on my Android tablet.  Since Android is based on Linux, is it possible to compile VirtualBox to run in Android?  If not possible, is it possible to run WinXP as a virtual machine in any way on an Android tablet?
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Okay my question is that, I want to run a heavy application, on a Virtual Machine (VirtualBox) with just 2 GB RAM (Windows 7 32Bit Host has 4 GB, 3.5 GB effective). Initially I thought of installing Ubuntu Server 12.04.1, which doesn't come with a GUI, so I thought it would be efficient in performance, but I have only Ubuntu 12.04 Desktop.  My question is, is it possible to remove the GUI parts in Ubuntu 12.04 Desktop (Not Server), keeping only the core OS, after installation in a virtual machine?   Or, is there anyway to improve the performance of the OS?  If you need more information, I am ready to provide.  I don't want the GUI or anything, even a small terminal window is fine for me, I can access files through FTP.
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I'm still kinda new to linux and my understanding was I could let multiple people (at the most me + two more) use my pc at the same time. If this is indeed the case, how do I?
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I was wondering if it's possible to run an Ubuntu virtual machine using VirtualBox in background, I mean, without any window open.  The idea is to connect via SSH to the Linux host, that would be running in background.  Has anyone ever done something like this? Is it possible?
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One of the local college in my home town in India is planning to implement mass distribution and usage of Ubuntu Linux for the purpose of education. I have been asked by my CTO to look into the matter and bring out some valuable suggestions with which we can roll out multiple installations on more than 450 computers!  I have know a way in Windows that uses the Ghost technique to address this issue. Our purpose is similar in this case but don't know how to proceed further. I have been using Ubuntu for the past six months to get the feel and understanding of the OS and I have to admit it that from the very first day, I was almost into it learning, reading, learning and asking others to use it too. Just amazing!  Help in any form is appreciated.  Note: All the 450 computers are of different configurations/variety of different motherboards, hard drives, ram, etc. But they all meet the minimum criteria for Ubuntu installation's hardware requirement.
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Some of my friends and I are interested in starting a new Linux distro. How do we do that? What do we need to plan? Backstory I represent a community of Linux sysadmins/implementors whose special needs include, among others:  A specific 'lean' kernel config Package management that fits our 'field needs' Binary packages optimized for our 'use cases' X-less system  To the point: We have need of a specially-configured production-quality Linux distribution to be run exclusively as Para-Virtualized Production Servers. Rather than jumping through all the hoops and loops every time we need a VM-ized Server, we would very much like a semi-prepared system, optimized for its environment. Since these VMs would be Production Servers, stability is a must, and honestly the available package management systems we're currently aware of just do not provide assurance. Zypp and Conary are the closest ones to our needs, but again still miss on some points.