virtual-machine

"all java interpreter are JVM but all JVM are not java interpreter" ?

can anybody explain "all java interpreter are JVM but all JVM are not java interpreter" ? I am really confused as JVM is used for to run java program only or it can do anything else too. ...

How to test a small kernel in a VM?

Say I developed a small kernel and I wanted to try it out in a VM. If I have the kernel image, how would I get it into a VM in VirtualBox, for example? More importantly, how do I get a bootloader like Grub installed into the VM? ...

AS400 Emulator or Virtual Machine

Do these exist? Can you recommend one? ...

Open souce virtual machine

I'm looking for a fast and much lightweight as possible open source virtual machine for implementing my custom programming language. The virtual machine should support some minimal set of bytecode (like LLVM IR), but can easily embedable from a C++ application (which filters out LLVM from the list). It should be wrriten in C/C++. I'm l...

How can i test the interactions between 2 or more clients on different VMs?

I need to test the interactions between 2 ore more java clients in a complete end-to-end test. Without the GUIs ideally it should be something similar to (Junit syntax): @Test public void EndToEndTest(){ App firstApp = new App(); App secondApp = new App(); String msg = "something"; firstApp.send(msg); //this method will...

copy objects between different Virtual-Machines efficiently

I have a feeling that I am going to ask a "stupid" question, yet I must ask ... I have 2 virtual machines. I would like to copy an instance of an object from one to another, Is it possible to copy the bits that represents this object in the VM's heap, send it to the other VM, like that the other VM just need to allocate the bits in it...

How can be bytecode used for optimizing the execution time of dynamic langauges?

I am interested in some optimization methods or general bytecode designs, which might help speed up execution using VM in comparison to interpretation of an AST. ...

Zend Virtual Machine Advantages

Hi all, I was trying to understand the working of Zend with the help of this excellent article. Its when I found out that Zend Engine was a Virtual Machine. Now my question is whats the advantage of creating an intermediate code for scripting languages like php? I can understand that having Intermediate Code in the case of prog...

How can virtualization solve dev/prod environment kinda problems during deployment?

I'm really trying to use best-practices for dependencies management in my web apps but stuff happens. Some problems arise in production only anyways. I want to minimize this as much as possible. I was thinking that If I can test new deployments in a virtual machine with the latest production snapshot this can solve this problem to a cer...

serial (and/or parallel) port communication simulation with virtual machine

I am making a windows upper filter driver for serial and parallel ports. I want to test it in a virtual machine and I need some sort of software that can simulate communication over these ports with the VM. Any hints? ...

What are alternatives to the Java VM?

As Oracle sues Google over the Dalvik VM it becomes clear, that you cannot implement a Java VM without license from Oracle (EDIT: Matthew Flaschen points out, that the claims of Oracle may not be valid. Anyways we have currently a situation, where Oracle threats VM-implementations.). That may become the death for Open-Source-implementati...

Windows Server 2008, Virtual PC and TFS

I have 3 computers at home. 2 laptops and 1 desktop. The 2 laptops are 32 bit. The desktop is a 64 bit. My desktop is considerably new and fast and so that is my developer PC at home. my laptops are ok, but not as fast so I use them for mundane tasks such as mails, messenger, twitter, etc. Now I want to install TFS on Windows Server 20...

Windows 7 Virtual machine .Net Webclient System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required.

What may cause System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required. Windows webclient on Windows 7 virtual machine WebClient client = new WebClient(); client.DownloadFile(Uri, "test.html"); // fails string html = client.DownloadString(Uri); // fails I can't see a...

Anyone successfully using Visual Studio/IIS/SQL Server on a Windows 7 VM on Linux host for work?

I'm getting sick of various annoyances about Windows 7 like permissions and crap like that, but I need to run it for development. Any one run Windows 7 VM with development environment for .NET and a local SQL DB (as well as IIS) on top of an Ubuntu host as their work station? If so what have you found to be the best Virtualization softwa...

How to set permissions on a local virtual directory mapped to an UNC directory

I'm trying to set up test environment that includes a VM (running Win7-x86) hosted on Win7-x64. I want to be able to use VS2010 in the VM, to work on a web application project on the host machine. So I've set up a virtual directory on the VM, and set its physical path as an UNC path. I've set the physical path credential to be an ad...

Virtualbox problems on Windows emulation

Hello, I've been experiencing a problem with Virtualbox on my Fedora 13. When I try to setup virtual machine instance with Windows it just hangs the system with no reaction on keyboard commands with no respond to anything except physical halting. Please help what might be the problem? Sultan ...

Multiple users on Amazon EC2

Is it possible to have multiple users to manage an Amazon EC2 environment? I want to give access to several additional people to create machines on my existing billing account. ...

how to make winxp ms-dos virtual machine work like win98 ms-dos especially graphics

Hi, Initially... I started programming in C. that was was 10 years back(college). The IDE i used was Turbo C++ IDE. All my c programs were 16bit. Memory Model : Huge. Graphics : 4bit (16 colors). Graphics Driver: EGAVGA.BGI Resolution: 640x480. OS: MS-DOS 6.0 (under windows98 it is 7.0 - which always gave an accelerated execution of...

How to find out what optimizations the JVM applied to my code?

The JVM (especially the HotSpot VM) is famous for having a huge number of optimizations it can apply at runtime. Is there a way to look at a certain piece of code and see what the JVM has actually done to it? ...

VMWare Server 2.0.2, VM can't find name of physical machine

I'm using VMWare Server 2.0.2. My VM is a WinXP VM. The physical machine is running Windows 7 64 bit. The VM can't ping the name of the physical machine, though it can ping other machines on the network running Windows XP. The physical machine can ping the VM. I'm using a wireless router as my DNS server. The other WinXP machines on the ...