if when i try to run AVD emulator from eclipse and receiving an error like this:

Failed to allocate memory: 8
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

the solution is to edit C:\Users\<user>\.android\avd\<avd-profile-name>.avd\config.ini and change the value:

hw.ramSize=1024

to

hw.ramSize=1024MB

That’s it!