simulating acoustics and mechanics?

Do you know any open source software which I could be using
to simulate instruments acoustics and mechanics.
Proprietary software providers told me that RAM is important to them for tasks like this.
So may I also ask why Parallella only has 1 GB of RAM ?
to simulate instruments acoustics and mechanics.
Proprietary software providers told me that RAM is important to them for tasks like this.
So may I also ask why Parallella only has 1 GB of RAM ?