web farm application issue with compilation

I have an application in a web farm which it consists of 4 web servers. Every time I made a change on the application and I upload it o开发者_运维技巧n the server I am getting an error which said that the *.DLL isn't available.

I upload the DLLs on the master server via ftp and the other servers gets the newer version with replication . It gets compiled on the 1st server and I have to await until it gets compiled on the other servers as well.

Let's say that I have 50 web servers, how could I avoid the compilation on all the servers.

Is there any workaround for this?

Thanks