Tiny RISC-V emulation distributed across a network of P4-programmable switches

Build and run code

Run make to build and run the P4 switch in a mininet environment. The controller in controller.py will run automatically and configure the switches in the network topology (defined in topology.json) to perform the RISC-V emulation. Host h99 in the network topology, representing the external datastore, will automatically run in the background the datastore server defined in datastore.py. In the case that it does not start automatically, start the datastore by executing the Python script on host h99.

Execute Tiny RISC-V programs

The network topology is configured with 3 hosts that can send Tiny RISC-V assembly programs to the load balancer for execution within the network. These hosts are h1, h2, and h3. To open up a command line on a host, run xterm <host1> [<host2> <host3> ...] in the mininet REPL.

Run the receiver on the host from which you will be sending the programs: ./receive.py

To send a test program that executes each of the available Tiny RISC-V assembly instructions: ./send.py

To send a test program that computes the 8th Fibonacci number: ./fibonacci.py

Users can execute arbitrary Tiny RISC-V assembly programs by using the instruction types defined in headers.py and sending the programs to the load balancer using a script similar to fibonacci.py.