Anari Sim Viewer Presentation

Anari Sim Viewer

2

Anari Sim Viewer

Anari Sim Viewer (ASV) is new tool developed by Anari and it’s FREE to use.

This sim viewer is working on PyGears level of abstraction, which means signals

as: clk, rst, valid, ready will be abstracted and not visible on waveform itself.

Anari Platform Link

3

ASV - Graph & Waveform

● Graph (1)

○ Visualizes the structure of the

gears and the channels

○ Exploring the design by

navigating through the gears

○ Channels can be picked from

the graph and visualized on

the waveform

● Waveform (2)

○ Visualizes a channel’s

dataflow and state changes by

cycles

(1)

(2)

ASV is consisted of 2 main components:

4

ASV - Meaning of wave colors on waveform diagram

5

How to prepare your code for ASV

ASV is expecting JSON format as input, thus it’s needed to convert VCD to JSON

To do that adding line reg['debug/webviewer'] = True in code will do that.

JSON file will be in the same location as VCD file

6

Example of code that will generate JSON

from pygears import gear, reg

from pygears.typing import Uint

from pygears.lib import drv, collect, dreg

from pygears.sim import sim, cosim

#simulation config

reg['debug/trace'] = ['*'] #tracing all interfaces

reg['debug/webviewer'] = True #converting VCD to JSON for ASV

@gear

def add(a: Uint[4], b: Uint[4]):

return a + b | dreg #Register added for fun

def testbench():

res_list = []

drv_a = drv(t=Uint[4], seq=[4, 2])

drv_b = drv(t=Uint[4], seq=[2, 1])

add(drv_a, drv_b) \

| collect(result=res_list)

cosim(top="/add",sim="verilator",outdir="/Users/john/Downloads/add_example/",timeout=10)

sim(resdir="/Users/john/Downloads/add_example/")

testbench()

7