Learning to Use CSIM Perf. Mod. Lib. - Example II

A New User's Second Model

The following is a step-by-step tutorial of how to extend the model created in tutorial one, A New User's First Model.

Step 1:
Add a Bus
and a
Third
Processor A.) Open the GUI to your hardware architecture.
Either type gui architecture.sim and hit enter at the command line, or select File/Open from within the GUI.
B.) Zoom-Out so you can add new boxes.
C.) Replicate one of the processors, by:

Select one of the existing processor boxes by pointing at it in Select/Move mode.
Hit Edit/Copy, or control-C, to copy the object.
Hit Edit/Paste, or control-V, to paste the object.
Move the replicated processor below the other two.
Open it's properties to set it's instance name to processor_C.
D.) Add a new box to the left of the existing boxes.
Set it's instance name to be Bus.
Set it's type to be local_bus.
(Hint: Use the Types button next to the Type-Name field.)

E.) Move the link connecting processor_A and processor_B so that it connects processor_A to the Bus.
Do this in Select/Move mode by grabbing the vertex (arrow) attached to processor_B and swinging it over to the Bus
F.) Replicate the link to connect the other two processors to the bus.

Do this in Select/Move mode by selecting the link,
Hit Edit/Copy, or control-C, to copy the link.
Hit Edit/Paste, or control-V, to paste the link.
Move the replicated link to connect processor_B to the Bus.
Repeat for processor_C.
G.) Edit the properties of the three links to set the second port-name to p0, p1, and p3, respectively, for the three link connections to the Bus. (Hint: Use the Names button next to the port-name field.)
The diagram should appear as shown here:

H.) Save your diagram: File / Save

You have now expanded the hardware architecture model.

Step 2:
Build
Hardware Select: Tools / Build Simulation
Watch the text window from which you launched the GUI for messages about the status of the build-processing.

Step 3:
Update
Routing
Table Select: Tools / Build Routing Table
Because you changed the hardware architecture, it is necessary to re-build the routing table.

Step 4:
Expand
Software
Application
Graph A.) Open the GUI to your software Data Flow Graph.
Either type gui DFG_1.dfg and hit enter at the command line, or select File/Open from within the GUI. You should see your old graph.
B.) Add two new nodes to your data flow graph.
Connect the nodes with arcs.
Make the graph appear as this:
C.) Set the properties of the new boxes to be:

Instance Name = Task_X
Compute Time = 5
Map PE = /processor_C
For the one box, and for the other:

Instance Name = Task_Y
Compute Time = 5
Map PE = /processor_C
D.) Set the properties of the new arc to be:
For the arc connecting the START box and the Task_X box:

Produce Amount = 40
Threshold Amount = 10
Consume Amount = 10
For the arc connecting the Task_Q box and the Task_Y box:

Produce Amount = 10
Threshold Amount = 10
Consume Amount = 10
For the arc connecting the Task_X box and the Task_Y box:

Produce Amount = 10
Threshold Amount = 10
Consume Amount = 10
The port names do not matter here.
E.) Save your diagram: File / Save
You have now expanded your application Data Flow Graph (DFG).

Step 5:
Build
Software Select: Tools / Build DFG SW
Watch the text window from which you launched the GUI for messages about the status of the build-processing.
You can plot the ideal timeline by: Tools / Plot Ideal Timeline.
It should look like:

Note that the ideal time-line does not consider actual data transfer delays nor the effects of contentions on such transfers. Only task computation sequences and concurrencies are considered.

Step 6:
Run the
Simulation Select: Tools / Run Simulation
The simulation control panel window will pop up.
Hit Run/Cont..

Step 7:
View
Time-Line
Results Select: Tools / Plot Comm+Proc TLine
The graph should appear as:
The diagonal or vertical lines represent the data transfers between processors. The horizontal lines indicate the processing of tasks. Dismiss the graph.

(Questions, Comments, & Suggestions: admin@csim.com)

Step 1: Add a Bus and a Third Processor	A.) Open the GUI to your hardware architecture. Either type gui architecture.sim and hit enter at the command line, or select File/Open from within the GUI. B.) Zoom-Out so you can add new boxes. C.) Replicate one of the processors, by: Select one of the existing processor boxes by pointing at it in Select/Move mode. Hit Edit/Copy, or control-C, to copy the object. Hit Edit/Paste, or control-V, to paste the object. Move the replicated processor below the other two. Open it's properties to set it's instance name to processor_C. D.) Add a new box to the left of the existing boxes. Set it's instance name to be Bus. Set it's type to be local_bus. (Hint: Use the Types button next to the Type-Name field.) E.) Move the link connecting processor_A and processor_B so that it connects processor_A to the Bus. Do this in Select/Move mode by grabbing the vertex (arrow) attached to processor_B and swinging it over to the Bus F.) Replicate the link to connect the other two processors to the bus. Do this in Select/Move mode by selecting the link, Hit Edit/Copy, or control-C, to copy the link. Hit Edit/Paste, or control-V, to paste the link. Move the replicated link to connect processor_B to the Bus. Repeat for processor_C. G.) Edit the properties of the three links to set the second port-name to p0, p1, and p3, respectively, for the three link connections to the Bus. (Hint: Use the Names button next to the port-name field.) The diagram should appear as shown here: H.) Save your diagram: File / Save You have now expanded the hardware architecture model.
Step 2: Build Hardware	Select: Tools / Build Simulation Watch the text window from which you launched the GUI for messages about the status of the build-processing.
Step 3: Update Routing Table	Select: Tools / Build Routing Table Because you changed the hardware architecture, it is necessary to re-build the routing table.
Step 4: Expand Software Application Graph	A.) Open the GUI to your software Data Flow Graph. Either type gui DFG_1.dfg and hit enter at the command line, or select File/Open from within the GUI. You should see your old graph. B.) Add two new nodes to your data flow graph. Connect the nodes with arcs. Make the graph appear as this: C.) Set the properties of the new boxes to be: Instance Name = Task_X Compute Time = 5 Map PE = /processor_C For the one box, and for the other: Instance Name = Task_Y Compute Time = 5 Map PE = /processor_C D.) Set the properties of the new arc to be: For the arc connecting the START box and the Task_X box: Produce Amount = 40 Threshold Amount = 10 Consume Amount = 10 For the arc connecting the Task_Q box and the Task_Y box: Produce Amount = 10 Threshold Amount = 10 Consume Amount = 10 For the arc connecting the Task_X box and the Task_Y box: Produce Amount = 10 Threshold Amount = 10 Consume Amount = 10 The port names do not matter here. E.) Save your diagram: File / Save You have now expanded your application Data Flow Graph (DFG).
Step 5: Build Software	Select: Tools / Build DFG SW Watch the text window from which you launched the GUI for messages about the status of the build-processing. You can plot the ideal timeline by: Tools / Plot Ideal Timeline. It should look like: Note that the ideal time-line does not consider actual data transfer delays nor the effects of contentions on such transfers. Only task computation sequences and concurrencies are considered.
Step 6: Run the Simulation	Select: Tools / Run Simulation The simulation control panel window will pop up. Hit Run/Cont..
Step 7: View Time-Line Results	Select: Tools / Plot Comm+Proc TLine The graph should appear as: The diagonal or vertical lines represent the data transfers between processors. The horizontal lines indicate the processing of tasks. Dismiss the graph.