Usage

The design space explorer is run through by using the ss_sched command, with the -x flag. To run the scheduler by default run:

Important

Currently the Design-Space Explorer only explorers fpga-based accelerators and doesn’t support ASIC-based optimization. Thus it must be run with the -f flag.

The design-space explorer shares the same flags as the default scheduler.:

• -e or –seed

  Sets the random seed for the scheduler. This defaults to a random value.

• –dse-timeout

  Sets the timeout for the DSE process, in seconds. This defaults to -1 or no timeout.

• -w or –sched-workers

  The number of workers used during scheduling. Workers schedule different dfg files in parallel. Defaults to 1.

File Outputs

The design-space explorer outputs a number of files to the vis directory. The files are:

• objectives.csv

  A logfile of different dse-iterations. Useful for debugging and visualizing the design-space explorers progress.

• final-schedadg.json

  The produced adg file from the dse. Contains extra fields describing the system parameters and information about how the finalized schedules were mapped onto the accelerator.

• prunned-schedadg.json

  The prunned version of final-schedadg. Contains extra fields describing the system parameters and information about how the finalized schedules were mapped onto the accelerator.

• iters directory

  A directory containing improved schedules. Each time the DSE improves the ADG, it will store that iterations ADG within this folder. This folder is useful for understanding what the DSE did at each iteration.