Test-case for sample accelerators in RoccExampleConfig

[Anuj]

Hi folks,

Can someone please point me to the test-cases for sample accelerators in RoccExampleConfig of the rocket core?

Thanks & regards,

Anuj Rao

Staff Researcher

Centre for Dark Silicon, UCSD

[Evgeni Krimer]

Hi Anuj,

I am aware of these two resources, HPCA workshop and a Berkeley class lab:

https://riscv.org/wp-content/uploads/2015/01/riscv-rocket-chip-tutorial-bootcamp-jan2015.pdf

http://www-inst.eecs.berkeley.edu/~cs250/sp16/assignments/lab4.pdf

Both describe a case for SHA3 accelerator.

Code used in HPCA workshop is checked in here:

https://github.com/ucb-bar/rocc-template

I had issues to follow the examples in rocc-template and got them to work at then end only when compiled using the same args as used in benchmarks in riscv-tests (sorry it has been a while so I don't have more details to share).

Hope it helps,

Evgeni

[Schuyler Eldridge]

This is actually something that I've been meaning to do as I wasn't aware of any example software available for the example RoCC accelerators (maybe I'm missing something?).

Anyway, I threw together a quick example here: https://github.com/seldridge/rocket-rocc-examples

This currently only provides software for the Accumulator example with the following functions supported:

  * doWrite

  * doRead

  * doAccum

The load from L1 isn't working for me for whatever reason (I'm tripping a SimpleHellaCaceIF assertion and I don't know if this is me, rocc.scala, or something else...). However, this should be a basic enough example to start from.

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[Evgeni Krimer]

If it helps, https://github.com/ucb-bar/rocc-template/tree/master/tests has examples.

*-sw is emulation implementation

*-rocc uses rocc  <<< I assume this is the sw example you are asking for

*-bm is a bare metal version of both (no printfs etc)