[Libre-soc-bugs] [Bug 394] New: Reach out to developers of 'BlackParrot' RV64GC Multicore SoC

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=394

            Bug ID: 394
           Summary: Reach out to developers of 'BlackParrot' RV64GC
                    Multicore SoC
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Source Code
          Assignee: lkcl at lkcl.net
          Reporter: colepoirier at gmail.com
                CC: libre-soc-bugs at lists.libre-soc.org
   NLnet milestone: ---

*will insert mailing list archive link here once it catches up...*

```
Going to create some bug reports related to what we can learn from a
multicore RV64GC SOC, "BlackParrot: A Linux-Capable Accelerator Host Multicore"
https://github.com/black-parrot/black-parrot

Especially their branch predictor and cache-coherency code, and their
14nm tapeout experience from july 2019.
```

Collection of info I found with a very quick search, to be followed up on

```
BlackParrot aims to be the default Linux-capable, cache-coherent, RV64GC
multicore used by the world.

Project Status

The next release of BlackParrot, v 1.0, is coming in January 2020, and will
contain support for 1 to 24-way cache coherent multicore, and include baseline
user and privilege mode functionality and run Linux.

A 14-nm BlackParrot multicore chip was taped out in July 2019.

https://github.com/enjoy-digital/black-parrot

https://github.com/enjoy-digital/black-parrot/blob/master/GETTING_STARTED.md

https://github.com/black-parrot/black-parrot

"BlackParrot: An Agile Open Source RISC-V Multicore for Accelerator SoCs"

https://ieeexplore.ieee.org/document/9097398

Published in: IEEE Micro ( Early Access )
Page(s): 1 - 1
Date of Publication: 20 May 2020
ISSN Information:
DOI: 10.1109/MM.2020.2996145
Publisher: IEEE

Open access of same:
https://pdfs.semanticscholar.org/f4e8/fc065db9fadcb6b800718bd1f083ffac058a.pdf
```

Subtasks which may need their own bug report in the future:

* look at their branch predictor implementation
* look at their cache coherency implementation
* contact BlackParrot devs about their July 2019 14nm tapeout to see if they
are willing to talk about it, see if we can gain any useful insights from them

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