Bug 394 - Reach out to developers of 'BlackParrot' RV64GC Multicore SoC
Summary: Reach out to developers of 'BlackParrot' RV64GC Multicore SoC
Alias: None
Product: Libre-SOC's first SoC
Classification: Unclassified
Component: Source Code (show other bugs)
Version: unspecified
Hardware: PC Linux
: --- enhancement
Assignee: Cole Poirier
Depends on:
Reported: 2020-06-20 01:40 BST by Cole Poirier
Modified: 2020-08-03 20:41 BST (History)
1 user (show)

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Description Cole Poirier 2020-06-20 01:40:41 BST
*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"

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.




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


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
Comment 1 Cole Poirier 2020-07-29 21:41:44 BST
What do you technically literate people want me to ask about the BlackParrot project/SOC? From the description, at least their branch predictor implementation, and their cache coherency implementation? Or perhaps it's best to wait until you've had time to take a proper look at those implementations first. So, in that case, what do you want to ask them?
Comment 2 Cole Poirier 2020-08-03 20:41:49 BST
There are insufficient similarities between our project and theirs for a dialogue to be fruitful.