[Weekly Review] 2020/03/02-08

Published: March 08, 2020 by SingularityKChen (Last updated: March 08, 2020 )

• Categories:
• WeeklyReview 81

• Tags:
• Chisel 22
• Linux 4

• 2020/03/02-08
  • Chisel
    • DecoupledDriver
  • Linux
    • Tree

2020/03/02-08

This week, I worked out the architecture details of Eyeriss V2, and I modified the logic of ProcessingElement, also separated inAct data connections and control logics out of PE Cluster top, making it more clearly and convenient for testing.

Plus, I modified this blog, separated all read papers.

I read two papers as well:

1. An efficient kernel transformation architecture for binary- and ternary-weight neural network inference
2. Hardware for Machine Learning: Challenges and Opportunities

Chisel

Connection between left (Bool(Wire in PECluster)) and source (Bool(Wire in PECluster)) failed @: Locally unclear whether Left or Right (both internal)

wireVec(i)(j) <> connectedWireVec((i + j + 2) % 3)

I connect wire with <>, so I need to change it with :=.

Connection between left (CSCStreamIO(Wire in WeightRouter)) and source (CSCStreamIO(OpResult in WeightRouter)) failed @.dataIOs.data.bits: Locally unclear whether Left or Right (both internal)

internalDataWire <> Mux(inSelWire, io.dataPath.inIOs(1), io.dataPath.inIOs.head)

We can change it with when condition.

  when (inSelWire) {
    internalDataWire <> io.dataPath.inIOs(1)
  } .otherwise {
    internalDataWire <> io.dataPath.inIOs.head
  }

The MuxLookup should change to when elsewhen otherwise too.

DecoupledDriver

When I used DecoupledDriver.enqueue, I met this error.

We just need to setSourceClock.

theTopIO.dataStream.ipsIO.setSourceClock(theClock)

And setSinkClock is need for ready signal.

Linux

Tree

$singularity:~/chipyard/sims/verilator$ tree -L 2
.
├── generated-src
│   └── example.TestHarness.TinyRocketConfigTest
├── Makefile
├── simulator-example-TinyRocketConfigTest-debug
├── verilator_install
│   ├── install
│   ├── src
│   └── verilator-4.016.tar.gz
└── verilator.mk

5 directories, 4 files

tree -a:

tree -d:

tree -L [number]:

tree -f: