Chisel 中的矩阵运算

Matrix Operations in Chisel

Chisel是否支持加法、乘法、转置等矩阵运算?如果没有,实现它们的最佳方法是什么?

向量呢?

Chisel 不支持矩阵运算。它是一种 DSL,用于编写实现此类操作的硬件生成器。有关专用数学硬件生成器的示例,请参阅:Hwacha: A hardware vector unit and DspTools: a set of math tools

是的,您可以借助向量在 Chisel 中进行矩阵运算。我想出的代码如下(输入矩阵的大小为 3x5 和 5x2)。

package matrixmult

import chisel3._
import chisel3.iotesters.{PeekPokeTester, Driver}
import scala.collection.mutable.ArrayBuffer

class MatMult extends Module {
  val io = IO(new Bundle {
    val matA   = Input(Vec(15, UInt(32.W)))
    val matB   = Input(Vec(10, UInt(32.W)))
    val load  = Input(Bool())
    val matC = Output(Vec(6, UInt(32.W)))
    val valid = Output(Bool())
  })
  var sum = UInt(32.W)
  val matC = new ArrayBuffer[UInt]()

  for(i <- 0 until 6) {                
        matC += 0.asUInt(32.W)
  }

  when (io.load) {
    for(i <- 0 until 3) {
        for(j <- 0 until 2) {
            sum = 0.asUInt(32.W)
            for(k <- 0 until 5)
            {
                sum = sum + matA(i*5+k)*io.matB(k*2+j)

            }
            matC(i*2 + j) = sum
        }
    }
  io.valid := true.B
  } .otherwise {
    io.valid := false.B     
  }   

  val outputMat = Vec(matC)
  io.matC := outputMat   

}