mohamed

#!/usr/bin/env sh

set -euv

# Updated on April 2019 to reflect changes in GN
# See:
# https://github.com/ninja-build/ninja
# https://gn.googlesource.com/gn/

# We need a recent git

mohamed

High-Performance Matrix Multiplication

This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).

Intro

Matrix multiplication is a mathematical operation that defines the product of

mohamed

Using the DECA board with LiteX

1. Follow LiteX installation steps outlined here

2. Install Intel Quartus Prime (Lite Edition) from here

3. Build and run the example shipped with LiteX:

$ cd litex-boards/litex_boards/targets

mohamed

#!/usr/bin/env bash
# journal.sh
# ==========
#
# One daily text file to rule them all.
#
# Copyright: 2022 Tyler Cipriani <tyler@tylercipriani.com
# License: GPLv3

set -euo pipefail

mohamed

import pyaudio
import matplotlib.pyplot as plt
import numpy
import wave


FORMAT = pyaudio.paInt16                # We use 16bit format per sample
CHANNELS = 1
RATE = 44100
CHUNK = 1024                            # 1024bytes of data red from a buffer

mohamed

"""
Tarjan's strongly connected components algorithm + Topological sort
Taken from: http://www.logarithmic.net/pfh/blog/01208083168
Public domain. Use it as you will
"""


def strongly_connected_components(graph):
    """
    Tarjan's Algorithm (named for its discoverer, Robert Tarjan) is a graph

mohamed

# Run with make SIM=verilator

TOPLEVEL_LANG = verilog
VERILOG_SOURCES = $(shell pwd)/skid_buffer.sv
TOPLEVEL = skid_buffer
MODULE = skid_buffer_tb
EXTRA_ARGS += --coverage --trace-fst --trace-structs

include $(shell cocotb-config --makefiles)/Makefile.sim

mohamed

mohamed

Setting up RISC-V toolchain and simulator

This guide explains the steps needed to build the compiler and simulator toolchain for RISC-V ISA. It assumes RV32GC instruction extension.

Tool links:

• GNU GCC Compiler: https://github.com/riscv/riscv-gnu-toolchain
• LLVM Compiler: https://github.com/llvm/llvm-project.git
• Proxy Kernel (to map syscalls from binary to OS): https://github.com/riscv-software-src/riscv-pk

mohamed

Compiling baremetal C program for Arm Cortex-M0+

1. Install Arm GNU GCC compiler. Download the tar.xv archive from: https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads Define the environmet variable $ARM_GCC_ROOT to point to the location where you extract this archive. This guide was tested with arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-eabi

2. Update your $PATH and $LD_LIBRARY_PATH as follows:

   setenv PATH $ARM_GCC_ROOT/bin:$PATH
   

setenv LD_LIBRARY_PATH $ARM_GCC_ROOT/lib:$LD_LIBRARY_PATH