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@tweetandcode
tweetandcode / 8080_disass.c
Last active August 3, 2025 21:15
#include <stdio.h>
#include <stdint.h>
char segoverride[4] = "";
char buffer[100];
#define parse_mod_reg_rnm \
fread(&b, 1, 1, f); \
int mod = (b >> 6) & 0x03; \
int reg = (b >> 3) & 0x07; \
@pmttavara
pmttavara / tscqpc.h
Last active October 14, 2025 08:48
Obtain RDTSC frequency on Win32 and Linux
// SPDX-FileCopyrightText: © 2022 Phillip Trudeau-Tavara <pmttavara@protonmail.com>
// SPDX-License-Identifier: 0BSD
// https://hero.handmade.network/forums/code-discussion/t/7485-queryperformancefrequency_returning_10mhz_bug/2
// https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/tlfs/timers#partition-reference-tsc-mechanism
#include <stdbool.h>
#include <stdint.h>
#define WIN32_LEAN_AND_MEAN
@xdralex
xdralex / checklist.md
Created April 19, 2021 13:39
ML/DL/CS Checklist

Deep Learning

concepts

  • forward and backward propagation
  • vanishing gradient
  • image convolution operation
  • feature map, filter/kernel
  • receptive field
  • embedding
  • translation invariance
@mcleary
mcleary / Timer.cpp
Last active September 6, 2025 20:49
C++ Timer using std::chrono
#include <iostream>
#include <chrono>
#include <ctime>
#include <cmath>
class Timer
{
public:
void start()
{
@jboner
jboner / latency.txt
Last active March 23, 2026 07:16
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD