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Binary Arithmetic and Bitwise Operations for Systems Programming
Understand how computers represent numbers and perform operations at the bit level before diving into assembly
Apr 12
•
Abhinav Upadhyay
17
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Confessions of a Code Addict
Binary Arithmetic and Bitwise Operations for Systems Programming
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Seeing the Matrix: A First-Principles Approach to Computer Architecture
Building a mental model of computer architecture from first principles
Apr 5
•
Abhinav Upadhyay
32
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Confessions of a Code Addict
Seeing the Matrix: A First-Principles Approach to Computer Architecture
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March 2025
Hardware-Aware Coding: CPU Architecture Concepts Every Developer Should Know
Write faster code by understanding how it flows through your CPU
Mar 21
•
Abhinav Upadhyay
86
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Confessions of a Code Addict
Hardware-Aware Coding: CPU Architecture Concepts Every Developer Should Know
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Python Performance: Why 'if not list' is 2x Faster Than Using len()
Discover why 'if not mylist' is twice as fast as 'len(mylist) == 0' by examining CPython's VM instructions and object memory access patterns.
Mar 12
•
Abhinav Upadhyay
29
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Confessions of a Code Addict
Python Performance: Why 'if not list' is 2x Faster Than Using len()
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2
February 2025
My Top 15 OS Books: From Theory and Implementation to Systems Programming
A personal guide to the most useful books for understanding operating systems
Feb 18
•
Abhinav Upadhyay
35
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Confessions of a Code Addict
My Top 15 OS Books: From Theory and Implementation to Systems Programming
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6
Recording: How Modern CPUs Execute Your Code: A Deep Dive into Performance
Watch now | We concluded the latest live session yesterday.
Feb 10
•
Abhinav Upadhyay
16
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Confessions of a Code Addict
Recording: How Modern CPUs Execute Your Code: A Deep Dive into Performance
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1:21:15
January 2025
A Software Engineer's Guide to Reading Research Papers
My personal framework for reading research papers.
Jan 28
•
Abhinav Upadhyay
141
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Confessions of a Code Addict
A Software Engineer's Guide to Reading Research Papers
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Launching Live Courses on Systems Programming
Modern software development has created a paradox: we build increasingly complex systems, yet fewer engineers understand how these systems work under…
Jan 25
•
Abhinav Upadhyay
46
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Confessions of a Code Addict
Launching Live Courses on Systems Programming
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2
Linux Context Switches: The Truth About TLB Flushes
Watch now (22 mins) | Is the TLB really flushed during context switches?
Jan 17
•
Abhinav Upadhyay
13
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Confessions of a Code Addict
Linux Context Switches: The Truth About TLB Flushes
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21:34
Live Session: How Modern CPUs Execute Your Code: A Deep Dive into Performance
I hope you enjoyed the recent article on how Unix spell was designed to lookup a 250kB dictionary on a 64kB machine. Writing it wore me down.
Jan 14
•
Abhinav Upadhyay
7
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Confessions of a Code Addict
Live Session: How Modern CPUs Execute Your Code: A Deep Dive into Performance
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How Unix Spell Ran in 64kB RAM
How do you fit a dictionary in 64kb RAM? Unix engineers solved it with clever data structures and compression tricks. Here's the fascinating story…
Jan 12
•
Abhinav Upadhyay
99
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Confessions of a Code Addict
How Unix Spell Ran in 64kB RAM
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1
December 2024
Linux Context Switching Internals: Part 1 - Process State and Memory
How does the Linux kernel represent processes and their state: A breakdown of task_struct and mm_struct
Dec 29, 2024
•
Abhinav Upadhyay
49
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Confessions of a Code Addict
Linux Context Switching Internals: Part 1 - Process State and Memory
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