TechQuiet 86d · day 87
Lemire optimizes IP address parsing in C# using AVX-512 SIMD
A performance researcher demonstrates fast IPv4 parsing in C# leveraging recent processor instruction sets.
What to know
- Lemire demonstrates IPv4 address parsing in C# using AVX-512 SIMD instructions, a technique now practical with .NET 10 support.
- Masked loads allow efficient handling of variable-length strings without buffer overruns, solving the challenge of UTF-16 encoding overhead in C#.
- The researcher advocates for .NET standard library adoption of such optimizations, having previously proposed similar contributions for Unicode validation and base64 decoding.
“A nice approach is to have masked loads where you, say, load the full register (say 16 bytes), but you indicate which bytes you want to be loaded from memory with a mask.”
Daniel Lemire · lemire.me blog
Daniel Lemire Performance researcher and author
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