asm
avo
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| asm | avo | |
|---|---|---|
| 4 | 10 | |
| 845 | 2,590 | |
| 0.9% | - | |
| 0.0 | 7.1 | |
| 6 months ago | 22 days ago | |
| Go | Go | |
| MIT No Attribution | BSD 3-clause "New" or "Revised" License |
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asm
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Quickly checking that a string belongs to a small set
We took a similar approach in our JSON decoder. We needed to support sets (JSON object keys) that aren't necessarily known until runtime, and strings that are up to 16 bytes in length.
We got better performance with a linear scan and SIMD matching than with a hash table or a perfect hashing scheme.
See https://github.com/segmentio/asm/pull/57 (AMD64) and https://github.com/segmentio/asm/pull/65 (ARM64). Here's how it's used in the JSON decoder: https://github.com/segmentio/encoding/pull/101
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Changing one character wildly improved our application's performance
OP here, the algorithms we use give us about 5-10x the performance of the standard library sort, even compared against the new pdqsort in Go 1.19. https://github.com/segmentio/asm/pull/77
- Go library providing algorithms optimized for modern CPUs
- Segmentio/asm – Go library of algorithms optimized to leverage modern CPUs
avo
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From slow to SIMD: A Go optimization story
I wonder whether avo could have been useful here?[1] I mention it because it came up the last time we were talking about AVX operations in go.[2]
1 = https://github.com/mmcloughlin/avo
2 = https://news.ycombinator.com/item?id=34465297
- Portable Efficient Assembly Code-Generator in Higher-Level Python (PeachPy)
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How to Use AVX512 in Golang
I thought the /r/golang comments on this post were pretty useful[1]. They also introduced me to avo[2], a tool for generating x86 assembly from go that I hadn't seen before. There are some examples listed on the avo github page for generating AVX512 instructions with avo.
1 = https://www.reddit.com/r/golang/comments/10hmh07/how_to_use_...
2 = https://github.com/mmcloughlin/avo
For writing AVX512 from scratch avo is a much better alternative.
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SIMD Accelerated vector math
Avo is a library that simplifies writing complex go assembly, I found it very useful to figure out how instructions map onto Go's asm syntax. But you could definitely do the translation directly, it's what c2goasm did (couldn't get it to work reliably unfortunately).
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HaxMap v0.2.0 released, huge performance improvements and added support for 32-bit systems
Curious if you're looking at using avo to write the assembly
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HaxMap, a concurrent hashmap faster and more memory-efficient than golang's sync.Map
You can use github.com/mmcloughlin/avo for generating the assembly use Go.
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S2: Fully Snappy compatible compression, faster and better
For normal and "better" mode I am using avo to generate different encoders for different input sizes, with and without Snappy compatibility. That currently outputs about 17k lines of assembly.
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Branchless Coding in Go (Golang)
You could perhaps just have the Go compiler generate the assembler for your code:
go tool compile -S file.go > file_amd64.s
Then you could verify it doesn't change over time, and choose to begin maintaining by hand if it makes sense.
If you do want to go the route of rolling it yourself, I'd suggest looking into something like Avo: https://github.com/mmcloughlin/avo
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High precision timer loop.
If you have to go with Assembly, try Avo https://github.com/mmcloughlin/avo
What are some alternatives?
sha256-simd - Accelerate SHA256 computations in pure Go using AVX512, SHA Extensions for x86 and ARM64 for ARM. On AVX512 it provides an up to 8x improvement (over 3 GB/s per core). SHA Extensions give a performance boost of close to 4x over native.
sonic - A blazingly fast JSON serializing & deserializing library
faasd - A lightweight & portable faas engine
photoscope - Journey into photo management with golang
rjson - A fast json parser for go
gperf - mirror of git.savannah.gnu.org/gperf.git with more features. gitlab has the issues
dingo - Generated dependency injection containers in go (golang)
encoding - Go package containing implementations of efficient encoding, decoding, and validation APIs.
gorse - Gorse open source recommender system engine
zig - General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
kobopatch-patches - Patches for use with kobopatch.