simdcsv

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use flag -march=native may cause trouble

1

So I got 2 different instances, both CPU supports AVX2, I was expecting the shared library built from one instance can be used in another, however that's not the case....

yuxiaorun

bad msvc performance

10

I've proposed a PR (#10) that allows to compile on MSVC. However the performance is awful (0.65GB/sec instead of 11GB/sec on the same machine, with MSVC Clang) If anybody is...

reder2000

msvc build

1

Builds with msvc. However, performance is 15x less than - gcc build (wsl) - msvc-clang builds (windows, on par with gcc)

reder2000

Fix aarch64 compilation

3

AGSaidi

Look at the competition: csv-parsers-comparison

6

https://github.com/uniVocity/csv-parsers-comparison

lemire

[+] auto-unroll

47

@geofflangdale @lemire great stuff, guys! too bad the project went stale. here's what i got: 1. fix manually unrolled loops in `flatten_bits()` which generate suboptimal code (clang -O3 auto-unrolls better,...

kelas

The index of last line of csv file has issue

5

It happens in every csv file parsing, especially there is only one line in the file

yanchris

License

5

Any chance you could switch to a more permissive license like MIT? Thanks for your hard work on this!

davidfetter

This should be a bit better. My own scores are about +5%.

lemire

For column projection, only a partial indexing is necessary

2

Terminology: Selecting a subset of columns is called a projection. Since extracting the indexes is expensive, you may want to only pick some of the indexes, never committing to memory...

lemire