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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/08/14 14:22:13 UTC
[GitHub] [arrow-datafusion] andygrove opened a new issue #882: Cannot bulid with simd feature
andygrove opened a new issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882
**Describe the bug**
```
~/release/apache-arrow-datafusion-5.0.0 via 🦀 v1.54.0
✦ ❯ cargo build --release --features "simd"
Compiling packed_simd_2 v0.3.5
error[E0554]: `#![feature]` may not be used on the stable release channel
--> /home/andy/.cargo/registry/src/github.com-1ecc6299db9ec823/packed_simd_2-0.3.5/src/lib.rs:214:1
|
214 | / #![feature(
215 | | const_generics,
216 | | repr_simd,
217 | | rustc_attrs,
... |
227 | | llvm_asm
228 | | )]
| |__^
```
**To Reproduce**
Run command above.
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[GitHub] [arrow-datafusion] Dandandan commented on issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
Dandandan commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-899055593
I changed the issue to add some docs around this.
Btw, @andygrove AFAIK the SIMD option doesn't help a lot with the TPC-H queries. Building with snmalloc or mimalloc and fat LTO (longer build time) does improve execution times.
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[GitHub] [arrow-datafusion] alamb commented on issue #882: Cannot build with simd feature
Posted by GitBox <gi...@apache.org>.
alamb commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-899037029
`cargo +nightly build --release --features "simd"`
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[GitHub] [arrow-datafusion] houqp closed issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
houqp closed issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882
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[GitHub] [arrow-datafusion] houqp commented on issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
houqp commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-913965794
I would love to have docs for the most optimized build, but we can start with SIMD if that's too much :)
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[GitHub] [arrow-datafusion] andygrove commented on issue #882: Cannot build with simd feature
Posted by GitBox <gi...@apache.org>.
andygrove commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-898900822
I am probably doing something wrong and/or we need better docs around this
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[GitHub] [arrow-datafusion] alamb commented on issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
alamb commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-899814361
I also think we should suggest building with `native` and/or at least `avx2` instructions (by default my `rustc` only used sse/sse2, presumably for compatibility)
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[GitHub] [arrow-datafusion] matthewmturner commented on issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
matthewmturner commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-913959875
Hello. I could try this. To confirm - is the idea to add docs just for SIMD? Or for the most optimized build?
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[GitHub] [arrow-datafusion] Dandandan commented on issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
Dandandan commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-900004478
Here is an example of using all the options:
https://github.com/h2oai/db-benchmark/pull/182/files
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[GitHub] [arrow-datafusion] houqp commented on issue #882: Documenting building with simd feature
Posted by GitBox <gi...@apache.org>.
houqp commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-899096504
It would be good if we can provide doc on how to produce the most optimized build: simd + snmalloc + LTO.
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[GitHub] [arrow-datafusion] jorgecarleitao commented on issue #882: Cannot build with simd feature
Posted by GitBox <gi...@apache.org>.
jorgecarleitao commented on issue #882:
URL: https://github.com/apache/arrow-datafusion/issues/882#issuecomment-898901719
I think you need the nightly channel to use simd, as packed_simd requires
nightly.
On Sat, Aug 14, 2021, 15:23 Andy Grove ***@***.***> wrote:
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