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Posted to dev@brpc.apache.org by GitBox <gi...@apache.org> on 2022/11/10 07:14:11 UTC
[GitHub] [incubator-brpc] 372046933 opened a new pull request, #1985: Fall back to libibverbs.so.1
372046933 opened a new pull request, #1985:
URL: https://github.com/apache/incubator-brpc/pull/1985
### What problem does this PR solve?
Issue Number:
Problem Summary:
### What is changed and the side effects?
Changed:
Side effects:
- Performance effects(性能影响):
- Breaking backward compatibility(向后兼容性):
---
### Check List:
- Please make sure your changes are compilable(请确保你的更改可以通过编译).
- When providing us with a new feature, it is best to add related tests(如果你向我们增加一个新的功能, 请添加相关测试).
- Please follow [Contributor Covenant Code of Conduct](../../master/CODE_OF_CONDUCT.md).(请遵循贡献者准则).
`libibverbs.so` is provided by `libibverbs-dev` and it is a symbol link to `libibverbs.so.1` which is provided by `libibverbs1`.
We do not need `-dev` package in production environment. So linking to `libibverbs.so.1` is a better solution.
```bash
lrwxrwxrwx 1 root root 15 Jan 28 2022 /usr/lib/x86_64-linux-gnu/libibverbs.so -> libibverbs.so.1
lrwxrwxrwx 1 root root 23 Jan 28 2022 /usr/lib/x86_64-linux-gnu/libibverbs.so.1 -> libibverbs.so.1.14.39.0
-rw-r--r-- 1 root root 139K Jan 28 2022 /usr/lib/x86_64-linux-gnu/libibverbs.so.1.14.39.0
```
Here is `NCCL` usage
https://github.com/NVIDIA/nccl/blob/2f4cb874ba461f67adbd78b6f19fc5bc7c458ab7/src/misc/ibvwrap.cc#L52-L59
Other differs on `rdma.md` is necessary to enable RDMA on `libbrpc`
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[GitHub] [incubator-brpc] Tuvie commented on pull request #1985: Fall back to libibverbs.so.1
Posted by GitBox <gi...@apache.org>.
Tuvie commented on PR #1985:
URL: https://github.com/apache/incubator-brpc/pull/1985#issuecomment-1312656128
> > Could you please share how you install libibverbs? At all my servers, libibverbs.so and libibverbs.so.1 exist at the same time and the former one is a symbol link to the latter one. The latter one is also a symbol link to the real so, just like the figure you pasted above.
>
> On Ubuntu 22.04 , `libibverbs1` provides `libibverbs.so.1` and the real so.
>
> ```shell
> # dpkg -L libibverbs1
> /.
> /usr
> /usr/lib
> /usr/lib/x86_64-linux-gnu
> /usr/lib/x86_64-linux-gnu/libibverbs.so.1.14.39.0
> /usr/share
> /usr/share/doc
> /usr/share/doc/libibverbs1
> /usr/share/doc/libibverbs1/changelog.Debian.gz
> /usr/share/doc/libibverbs1/copyright
> /usr/share/doc/libibverbs1/libibverbs.md
> /usr/lib/x86_64-linux-gnu/libibverbs.so.1
> ```
>
> This is enough to use ibverbs in production environment(`libibverbs-dev` is not necessary). In development environment, `libibverbs-dev` provides header files and `libibverbs.so` as a symbol link.
Thanks for your feedback.
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[GitHub] [incubator-brpc] wwbmmm merged pull request #1985: Fall back to libibverbs.so.1
Posted by GitBox <gi...@apache.org>.
wwbmmm merged PR #1985:
URL: https://github.com/apache/incubator-brpc/pull/1985
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[GitHub] [incubator-brpc] 372046933 commented on pull request #1985: Fall back to libibverbs.so.1
Posted by GitBox <gi...@apache.org>.
372046933 commented on PR #1985:
URL: https://github.com/apache/incubator-brpc/pull/1985#issuecomment-1312472070
> Could you please share how you install libibverbs? At all my servers, libibverbs.so and libibverbs.so.1 exist at the same time and the former one is a symbol link to the latter one. The latter one is also a symbol link to the real so, just like the figure you pasted above.
On Ubuntu 22.04 , `libibverbs1` provides `libibverbs.so.1` and the real so.
```bash
# dpkg -L libibverbs1
/.
/usr
/usr/lib
/usr/lib/x86_64-linux-gnu
/usr/lib/x86_64-linux-gnu/libibverbs.so.1.14.39.0
/usr/share
/usr/share/doc
/usr/share/doc/libibverbs1
/usr/share/doc/libibverbs1/changelog.Debian.gz
/usr/share/doc/libibverbs1/copyright
/usr/share/doc/libibverbs1/libibverbs.md
/usr/lib/x86_64-linux-gnu/libibverbs.so.1
```
This is enough to use ibverbs in production environment(`libibverbs-dev` is not necessary).
In development environment, `libibverbs-dev` provides header files and `libibverbs.so` as a symbol link.
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[GitHub] [incubator-brpc] Tuvie commented on pull request #1985: Fall back to libibverbs.so.1
Posted by GitBox <gi...@apache.org>.
Tuvie commented on PR #1985:
URL: https://github.com/apache/incubator-brpc/pull/1985#issuecomment-1310027262
Could you please share how you install libibverbs? At all my servers, libibverbs.so and libibverbs.so.1 exist at the same time and the former one is a symbol link to the latter one. The latter one is also a symbol link to the real so, just like the figure you pasted above.
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