* Add a FIFO test code that reproduced a correctness issue
* Fix the correctness issue by using pinned memory instead of cudaMemcpy
---------
Co-authored-by: Binyang Li <binyli@microsoft.com>
First step to merge msccl-tools into mscclpp repo. In this step will
move all msccl related code, pass the current tests and do some
necessary refactor.
Add `mscclpp.language` module
Add `_InstructionOptimizer` and `DagOptimizer` class to optimize the dag
Add `DagLower` to lower dag to intermediate representation
Add documents for mscclpp.language
Remove msccl related code
* Renamed `ProxyChannel` -> `BaseProxyChannel` and `SimpleProxyChannel`
-> `ProxyChannel`. It makes the interface more consistent by defining
channels to be associated with a certain src/dst memory region:
`ProxyChannel` as "sema + src/dst + fifo" and `SmChannel` as "sema +
src/dst". BaseProxyChannel is not associated with any memory regions, as
"sema + fifo".
* `ProxyChannelDeviceHandle` now inherits from
`BaseProxyChannelDeviceHandle`, instead of having one as a member.
Fix#126
- Put `std::shared_ptr<SmDevice2DeviceSemaphore>` into the `SmChannel`
- add a `DeviceHandle` struct in `SmChannel`
- add `DeviceHandle` template
Users need to write code like this to use channel in device side:
```
using DeviceHandle = mscclpp::DeviceHandle<T>;
__device__ DeviceHandle<mscclpp::SimpleProxyChannel> channel;
__device__ DeviceHandle<mscclpp::SmChannel> smChannel;
```
To cover a channel to deviceHandle, need to call this function:
`mscclpp::deviceHandle(SimpleProxyChannel or SmChannel)`
---------
Co-authored-by: Changho Hwang <changhohwang@microsoft.com>
