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README.md

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-# NCCL Tests
+# NCCL on macOS Tests
 
 These tests check both the performance and the correctness of NCCL operations. They can be compiled against [NCCL](http://github.com/nvidia/nccl)
 
+In order to make library and nccl-test compatible, each nccl library version will be unique mapped to nccl-test on macOS version. When you start your work from my version, please also keep in mind.
+
+* [nccl-2.5.7-1-release](https://github.com/llv22/nccl-osx/tree/dev-2.5.7-for-jax) should be tested by [nccl-tests-v2.0.0 on mac](https://github.com/llv22/nccl-tests-macOS-cuda/tree/v2.0.0-built).
+
 ## Build
 
 To build the tests, just type `make`.