Sean Karlage
3eda60a031
static: Enable true rccl static library build (#1379)
* static: Enable true rccl static library build
Rccl uses `-fgpu-rdc` to compile, which requires a specialized link command in order to produce a true static library.
When "linking" with `amdclang++`, you need to use `--emit-static-lib` and `--hip-link` to get a static library with all gpu code generated. Subsequent links with binaries do not need any special flags to generate gpu code.`
Building a static library:
```
$ cmake -DROCM_PATH=$ROCM_PATH -DCMAKE_PREFIX_PATH=$ROCM_PATH -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=off -DCMAKE_POSITION_INDEPENDENT_CODE=on -DAMDGPU_TARGETS=gfx942 -DCMAKE_CXX_COMPILER=$ROCM_PATH/lib/llvm/bin/amdclang++ -DCMAKE_C_COMPILER=$ROCM_PATH/lib/llvm/bin/amdclang .. 2>&1 | tee -a /tmp/build.txt
-- Could NOT find GTest (missing: GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY) (Required is at least version "1.11")
-- Checking for ROCm support for GPU targets: gfx942
-- Compiling for gfx942
-- Could NOT find GTest (missing: GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY) (Required is at least version "1.11")
-- ROCM_PATH found: /opt/rocm
-- Compiling with amdclang++
-- HIP compiler: clang
-- HIP runtime: rocclr
-- amdclang++ executable: /opt/rocm/llvm/bin/amdclang++
-- amdclang++ version: 18.0.0git
-- hipconfig executable: /opt/rocm/bin/hipconfig
-- amdclang++ HIP version: 6.2.41133
-- ROCm version: 6.2.0
...
$ make -j 32
[ 0%] Updating git_version.cpp if necessary
-- Updating git_version.cpp
[ 0%] Built target git_version_check
[ 0%] Hipifying src/transport/shm.cc -> /home/skarlage/local/rccl/build/hipify/src/transport/shm.cc
[ 0%] Hipifying src/bootstrap.cc -> /home/skarlage/local/rccl/build/hipify/src/bootstrap.cc
[ 0%] Hipifying src/channel.cc -> /home/skarlage/local/rccl/build/hipify/src/channel.cc
[ 1%] Hipifying src/device/all_reduce.h -> /home/skarlage/local/rccl/build/hipify/src/device/all_reduce.h
[ 1%] Hipifying src/device/broadcast.h -> /home/skarlage/local/rccl/build/hipify/src/device/broadcast.h
[ 1%] Hipifying src/device/all_gather.h -> /home/skarlage/local/rccl/build/hipify/src/device/all_gather.h
[ 1%] Hipifying src/device/common.cu -> /home/skarlage/local/rccl/build/hipify/src/device/common.cu.cpp
[ 1%] Hipifying src/debug.cc -> /home/skarlage/local/rccl/build/hipify/src/debug.cc
[ 1%] Hipifying src/device/alltoall_pivot.h -> /home/skarlage/local/rccl/build/hipify/src/device/alltoall_pivot.h
[ 1%] Hipifying src/device/network/unpack/unpack.h -> /home/skarlage/local/rccl/build/hipify/src/device/network/unpack/unpack.h
[ 4%] Hipifying src/collectives.cc -> /home/skarlage/local/rccl/build/hipify/src/collectives.cc
[ 4%] Hipifying src/device/msccl_kernel_impl.h -> /home/skarlage/local/rccl/build/hipify/src/device/msccl_kernel_impl.h
[ 4%] Hipifying src/device/network/unpack/unpack_defs.h -> /home/skarlage/local/rccl/build/hipify/src/device/network/unpack/unpack_defs.h
[ 4%] Hipifying src/device/op128.h -> /home/skarlage/local/rccl/build/hipify/src/device/op128.h
[ 4%] Hipifying src/device/onerank.cu -> /home/skarlage/local/rccl/build/hipify/src/device/onerank.cu.cpp
[ 4%] Hipifying src/device/common.h -> /home/skarlage/local/rccl/build/hipify/src/device/common.h
[ 6%] Hipifying src/device/prims_ll.h -> /home/skarlage/local/rccl/build/hipify/src/device/prims_ll.h
[ 6%] Hipifying src/device/primitives.h -> /home/skarlage/local/rccl/build/hipify/src/device/primitives.h
[ 6%] Hipifying src/device/prims_ll128.h -> /home/skarlage/local/rccl/build/hipify/src/device/prims_ll128.h
[ 6%] Hipifying src/device/reduce.h -> /home/skarlage/local/rccl/build/hipify/src/device/reduce.h
[ 7%] Hipifying src/device/common_kernel.h -> /home/skarlage/local/rccl/build/hipify/src/device/common_kernel.h
[ 7%] Hipifying src/device/reduce_scatter.h -> /home/skarlage/local/rccl/build/hipify/src/device/reduce_scatter.h
[ 7%] Hipifying src/device/sendrecv.h -> /home/skarlage/local/rccl/build/hipify/src/device/sendrecv.h
[ 7%] Hipifying src/device/prims_simple.h -> /home/skarlage/local/rccl/build/hipify/src/device/prims_simple.h
[ 7%] Hipifying src/enqueue.cc -> /home/skarlage/local/rccl/build/hipify/src/enqueue.cc
[ 7%] Hipifying src/device/reduce_kernel.h -> /home/skarlage/local/rccl/build/hipify/src/device/reduce_kernel.h
[ 7%] Hipifying src/graph/connect.cc -> /home/skarlage/local/rccl/build/hipify/src/graph/connect.cc
[ 7%] Hipifying src/graph/rings.h -> /home/skarlage/local/rccl/build/hipify/src/graph/rings.h
[ 8%] Hipifying src/graph/rings.cc -> /home/skarlage/local/rccl/build/hipify/src/graph/rings.cc
[ 8%] Hipifying src/graph/rome_models.cc -> /home/skarlage/local/rccl/build/hipify/src/graph/rome_models.cc
[ 8%] Hipifying src/graph/rome_models.h -> /home/skarlage/local/rccl/build/hipify/src/graph/rome_models.h
[ 8%] Hipifying src/graph/paths.cc -> /home/skarlage/local/rccl/build/hipify/src/graph/paths.cc
[ 9%] Hipifying src/graph/search.cc -> /home/skarlage/local/rccl/build/hipify/src/graph/search.cc
[ 9%] Hipifying src/graph/topo.cc -> /home/skarlage/local/rccl/build/hipify/src/graph/topo.cc
...
[100%] Linking CXX static library librccl.a
Elapsed time: 270 s. (time), 0.00046 s. (clock)
Elapsed time: 0 s. (time), 0.000342 s. (clock)
[100%] Built target rccl
```
Static rccl exists:
```
$ file librccl.a
librccl.a: current ar archive
```
* Fix up tests Cmake for static builds
We also need to fix up the tests CMakeLists.txt to:
* Remove the unused `BUILD_STATIC` option
* Use `SHARED_LIBS` as a definition of whether we're building static or
not.
[ROCm/rccl commit: bdf9544c81]