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conda create -n gcc_8_5 gxx_linux-64=8.5.0 gcc_linux-64=8.5.0 sysroot_linux-64=2.17 python=3.8 openmpi

安装后输出：

For Linux 64, Open MPI is built with CUDA awareness but this support is disabled by default.

To enable it, please set the environment variable OMPI_MCA_opal_cuda_support=true before

launching your MPI processes. Equivalently, you can set the MCA parameter in the command line:

mpiexec --mca opal_cuda_support 1 ...

In addition, the UCX support is also built but disabled by default.

To enable it, first install UCX (conda install -c conda-forge ucx). Then, set the environment

variables OMPI_MCA_pml="ucx" OMPI_MCA_osc="ucx" before launching your MPI processes.

Equivalently, you can set the MCA parameters in the command line:

mpiexec --mca pml ucx --mca osc ucx ...

Note that you might also need to set UCX_MEMTYPE_CACHE=n for CUDA awareness via UCX.

Please consult UCX's documentation for detail.

conda activate gcc_8_5

./bootstrap --prefix=/home/dddc/zzy/software/cmake

-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR)

CMake Error at Utilities/cmcurl/CMakeLists.txt:644 (message):

Could not find OpenSSL. Install an OpenSSL development package or

configure CMake with -DCMAKE_USE_OPENSSL=OFF to build without OpenSSL.