openfoam openmpi 错误：找不到 libmpi.so.0

Question

每当我尝试在 openfoam 中编译求解器时，都会收到错误消息：

/usr/bin/ld: warning: libmpi.so.0, needed by /opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libopen-rte.so.0, needed by /opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libopen-pal.so.0, needed by /opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so, not found (try using -rpath or -rpath-link)
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Waitall'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Abort'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `ompi_mpi_double'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Get_count'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Init'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Probe'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Send'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Allreduce'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `ompi_mpi_packed'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Buffer_detach'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Bsend'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `ompi_mpi_byte'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Irecv'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Recv'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `ompi_mpi_comm_world'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Get_processor_name'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Test'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Isend'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Finalize'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `ompi_mpi_op_sum'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Buffer_attach'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Comm_size'
/opt/openfoam211/platforms/linux64GccDPOpt/lib/openmpi-system/libPstream.so: undefined reference to `MPI_Comm_rank'
collect2: error: ld returned 1 exit status

我猜问题出在 open-mpi 的安装上。如何检查/修复错误？

Answer 1

首先，检查您是否确实安装了 Open MPI。

其次，检查 OpenFOAM 是否正确设置为使用 Open MPI：请参阅etc/bashrc（或etc/cshrc）中的相应选项。还要确保你已经为 Open MPI 设置了任何需要的环境变量（我没有任何 Open MPI 经验，我使用 Intel MPI 构建，并且有一些环境变量需要通过手动调用一些脚本来设置）。

第三，检查wmake 发出的链接命令行以构建您的求解器，和 以构建libPstream（在主要的 OpenFOAM 构建过程中）。如果它不打印链接行，编辑wmake/Makefile 使其打印出来。其中一些行（我认为libPstream's）应该包含一些链接选项，并且很可能是与 Open MPI 相关的路径。