Fftw Mpi Library Mac

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Jun 27, 2018 'configure: error: could not find mpi library for -enable-mpi'. This is because FFTW configuration (using sources in the AMBERHOME tree) could not find the mpi libraries. Maybe someone on the list knows the trick to get fftw's configure script to look in /usr/local, but one of the two solutions listed above is what we recommend. The FFTW MPI library code is all located in the mpi subdirectoy of the FFTW package (along with source code for test programs). On Unix systems, the FFTW MPI libraries and header files can be automatically configured, compiled, and installed along with the uniprocessor FFTW libraries simply by including -enable-mpi in the flags to the configure script (see Section Installation on Unix ). 6 Distributed-memory FFTW with MPI In this chapter we document the parallel FFTW routines for parallel systems supporting the MPI message-passing interface. Unlike the shared-memory threads described in the previous chapter, MPI allows you to use distributed-memory parallelism, where each CPU has its own separate memory, and which can scale up to clusters of many thousands of processors.

The necessary original FFTW (www.fftw.org) header files are used without any modifications. The created MPI FFTW wrapper library and the Intel MKL library are used instead of the FFTW library. Running Examples of MPI FFTW. Wrappers There are some examples that.

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Fftw Mpi Library Mac Download

Comments

commented Oct 6, 2016

Just starting to build mpi flavor of fftw3 for the Fedora fftw package and
noticed that the _mpi.so library is not linked with -lmpi as it should.
MPILIBS ends up being ' since mpicc can link without added flags, and the
library ends up getting linked with CC not MPICC.

On another minor note - all of the _omp/mpi/etc variants get linked with -lm,
but only the main library needs it.

rpmlint warnings for the two issues:

fftw-libs-double.x86_64: W: unused-direct-shlib-dependency
/usr/lib64/libfftw3_threads.so.3.5.5 /lib64/libm.so.6

fftw-mpich-libs-double.x86_64: W: undefined-non-weak-symbol
/usr/lib64/mpich/lib/libfftw3_mpi.so.3.5.5 MPI_Alltoallv

For the purposes of the Fedora package I think I can use CC=mpicc for the mpi
builds, but this doesn't really work for normal builds as then everything is
linked with the mpi libraries.

commented Oct 8, 2016

'As it should' is kind of strong. In the static library case, it has been understood since forever that the final link command line must explicitly include all libraries and all their dependencies. It is unfortunate that in linux shared libraries are expected to behave differently from static libraries.

Research pdf library for mac. MPI programs will be linked with mpicc anyway, which will use -lmpi in the final link command line. So I don't see any real problem to be solved. Do you have a specific fix in mind?