Dear MPICH developers, While experimenting with MPICH 3.0.2 and various compilers, I found an inconsistency which probably isn't intended. When configuring MPICH an a Linux system for GNU or Intel compilers with ./configure --prefix=... --enable-debuginfo \ CC=gcc CXX=g++ F77=gfortran F90=gfortran or ./configure --prefix=... --enable-debuginfo \ CC=icc CXX=icpc F77=ifort F90=ifort respectively, the following libraries are built (ignoring the shared libs here for simplicity): ----- 8< ----- 8< ----- 8< ----- 8< ----- 8< ----- 8< ----- $ cd <prefix_{gnu,intel}>/lib $ ls *.a libfmpich.a libmpichcxx.a libmpl.a libtvmpich.a libmpich.a libmpichf90.a libopa.a ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- However, when configuring for Clang 3.2 (with GNU Fortran) using ./configure --prefix=... --enable-debuginfo \ CC=clang CXX=clang++ F77=gfortran F90=gfortran results in ----- 8< ----- 8< ----- 8< ----- 8< ----- 8< ----- 8< ----- $ cd <prefix_clang>/lib $ ls *.a libfmpich.a libmpichcxx.a libmpl.a libpmpich.a libmpich.a libmpichf90.a libopa.a libtvmpich.a ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- Obviously, there is an additional library 'libpmpich.a'. Further investigation reveals that the distribution of symbols across these libraries is somewhat weird, too: ----- 8< ----- 8< ----- 8< ----- 8< ----- 8< ----- 8< ----- $ cd <prefix_clang>/lib $ nm libmpich.a | grep 'T PMPI_Recv' 00000000 T PMPI_Recv 00000000 T PMPI_Recv_init $ nm libpmpich.a | grep 'T PMPI_Recv' $ nm libmpich.a | grep 'T MPI_Recv' $ nm libpmpich.a | grep 'T MPI_Recv' 00000000 T MPI_Recv 00000000 T MPI_Recv_init $ $ nm libmpich.a | grep 'T MPI_File_open' 00000000 T MPI_File_open $ nm libpmpich.a | grep 'T MPI_File_open' 00000000 T MPI_File_open $ nm libmpich.a | grep 'T PMPI_File_open' 00000000 T PMPI_File_open $ nm libpmpich.a | grep 'T PMPI_File_open' 00000000 T PMPI_File_open ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- My assumption is that something's going wrong during configure which subsequently messes up the build. Maybe something to investigate for the next bugfix release... Thanks, Markus -- Dr. Markus Geimer Juelich Supercomputing Centre Institute for Advanced Simulation Forschungszentrum Juelich GmbH 52425 Juelich, Germany Phone: +49-2461-61-1773 Fax: +49-2461-61-6656 E-mail: [email protected] WWW: http://www.fz-juelich.de/jsc/ ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------