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Added some details on the mpi flags for Cray machines

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Guido Cossu 2016-11-26 18:30:53 +00:00
parent d8258f0758
commit 1e44fd3094
2 changed files with 2 additions and 2 deletions
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2
README.md
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@ -138,7 +138,7 @@ The following options can be use with the `--enable-comms=` option to target dif
| `mpi3l[-auto]` | MPI communications using MPI 3 shared memory and leader model |
| `shmem ` | Cray SHMEM communications |
For the MPI interfaces the optional `-auto` suffix instructs the `configure` scripts to determine all the necessary compilation and linking flags. This is done by extracting the informations from the MPI wrapper specified in the environment variable `MPICXX` (if not specified `configure` will scan though a list of default names).
For the MPI interfaces the optional `-auto` suffix instructs the `configure` scripts to determine all the necessary compilation and linking flags. This is done by extracting the informations from the MPI wrapper specified in the environment variable `MPICXX` (if not specified `configure` will scan though a list of default names). The `-auto` suffix is not supported by the Cray environment wrapper scripts. Use the standard versions instead.
### Possible SIMD types

2
configure.ac
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@ -290,7 +290,7 @@ esac
case ${ac_COMMS} in
*-auto)
LX_FIND_MPI
if test "x$have_CXX_mpi" = 'xno'; then AC_MSG_ERROR(["MPI not found"]); fi
if test "x$have_CXX_mpi" = 'xno'; then AC_MSG_ERROR(["The configure could not find the MPI compilation flags. N.B. The -auto mode is not supported by Cray wrappers. Use the non -auto version in this case."]); fi
AM_CXXFLAGS="$MPI_CXXFLAGS $AM_CXXFLAGS"
AM_CFLAGS="$MPI_CFLAGS $AM_CFLAGS"
AM_LDFLAGS="`echo $MPI_CXXLDFLAGS | sed -E 's/-l@<:@^ @:>@+//g'` $AM_LDFLAGS"