test Intel MPI on linux (#279)

Add to Travis matrix

Author: simonbyrne

.travis.yml

@@ -27,15 +27,26 @@ cache:
 env:
   - MPI_IMPL=mpich
   - MPI_IMPL=openmpi
+  - MPI_IMPL=intelmpi
 
 matrix:
   allow_failures: # issue 262
   - os: osx
     env: MPI_IMPL=openmpi
+  exclude:
+  - os: osx
+    env: MPI_IMPL=intelmpi
 
 before_install:
   - sh ./conf/travis-install-mpi.sh $MPI_IMPL
-  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then export JULIA_MPI_PATH=$HOME/$MPI_IMPL; fi
+  - |
+    if [ "$TRAVIS_OS_NAME" == "linux" ]; then
+      if [ "$MPI_IMPL" == "intelmpi" ]; then
+        source $HOME/intel/compilers_and_libraries/linux/mpi/intel64/bin/mpivars.sh release
+      else
+        export JULIA_MPI_PATH=$HOME/$MPI_IMPL;
+      fi
+    fi
 # Work around OpenMPI attempting to create overly long temporary
 # file names - and erroring as a result
   - export TMPDIR=/tmp

conf/travis-install-mpi.sh

@@ -9,7 +9,7 @@ MPI_IMPL="$1"
 os=`uname`
 OMPIVER=openmpi-3.0.0
 MPICHVER=mpich-3.2.1
-
+IMPIVER=2019.4.243
 case "$os" in
     Darwin)
         brew update
@@ -59,6 +59,22 @@ case "$os" in
                 make -j > /dev/null
                 sudo make install > /dev/null
                 ;;
+            intelmpi)
+                wget http://registrationcenter-download.intel.com/akdlm/irc_nas/tec/15553/l_mpi_$IMPIVER.tgz
+                tar -xzf l_mpi_$IMPIVER.tgz
+                cd l_mpi_$IMPIVER
+                cat << EOF > intel.conf
+ACCEPT_EULA=accept
+CONTINUE_WITH_OPTIONAL_ERROR=yes
+PSET_INSTALL_DIR=${HOME}/intel
+CONTINUE_WITH_INSTALLDIR_OVERWRITE=no
+PSET_MODE=install
+ARCH_SELECTED=ALL
+COMPONENTS=;intel-conda-index-tool__x86_64;intel-comp-l-all-vars__noarch;intel-comp-nomcu-vars__noarch;intel-imb__x86_64;intel-mpi-rt__x86_64;intel-mpi-sdk__x86_64;intel-mpi-doc__x86_64;intel-mpi-samples__x86_64;intel-mpi-installer-license__x86_64;intel-conda-impi_rt-linux-64-shadow-package__x86_64;intel-conda-impi-devel-linux-64-shadow-package__x86_64;intel-mpi-psxe__x86_64;intel-psxe-common__noarch;intel-psxe-common-doc__noarch;intel-compxe-pset
+EOF
+                ./install.sh --silent intel.conf
+                ;;
+
             *)
                 echo "Unknown MPI implementation: $MPI_IMPL"
                 exit 1

deps/build.jl

@@ -39,9 +39,10 @@ const libmpi = find_library(Sys.iswindows() ? "msmpi.dll" : "libmpi",
                             MPI_LIBRARY_PATH !== nothing ? [MPI_LIBRARY_PATH] : [])
 
 libptr = dlopen_e(libmpi)
-if libptr == C_NULL
+if libmpi == "" || libptr == C_NULL
     error("No MPI library found")
 end
+@info "Using MPI library $libmpi"
 
 libpath = dlpath(libptr)
 libsize = filesize(libpath)