Merged with master

CMakeLists.txt

@@ -11,7 +11,7 @@ project(astaroth C CXX CUDA)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
 
 ## Project-wide compilation flags
-set(COMMON_FLAGS "-mavx -Wall -Wextra -Werror -Wdouble-promotion -Wfloat-conversion -Wshadow")
+set(COMMON_FLAGS "-mavx -DOMPI_SKIP_MPICXX -Wall -Wextra -Werror -Wdouble-promotion -Wfloat-conversion -Wshadow") # -DOMPI_SKIP_MPICXX is to force OpenMPI to use the C interface
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_FLAGS}")
 set(CMAKE_C_STANDARD 11)
@@ -78,8 +78,8 @@ if (DOUBLE_PRECISION)
     add_definitions(-DAC_DOUBLE_PRECISION=1)
 endif ()
 if (MPI_ENABLED)
-    find_package(MPI REQUIRED)
-    include_directories(${MPI_CXX_INCLUDE_DIRS})
+    find_package(MPI REQUIRED COMPONENTS C)
+    include_directories(${MPI_C_INCLUDE_DIRS})
     add_definitions(-DAC_MPI_ENABLED=1)
 endif ()
 if (MULTIGPU_ENABLED)

bitbucket-pipelines.yml

@@ -3,7 +3,7 @@
 # Only use spaces to indent your .yml configuration.
 # -----
 # You can specify a custom docker image from Docker Hub as your build environment.
-image: nvidia/cuda
+image: nvidia/cuda:11.0-devel-ubuntu20.04
 
 # JP notes:
 # 1) We need a sufficiently recent GPU to run the code (needs to support CUDA 10 + NVIDIA drivers 418)
@@ -20,11 +20,13 @@ pipelines:
     scheduled:
     - step:
         script: # Modify the commands below to build your repository.
+          - export DEBIAN_FRONTEND=noninteractive
+          - ln -fs /usr/share/zoneinfo/Europe/Helsinki /etc/localtime
           - mkdir -p build && cd build
           - apt-get update
           - apt-get install -y apt-transport-https ca-certificates gnupg software-properties-common wget
           - wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | gpg --dearmor - | tee /etc/apt/trusted.gpg.d/kitware.gpg >/dev/null
-          - apt-add-repository 'deb https://apt.kitware.com/ubuntu/ bionic main'
+          - apt-add-repository 'deb https://apt.kitware.com/ubuntu/ focal main'
           - apt-get update
           - apt-get install -y cmake flex bison openmpi-bin libopenmpi-dev gfortran
           - cmake -DDSL_MODULE_DIR="acc/mhd_solver" -DBUILD_STANDALONE=ON -DBUILD_UTILS=ON -DBUILD_RT_VISUALIZATION=OFF -DBUILD_SAMPLES=ON -DDOUBLE_PRECISION=OFF -DMULTIGPU_ENABLED=ON -DMPI_ENABLED=OFF .. # Single precision

samples/bwtest/CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.17) # Required for moder CUDA::cudart linking
 
-find_package(MPI)
+find_package(MPI COMPONENTS C)
 find_package(OpenMP)
 find_package(CUDAToolkit)
 

src/core/CMakeLists.txt

@@ -6,5 +6,5 @@ target_link_libraries(astaroth_core astaroth_kernels CUDA::cudart CUDA::cuda_dri
 
 ## Options
 if (MPI_ENABLED)
-    target_link_libraries(astaroth_core MPI::MPI_CXX)
+    target_link_libraries(astaroth_core MPI::MPI_C)
 endif()