Re: [CMake] How to compile MPI code
I'll check my system, maybe cmake "can't find" MPI properly. I'm using cmake 2.8.4. and my code works when I compile without cmake (I use those instructions exactly). Thank you --- El jue, 23/6/11, Todd Gamblin escribió: De: Todd Gamblin Asunto: Re: [CMake] How to compile MPI code Para: "Mª Dolores Villalobos Ortiz" CC: "cmake@cmake.org" Fecha: jueves, 23 de junio, 2011 05:13 On Jun 22, 2011, at 11:11 AM, Mª Dolores Villalobos Ortiz wrote: > Thank you. > > I have tried to compile my code using that version of CMakeLists, but it > doesn't work. My program's output is still wrong. Whether or not mpiexec launches properly isn't something CMake can control. If you are getting rank 0 for all your processes when you launch mpiexec, this is more than likely a problem with your system. Just out of curiosity, what version of MPI are you using? And does the code work when you compile it *without* CMake? e.g. if you just run: mpicxx -o hello hello.cpp mpiexec -n 2 ./hello Does that work, or does that do the same thing? -Todd ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] How to compile MPI code
On Jun 22, 2011, at 11:11 AM, Mª Dolores Villalobos Ortiz wrote:
> Thank you.
>
> I have tried to compile my code using that version of CMakeLists, but it
> doesn't work. My program's output is still wrong.
Whether or not mpiexec launches properly isn't something CMake can control. If
you are getting rank 0 for all your processes when you launch mpiexec, this is
more than likely a problem with your system.
Just out of curiosity, what version of MPI are you using? And does the code
work when you compile it *without* CMake? e.g. if you just run:
mpicxx -o hello hello.cpp
mpiexec -n 2 ./hello
Does that work, or does that do the same thing?
-Todd
> This is completely, utterly wrong!
>
>
> # 2.7 was a development version, so you should either specify
> # 2.6 or 2.8...
> cmake_minim_required(VERSION 2.7)
> project(ITK_MPI)
>
> find_package(MPI REQUIRED)
>
> include_directories(${MPI_INCLUDE_PATH})
>
> add_executable(hello hello.cpp)
> target_link_libraries(hello ${MPI_LIBRARIES})
>
> if(MPI_COMPILE_FLAGS)
> set_target_properties(hello PROPERTIES
> COMPILE_FLAGS "${MPI_COMPILE_FLAGS}")
> endif()
>
> if(MPI_LINK_FLAGS)
> set_target_properties(hello PROPERTIES
> LINK_FLAGS "${MPI_LINK_FLAGS}")
> endif()
>
>
> You should *NEVER* set CMAKE__COMPILER, this completely breaks
> things. Also, with CMake you shouldn't use the compiler wrappers (mpicxx
> etc.), because CMake figures out how to compile MPI programs without it.
>
> HTH
>
> Michael
> ___
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__
Todd Gamblin, tgamb...@llnl.gov, http://people.llnl.gov/gamblin2
CASC @ Lawrence Livermore National Laboratory, Livermore, CA, USA
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Re: [CMake] How to compile MPI code
Thank you.
I have tried to compile my code using that version of CMakeLists, but it
doesn't work. My program's output is still wrong.
This is completely, utterly wrong!
# 2.7 was a development version, so you should either specify
# 2.6 or 2.8...
cmake_minim_required(VERSION 2.7)
project(ITK_MPI)
find_package(MPI REQUIRED)
include_directories(${MPI_INCLUDE_PATH})
add_executable(hello hello.cpp)
target_link_libraries(hello ${MPI_LIBRARIES})
if(MPI_COMPILE_FLAGS)
set_target_properties(hello PROPERTIES
COMPILE_FLAGS "${MPI_COMPILE_FLAGS}")
endif()
if(MPI_LINK_FLAGS)
set_target_properties(hello PROPERTIES
LINK_FLAGS "${MPI_LINK_FLAGS}")
endif()
You should *NEVER* set CMAKE__COMPILER, this completely breaks
things. Also, with CMake you shouldn't use the compiler wrappers (mpicxx
etc.), because CMake figures out how to compile MPI programs without it.
HTH
Michael
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Re: [CMake] How to compile MPI code
Hm... this is the CMake user list, not the MPI-user list. You're
posing your question on the wrong list.
(but how did you compile? Did you use mpicc?)
Sincerely,
Jakob
On 06/22/2011 02:25 PM, Mª Dolores Villalobos Ortiz wrote:
>What do you mean with "it doesn't run correctly"? Does it not even
start? How do you start your program?
--
My program's code is:
#include
using namespace std;
#include "mpi.h"
int main( int argc, char * argv[] )
{
int node;
int num_nodes;
int i, buf;
MPI::Init(argc, argv);
node = MPI::COMM_WORLD.Get_rank();
num_nodes = MPI::COMM_WORLD.Get_size();
std::cout << "I am node " << node << std::endl;
if ( node == 0 ) {
std::cout << "I am node " << node << std::endl;
std::cout << "Num threads (Get_size) -> " << num_nodes << std::endl;
}
else
{
std::cout << "I am node " << node << std::endl;
}
MPI_Finalize();
return 0;
}
--
And, in order to run the program, I type in Ubuntu's terminal:
mpiexec -n 2 ./main_program
-
The program write in terminal:
I am node 0
I am node 0
Num threads (Get_size) -> 1
I am node 0
I am node 0
Num threads (Get_size) -> 1
instead of:
I am node 0
I am node 0
Num threads (Get_size) -> 2
I am node 1
I am node 1
Lola
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Re: [CMake] How to compile MPI code
On 06/22/2011 12:00 PM, Mª Dolores Villalobos Ortiz wrote:
> Hi
>
> I'm trying to compile a main program (it contains MPI functions) using
> cmake. I get an executable file (there aren't problems in compilation ),
> but it doesn't run correctly.
>
> If I compile my code using a simple Makefile, it works; but I need to
> compile it using cmake (that's a prerequisite for my work).
>
> I have installed MPICH2 and cmake 2.8.4. and I use the next files:
>
> CMakeLists.txt:
>
> cmake_minimum_required(VERSION 2.7)
> set(CMAKE_CXX_COMPILER "/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx")
> set(CMAKE_C_COMPILER "/home/lola/Packages/mpich2-1.3.2p1/bin/mpicc")
> project( ITK_MPI )
> find_package ( MPI )
> if ( MPI_FOUND )
> include_directories( ${MPI_INCLUDE_PATH} )
> endif( MPI_FOUND )
>
This is completely, utterly wrong!
# 2.7 was a development version, so you should either specify
# 2.6 or 2.8...
cmake_minim_required(VERSION 2.7)
project(ITK_MPI)
find_package(MPI REQUIRED)
include_directories(${MPI_INCLUDE_PATH})
add_executable(hello hello.cpp)
target_link_libraries(hello ${MPI_LIBRARIES})
if(MPI_COMPILE_FLAGS)
set_target_properties(hello PROPERTIES
COMPILE_FLAGS "${MPI_COMPILE_FLAGS}")
endif()
if(MPI_LINK_FLAGS)
set_target_properties(hello PROPERTIES
LINK_FLAGS "${MPI_LINK_FLAGS}")
endif()
You should *NEVER* set CMAKE__COMPILER, this completely breaks
things. Also, with CMake you shouldn't use the compiler wrappers (mpicxx
etc.), because CMake figures out how to compile MPI programs without it.
HTH
Michael
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Re: [CMake] How to compile MPI code
>What do you mean with "it doesn't run correctly"? Does it not even
start? How do you start your program?
--
My program's code is:
#include
using namespace std;
#include "mpi.h"
int main( int argc, char * argv[] )
{
int node;
int num_nodes;
int i, buf;
MPI::Init(argc, argv);
node = MPI::COMM_WORLD.Get_rank();
num_nodes = MPI::COMM_WORLD.Get_size();
std::cout << "I am node " << node << std::endl;
if ( node == 0 ) {
std::cout << "I am node " << node << std::endl;
std::cout << "Num threads (Get_size) -> " << num_nodes << std::endl;
}
else
{
std::cout << "I am node " << node << std::endl;
}
MPI_Finalize();
return 0;
}
--
And, in order to run the program, I type in Ubuntu's terminal:
mpiexec -n 2 ./main_program
-
The program write in terminal:
I am node 0
I am node 0
Num threads (Get_size) -> 1
I am node 0
I am node 0
Num threads (Get_size) -> 1
instead of:
I am node 0
I am node 0
Num threads (Get_size) -> 2
I am node 1
I am node 1
Lola
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Re: [CMake] How to compile MPI code
What do you mean with "it doesn't run correctly"? Does it not even
start? How do you start your program?
Andreas
Am 22.06.2011 12:00, schrieb Mª Dolores Villalobos Ortiz:
Hi
I'm trying to compile a main program (it contains MPI functions) using
cmake. I get an executable file (there aren't problems in compilation
), but it doesn't run correctly.
If I compile my code using a simple Makefile, it works; but I need to
compile it using cmake (that's a prerequisite for my work).
I have installed MPICH2 and cmake 2.8.4. and I use the next files:
CMakeLists.txt:
cmake_minimum_required(VERSION 2.7)
set(CMAKE_CXX_COMPILER "/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx")
set(CMAKE_C_COMPILER "/home/lola/Packages/mpich2-1.3.2p1/bin/mpicc")
project( ITK_MPI )
find_package ( MPI )
if ( MPI_FOUND )
include_directories( ${MPI_INCLUDE_PATH} )
endif( MPI_FOUND )
--
CMakeCache.txt:
.
..
//CXX compiler.
CMAKE_CXX_COMPILER:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx
//Flags used by the compiler during all build types.
CMAKE_CXX_FLAGS:STRING=
//Flags used by the compiler during debug builds.
CMAKE_CXX_FLAGS_DEBUG:STRING=
//Flags used by the compiler during release minsize builds.
CMAKE_CXX_FLAGS_MINSIZEREL:STRING=
//Flags used by the compiler during release builds (/MD /Ob1 /Oi
// /Ot /Oy /Gs will produce slightly less optimized but smaller
// files).
CMAKE_CXX_FLAGS_RELEASE:STRING=
//Flags used by the compiler during Release with Debug Info builds.
CMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING=
//C compiler.
CMAKE_C_COMPILER:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpicc
//Value Computed by CMake
ITK_MPI_BINARY_DIR:STATIC=/home/lola/Curso/Proyecto/Pruebas_MPI
//Value Computed by CMake
ITK_MPI_SOURCE_DIR:STATIC=/home/lola/Curso/Proyecto/Pruebas_MPI
//Executable for running MPI programs.
MPIEXEC:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpiexec
//Maximum number of processors available to run MPI applications.
MPIEXEC_MAX_NUMPROCS:STRING=2
//Flag used by MPI to specify the number of processes for MPIEXEC;
// the next option will be the number of processes.
MPIEXEC_NUMPROC_FLAG:STRING=-n2
//These flags will come after all flags given to MPIEXEC.
MPIEXEC_POSTFLAGS:STRING=
//These flags will be directly before the executable that is being
// run by MPIEXEC.
MPIEXEC_PREFLAGS:STRING=
//MPI compiler. Used only to detect MPI compilation flags.
MPI_COMPILER:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx
//MPI compilation flags
MPI_COMPILE_FLAGS:STRING=' '
//Extra MPI libraries to link against
MPI_EXTRA_LIBRARY:STRING=/usr/lib/mpich/lib/libmpich.a;/usr/lib/libpthread.so;/usr/lib/librt.so
//MPI include path
MPI_INCLUDE_PATH:STRING=/home/lola/Packages/mpich2-1.3.2p1/include
//MPI library to link against
MPI_LIBRARY:FILEPATH=/usr/lib/mpich/lib/libpmpich++.a;/usr/lib/mpich/lib/libmpich.a;/usr/lib/libpthread.so;/usr/lib/librt.so
//MPI linking flags
MPI_LINK_FLAGS:STRING=
.
¿What's am I doing wrong?, ¿Is there any other configuration?. I really
need to make it work.
Thank you
Lola
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[CMake] How to compile MPI code
Hi
I'm trying to compile a main program (it contains MPI functions) using cmake. I
get an executable file (there aren't problems in compilation ), but it doesn't
run correctly.
If I compile my code using a simple Makefile, it works; but I need to compile
it using cmake (that's a prerequisite for my work).
I have installed MPICH2 and cmake 2.8.4. and I use the next files:
CMakeLists.txt:
cmake_minimum_required(VERSION 2.7)
set(CMAKE_CXX_COMPILER "/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx")
set(CMAKE_C_COMPILER "/home/lola/Packages/mpich2-1.3.2p1/bin/mpicc")
project( ITK_MPI )
find_package ( MPI )
if ( MPI_FOUND )
include_directories( ${MPI_INCLUDE_PATH} )
endif( MPI_FOUND )
--
CMakeCache.txt:
.
..
//CXX compiler.
CMAKE_CXX_COMPILER:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx
//Flags used by the compiler during all build types.
CMAKE_CXX_FLAGS:STRING=
//Flags used by the compiler during debug builds.
CMAKE_CXX_FLAGS_DEBUG:STRING=
//Flags used by the compiler during release minsize builds.
CMAKE_CXX_FLAGS_MINSIZEREL:STRING=
//Flags used by the compiler during release builds (/MD /Ob1 /Oi
// /Ot /Oy /Gs will produce slightly less optimized but smaller
// files).
CMAKE_CXX_FLAGS_RELEASE:STRING=
//Flags used by the compiler during Release with Debug Info builds.
CMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING=
//C compiler.
CMAKE_C_COMPILER:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpicc
//Value Computed by CMake
ITK_MPI_BINARY_DIR:STATIC=/home/lola/Curso/Proyecto/Pruebas_MPI
//Value Computed by CMake
ITK_MPI_SOURCE_DIR:STATIC=/home/lola/Curso/Proyecto/Pruebas_MPI
//Executable for running MPI programs.
MPIEXEC:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpiexec
//Maximum number of processors available to run MPI applications.
MPIEXEC_MAX_NUMPROCS:STRING=2
//Flag used by MPI to specify the number of processes for MPIEXEC;
// the next option will be the number of processes.
MPIEXEC_NUMPROC_FLAG:STRING=-n2
//These flags will come after all flags given to MPIEXEC.
MPIEXEC_POSTFLAGS:STRING=
//These flags will be directly before the executable that is being
// run by MPIEXEC.
MPIEXEC_PREFLAGS:STRING=
//MPI compiler. Used only to detect MPI compilation flags.
MPI_COMPILER:FILEPATH=/home/lola/Packages/mpich2-1.3.2p1/bin/mpicxx
//MPI compilation flags
MPI_COMPILE_FLAGS:STRING=' '
//Extra MPI libraries to link against
MPI_EXTRA_LIBRARY:STRING=/usr/lib/mpich/lib/libmpich.a;/usr/lib/libpthread.so;/usr/lib/librt.so
//MPI include path
MPI_INCLUDE_PATH:STRING=/home/lola/Packages/mpich2-1.3.2p1/include
//MPI library to link against
MPI_LIBRARY:FILEPATH=/usr/lib/mpich/lib/libpmpich++.a;/usr/lib/mpich/lib/libmpich.a;/usr/lib/libpthread.so;/usr/lib/librt.so
//MPI linking flags
MPI_LINK_FLAGS:STRING=
.
¿What's am I doing wrong?, ¿Is there any other configuration?. I really need to
make it work.
Thank you
Lola
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