Dear every one,<br>
<br>
I had one post in March, which is on the following link:<br>
<a href="http://www.lam-mpi.org/MailArchives/lam/2006/03/12120.php">http://www.lam-mpi.org/MailArchives/lam/2006/03/12120.php</a><br>
<br>
It was about compiling code which mixs c++ and fortran. Brian solved my
problem, he told me to add -llammpi++ in the compile command and the
compiling was successful. But now when I compile the same code in
another cluster, the compiling failed and I got similar error message
as that (not using library lammpi++) of in former cluster. But now I
linked the library lammpi++ when compiled in new cluaster.<br>
<br>
The difference between the LAM/MPI in two clusters are:<br>
(1) in the former cluster (compiling successful), the&nbsp;
LAM/MPI&nbsp; header file is in the directory /usr/lib/lam/include, so
I use the following command<br>
g++ -c gibbsreg.cpp -I/usr/lib/lam/include <br>
mpif77 -llammpi++ -lstdc++ gibbsreg.o -lblas -llapack -lg2c -lm<br>
<br>
When I use &quot;locate lammpi++&quot;, I got <br>
/usr/lib/lam/lib/liblammpi++.a<br>
/usr/lib/lam/lib/liblammpi++.so<br>
<br>
<br>
(2)in the new cluster, the LAM/MPI&nbsp; header file is in the directory /usr/include, so I use the following command<br>
g++ -c gibbsreg.cpp -I/usr/include<br>
mpif77 -llammpi++ -lstdc++ gibbsreg.o -lblas -llapack -lg2c -lm<br>
<br>
When I use &quot;locate lammpi++&quot;, I got <br>
/usr/lib64/liblammpi++.a<br>

/usr/lib64/liblammpi++.la<br>
<br>
<br>
When use above compile command, in new cluster, I got the following error message:<br>
gibbsreg.o(.gnu.linkonce.r._ZTVN3MPI2OpE+0x20): undefined reference to
`MPI::Op ::Init(void (*)(void const*, void*, int, MPI::Datatype
const&amp;), bool)'<br>
gibbsreg.o(.gnu.linkonce.r._ZTVN3MPI2OpE+0x28): undefined reference to `MPI::Op ::Free()'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI8CartcommC1ERKP5_comm+0x2a): In function `PM PI::Cartcomm::Cartcomm(_comm* const&amp;)':<br>
: undefined reference to `MPI::Is_initialized()'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI9GraphcommC1ERKP5_comm+0x2a): In function `P MPI::Graphcomm::Graphcomm(_comm* const&amp;)':<br>
: undefined reference to `MPI::Is_initialized()'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI9IntracommC1ERKP5_comm+0x2a): In function `P MPI::Intracomm::Intracomm(_comm* const&amp;)':<br>
: undefined reference to `MPI::Is_initialized()'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI9Intracomm4ScanEPKvPviRKNS_8DatatypeERKNS_2
OpE+0x27): In function `PMPI::Intracomm::Scan(void const*, void*, int,
PMPI::Da tatype const&amp;, PMPI::Op const&amp;) const':<br>
: undefined reference to `PMPI::Intracomm::current_op'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI9Intracomm4ScanEPKvPviRKNS_8DatatypeERKNS_2
OpE+0x64): In function `PMPI::Intracomm::Scan(void const*, void*, int,
PMPI::Da tatype const&amp;, PMPI::Op const&amp;) const':<br>
: undefined reference to `PMPI::Intracomm::current_op'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI9Intracomm14Reduce_scatterEPKvPvPiRKNS_8Dat
atypeERKNS_2OpE+0x28): In function
`PMPI::Intracomm::Reduce_scatter(void const* , void*, int*,
PMPI::Datatype const&amp;, PMPI::Op const&amp;) const':<br>
: undefined reference to `PMPI::Intracomm::current_op'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI9Intracomm14Reduce_scatterEPKvPvPiRKNS_8Dat
atypeERKNS_2OpE+0x66): In function
`PMPI::Intracomm::Reduce_scatter(void const* , void*, int*,
PMPI::Datatype const&amp;, PMPI::Op const&amp;) const':<br>
: undefined reference to `PMPI::Intracomm::current_op'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI9Intracomm9AllreduceEPKvPviRKNS_8DatatypeER
KNS_2OpE+0x27): In function `PMPI::Intracomm::Allreduce(void const*,
void*, int , PMPI::Datatype const&amp;, PMPI::Op const&amp;) const':<br>
: undefined reference to `PMPI::Intracomm::current_op'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI9Intracomm9AllreduceEPKvPviRKNS_8DatatypeER
KNS_2OpE+0x64): more undefined references to
`PMPI::Intracomm::current_op' foll ow<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI4Comm8Set_attrEiPKv+0x7c): In function `PMP I::Comm::Set_attr(int, void const*) const':<br>
: undefined reference to `PMPI::Comm::mpi_comm_map'<br>
gibbsreg.o(.gnu.linkonce.t._ZNK4PMPI4Comm8Set_attrEiPKv+0xb7): In function `PMP I::Comm::Set_attr(int, void const*) const':<br>
: undefined reference to `PMPI::Comm::mpi_comm_map'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI4Comm14Set_errhandlerERKNS_10ErrhandlerE+0x2
8): In function `PMPI::Comm::Set_errhandler(PMPI::Errhandler
const&amp;)':<br>
: undefined reference to `PMPI::Comm::mpi_err_map'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI4Comm4FreeEv+0x2d): In function `PMPI::Comm: :Free()':<br>
: undefined reference to `PMPI::Comm::mpi_comm_map'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI4Comm4FreeEv+0x41): In function `PMPI::Comm: :Free()':<br>
: undefined reference to `PMPI::Comm::mpi_comm_map'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI4Comm4FreeEv+0x57): In function `PMPI::Comm: :Free()':<br>
: undefined reference to `PMPI::Comm::mpi_comm_map'<br>
gibbsreg.o(.gnu.linkonce.t._ZN4PMPI2Op4InitEPFvPKvPviRKNS_8DatatypeEEb+0x20):
I n function `PMPI::Op::Init(void (*)(void const*, void*, int,
PMPI::Datatype con st&amp;), bool)':<br>
: undefined reference to `op_intercept'<br>
collect2: ld returned 1 exit status<br>
mpif77: No such file or directory<br>
<br>
Any ideas about how to solve this problem? Many thanks!<br>
<br>
Best regards,<br>
Guiyuan<br>