Dear all,
I have some problems with the C++ MPI datatype MPI::LONG_LONG. If I try
to compile
#include <mpi.h>
int main(void) {
MPI::Datatype foo=MPI::UNSIGNED_LONG_LONG;
MPI::Datatype bar=MPI::LONG_LONG;
}
The linker returns the error message
bauke_at_newton:~/tmp$ mpiCC -o foo foo.cc
/tmp/ccJ6oepC.o: In function `main':
/tmp/ccJ6oepC.o(.text+0x22): undefined reference to `MPI::LONG_LONG'
collect2: ld returned 1 exit status
This problem seams to be C++ specific. In C neither unsigned nor signed
long long data type cause trouble. The code
#include <mpi.h>
int main(void) {
MPI_Datatype foo=MPI_UNSIGNED_LONG_LONG;
MPI_Datatype bar=MPI_LONG_LONG_INT;
}
complies without errors.
I am using LAM 7.0.2 with gcc-3.0 and g++-3.0 under Debian 3.0.
Cheers,
Heiko
--
-- Eine gute Ehe beruht auf dem Talent zur Freundschaft.
-- (Friedrich Nietzsche, 1844-1900, Menschliches I)
-- Supercomputing in Magdeburg @ http://tina.nat.uni-magdeburg.de
-- Heiko Bauke @ http://www.uni-magdeburg.de/bauke
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