[MPICH2-dev] possible bug in mpich2

[Kamaraju Kusumanchi]

A sample test code (test.f90) is attached in this mail.

I think this is a valid fortran 90 code. The program compiles fine.
But I am unable to execute it. I dont know whether it is a gfortran
bug or mpich2 bug. Sorry if this is the wrong forum. Please direct me
as to where I should report this problem.

To reproduce the problem

$make
mpif90   -c test.f90 -o test.o

mpif90  test.o    -o test

$mpiexec -l -n 4 ./test
rank 0 in job 5  kusumanchi_56156   caused collective abort of all ranks
  exit status of rank 0: killed by signal 11


I am using Debian unstable.


$gfortran -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--program-suffix=-4.0 --enable-__cxa_atexit --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-awt=gtk-default
--enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre
--enable-mpfr --disable-werror --with-tune=i686
--enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)


$mpif90 -v
mpif90 for 1.0.3
Driving: gfortran -g -O2 -v
-I/home/software/compiledLibs/mpich2_1.0.3_gcc_4.0.3_gfortran_4.0.3/include
-I/home/software/compiledLibs/mpich2_1.0.3_gcc_4.0.3_gfortran_4.0.3/include
-L/home/software/compiledLibs/mpich2_1.0.3_gcc_4.0.3_gfortran_4.0.3/lib
-lmpichf90 -lmpichf90 -lmpich -lpthread -lrt -lgfortranbegin
-lgfortran -lm -shared-libgcc
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--program-suffix=-4.0 --enable-__cxa_atexit --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-awt=gtk-default
--enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre
--enable-mpfr --disable-werror --with-tune=i686
--enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
 /usr/lib/gcc/i486-linux-gnu/4.0.4/collect2 --eh-frame-hdr -m elf_i386
-dynamic-linker /lib/ld-linux.so.2
/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../lib/crt1.o
/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../lib/crti.o
/usr/lib/gcc/i486-linux-gnu/4.0.4/crtbegin.o
-L/home/software/compiledLibs/mpich2_1.0.3_gcc_4.0.3_gfortran_4.0.3/lib
-L/usr/lib/gcc/i486-linux-gnu/4.0.4
-L/usr/lib/gcc/i486-linux-gnu/4.0.4
-L/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../lib
-L/usr/lib/gcc/i486-linux-gnu/4.0.4/../../.. -L/lib/../lib
-L/usr/lib/../lib -lmpichf90 -lmpichf90 -lmpich -lpthread -lrt
-lgfortranbegin -lgfortran -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/i486-linux-gnu/4.0.4/crtend.o
/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../lib/crtn.o
/usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../lib/libgfortranbegin.a(fmain.o):
In function `main': undefined reference to `MAIN__'
collect2: ld returned 1 exit status

While compiling mpich2, I used gcc 4.0.3, gfortran 4.0.3. Currently my
machine is running 4.0.4 . Dont know if the version difference
matters. But I wanted to inform you in case it does matter.

thanks
raju
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