Hi Tim,Thanks for your reply. I do not understand your last statement \"you can\'t use ifort until you have built a copy of lam with ifort.\"For installation first i install Intel fortran compiler than i set environment variable FC=ifc and than i install lam-7.2.1 on my machine. Is it ok?I used mpif77 for compilation but it gives me following error at mpirun time.$mpirun -np 2 a.outforrtl: Illegal seekforrtl: Illegal seekforrtl: severe (20): REWIND error, unit 5, file /dev/pts/1Image PC Routine Line Sourcea.out 0000000000548E3F Unknown Unknown Unknowna.out 
; 0000000000547322 Unknown Unknown Unknowna.out 000000000051E59A Unknown Unknown Unknowna.out 00000000004F4E64 Unknown Unknown Unknowna.out 00000000004F4AB4 Unknown Unknown Unknowna.out 0000000000504EC6 Unknown &nb
s
p; Unknown Unknowna.out 00000000004083C9 Unknown Unknown Unknowna.out 00000000004055E2 Unknown Unknown Unknowna.out 0000000000405276 Unknown Unknown Unknownlibc.so.6 0000002A95C481AE Unknown Unknown Unknowna.out 0000000000405
1AA Unknown Unknown Unknownforrtl: severe (20): REWIND error, unit 5, file /dev/pts/1Image PC Routine Line Sourcea.out 0000000000548E3F Unknown Unknown Unknowna.out 0000000000547322 Unknown Unknown Unknowna.out 000000000051E5
9
A Unknown Unknown Unknowna.out 00000000004F4E64 Unknown Unknown Unknowna.out 00000000004F4AB4 Unknown Unknown Unknowna.out 0000000000504EC6 Unknown Unknown Unknowna.out 00000000004083C9 Unknown Unknown Unknowna.out  
; 00000000004055E2 Unknown Unknown Unknowna.out 0000000000405276 Unknown Unknown Unknownlibc.so.6 0000002A95C481AE Unknown Unknown Unknowna.out 00000000004051AA Unknown Unknown Unknown-----------------------------------------------------------------------------One of the processes started by mpirun has exited with a nonzero exitcode. This typically indicates th
a
t the process finished in error.If your process did not finish in error, be sure to include a \"return0\" or \"exit(0)\" in your C code before exiting the application.PID 16713 failed on node n0 (10.10.0.201) with exit status 20.----------------------------------------------------------------------------, General LAM/MPI mailing list wrote Tim Prins wrote: > Hi, > > It looks like you are not linking in the mpi library. You should compile your > program with mpif77 instead of calling ifort directly. This will > automatically add any necessary compile flags. See: > http://www.lam-mpi.org/faq/category5.php3#question1 > Don\'t forget that you can\'t use ifort until you have built a copy of lam with ifort. _______________________________________________ This list is archived at http://www.lam-mpi.org/MailArchives/lam/
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