MPICH Friends, A fresh version of mpich-3.0.1 fails to compile due to LLONG_MAX being undeclared in status_set_elements_x.c. (I see in the mpich-devel mailing list this was identified about a month ago, too.) My information: bodony@acoustics-0:~/mpich2-1.4.1p1$ uname -a Linux acoustics-0 2.6.28-19-generic #61-Ubuntu SMP Wed May 26 23:35:15 UTC 2010 i686 GNU/Linux bodony@acoustics-0:~/mpich2-1.4.1p1$ icc -V Intel(R) C Compiler XE for applications running on IA-32, Version 13.0.1.117 Build 20121010 mpich-3.0.1 configure line: ./configure --enable-fc --enable-cxx --enable-f77 For now I'll back off to mpich2-1.4.1p1. Cheers, Dan -- Daniel J. Bodony Assistant Professor of Aerospace Engineering Affiliate Professor of Mechanical Science & Engineering University of Illinois at Urbana-Champaign