2007-08-21

Problem: When running mpibear on nova, I kept getting the following message:

forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image              PC                Routine            Line        Source             
libpthread.so.0    000000318360C420  Unknown               Unknown  Unknown
mpibear            00000000006C2397  Unknown               Unknown  Unknown

Cause: The NodeInfoGlobal file has a 32-bit and a 64-bit option for the INT_PTR_KIND constant. If the wrong option is enabled (in this case, the 32-bit option was enabled when I ran it on the 64-bit nova cluster), then a segmentation fault occurs.

Solution: Uncomment the appropriate option and comment the other one out. Future versions will probably have the 64-bit option enabled by default.