Help Desk: User QuestionsFrequently asked questions from our users
—Nick Wright
Dear SDSC Consulting,
My program uses more than 2GB of memory and when I try to run it on Datastar I get the following error message:
"1525-108 Error encountered while attempting to allocate a data object. The program will stop."
Help !
Answer:
In order to address more than 2GB of memory you need to compile your program in 64-bit mode. To enable this add '-q64' to
the compiler flags you are using and recompile. This will enable you to address more than 2Gb of memory and will allow
you to run your program.
Dear SDSC Consulting,
Where are the mpi libraries and include files located on your machines ? I am trying to compile my program and need to
know where they are so I can compile my program.
Answer:
You do not need to explicitly link to the MPI libraries on any of our machines; you should be using the mpi-enabled
versions of the compilers, as these will explicitly link to the latest version of the libraries. On the Datastar machine
the mpi-enabled compilers are called mpxlf (Fortran 77) mpxlf90 (Fortran 90)
& mpcc (C). On the bluegene and Teragrid
machines the compilers are called mpif77 (Fortran 77) mpif90 (Fortran 90) and mpicc (C).
Dear SDSC Consulting,
I want to move some of my data from my home directory on datastar/bluegene/teragrid onto the high-performance storage
system (HPSS), can I have an allocation of storage space on HPSS please ?
Answer:
Allocated space on HPSS is automatically included with your SDSC account, there is no need to apply for a separate
allocation. You can access HPSS using the 'hsi' command, which provides an ftp-like interface to HPSS. More details on
using the 'hsi' command are available on the man page or here
Nick Wright is reachable via e-mail at nwright@sdsc.edu
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