CS4414 Issues in Scientific Computing

Starting a session on the Paragon

To login to the paragon, use telnet or rlogin with one of these hosts:


sioux.cc.vt.edu
omaha.cc.vt.edu
pawnee.cc.vt.edu
ponca.cc.vt.edu

for example



% rlogin ponca.cc.vt.edu

Note: If the original session is running on a work station an xhost command from that session may be necessary in order for graphical applications to access the local display. ex:

% xhost +ponca.cc.vt.edu

Setting environment variables

DISPLAY -- needs to be set to the address of the machine with the original session. With Bourne, Korn or POSIX shells use:

% DISPLAY=your.machine.address:0 % export DISPLAY
If using C or tc shell use setenv instead
% setenv DISPLAY your.machine.address:0
PATH -- these paths may need to be added to your PATH environment variable:

/usr/bin /usr/pgi/pgon/bin /usr/local/bin /usr/local/mpi/bin /usr/bin/X11

For Bourne, Korn or POSIX shell users this can be accomplished in the .profile file:
```
PATH= your_other_paths:/usr/bin:/usr/pgi/pgon/bin:\
/usr/local/bin:/usr/local/mpi/bin:/usr/bin/X11
```
For C and tc shell users the .login file can be modified like the example below:
```
set PATH=(your_other_paths /usr/bin /usr/pgi/pgon/bin \
/usr/local/bin /usr/local/mpi/bin:/usr/bin/X11 )
```
MANPATH -- these paths may need to be added to your MANPATH environment variable, so that the man pages for MPI, pghpf, etc. will come up with the man command:

/usr/pgi/man/man /usr/local/mpi/man

Bourne, Korn or POSIX shells:
```
MANPATH=your_other_paths:/usr/pgi/man/man:/usr/local/mpi/man 
```
C and tc shells:
```
setenv MANPATH your_other_paths:/usr/pgi/man:/usr/local/mpi/man 
```

Useful Commands

Text Editors
- emacs
- vi
Compilers pghpf - Portland Group HPF compiler cc - native C comppiler f77 - native FORTRAN 77 compiler
Debuggers, Profilers ... ipd - Parallel Debugger xipd - Graphical User Interface Parallel Debugger prof, gprof - Profilers xprof, xgprof - Graphical User Interface Profilers paraide - Graphical User Interface to xprof, xgprof, xipd, etc. paragraph - Trace file visualization





[CS 4414] 
[Top]