The C compiler on Phoenix is Cray C. It supports the C99 ANSI standard.
cc ...
The C++ compiler on Phoenix is Cray C++. It supports ANSI C++.
CC ...
MPI include files and libraries are available by default. No
additional options are required to compile or link MPI codes.
The following options control the amount of debugging information
generated by the compiler. They can adversely affect optimization.
-g |
Full debugging. Turns off optimization. |
-Gp |
Block-level debugging. Limits optimization. |
-Gf |
Function-level debugging. Allows full optimization. |
For most cases,
the default levels of optimization are appropriate. Here are a few exceptions.
-h list=m |
Generate a "loopmark" listing. The listing appears in a file with
the suffix ".lst". Loopmarks illustrate where
optimization did and did not occur, and why. |
-h gen_private_callee |
Generate the code necessary to call each procedure from within a
stream. With this option, the procedures may be called as usual or
from within a multi-streamed region. |
-h upc |
Compile Unified Parallel C (UPC). |
On many systems, you must specify compiler options to create an
executable that provides profiling data. On the Cray X1, you instead
instrument an existing executabl using the "pat_build" tool.
pat_build old_executable instrumented_executable
You then run the instrumented executable, which produces a
".xf" file. Use "pat_report" to generate a profile.
pat_report file.xf
See "man pat_build" and "man pat_report" for more
information on the types of profiles you can produce.
