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--- guide:compiling [2013/05/09 17:41]
andyr [OpenMP]
+++ guide:compiling [2021/12/09 16:42] (current)
@@ Line 1: / Line 1: @@
 ======Compiling======
 =====Compilers=====
-The following is a list of C, C++ and Fortran compilers available on the SUN cluster and the M9000:
+The following is a list of C, C++ and Fortran compilers available on the CHPC cluster:
 ====Intel====
   * ''icc'' (for C and C++)
   * ''ifort''
-====GNU====
+====GNU Compiler Collection====
   * ''gcc''
   * ''g++''
   * ''gfortran''
-<del>Sun Studio</del>
-  * ''cc''
-  * ''CC''
-  * ''f90''/''f95''
 =====Environment=====
@@ Line 20: / Line 15: @@
   * Check which modules are available <code>module avail</code>
   * Add a module to the current environment <code>module add <module></code>
-  * Remove a module from the environment <code>module remove <module></code>
+  * Show loaded modules <code>module list</code>
+  * Remove a module from the environment <code>module remove <module></code> or <code>module rm <module></code>
 =====Compiling=====
@@ Line 32: / Line 29: @@
     printf("Hello World");
     return 0;
+}
+</code>
+===C with MPI===
+<code c>
+#include <stdlib.h>
+#include <stdio.h>
+#include <mpi.h>
+int
+main(argc, argv)
+int                     argc;
+char                    *argv[];
+{
+        int             rank, size, len;
+        char            name[MPI_MAX_PROCESSOR_NAME];
+        MPI_Init(&argc, &argv);
+        MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+        MPI_Comm_size(MPI_COMM_WORLD, &size);
+        MPI_Get_processor_name(name, &len);
+        printf ("Hello world! I'm %d of %d on %s\n", rank, size, name);
+        MPI_Finalize();
+        exit(0);
 }
 </code>
@@ Line 44: / Line 68: @@
 ===C===
 <code>gcc -o hello hello.c</code>
+===C with MPI===
+<code>mpicc -o hello hello.c</code>
 ===Fortran===
 <code>gfortran -o hello hello.f90</code>
-====Sun Studio====
-The following code snippets demonstrate how to compile the above code examples use the Sun Studio compiler suite:
-===C===
-<code>cc -fast -o hello hello.c</code>
-===Fortran===
-<code>f90 -fast -o hello hello.f90</code>
 =====OpenMP=====
@@ Line 65: / Line 86: @@
 <code>ifort -openmp omp_hello.f -o hello</code>
+===Java===
+An example of compiling and executing a simple Java program:
+====MyFirstJavaProgram.java====
+<code>
+public class MyFirstJavaProgram {
+  public static void main(String []args) {
+    System.out.println("Hello World"); // prints Hello World
+  }
+}
+</code>
+To compile this, make sure you have the java module loaded, then:
+<code>
+javac MyFirstJavaProgram.java</code>
+A bytecode-compiled file should be created, named MyFirstJavaProgram.class
+To execute it, run as follows:
+<code>
+java MyFirstJavaProgram
+</code>
 =====MPI=====
-MPI is provided using the OpenMPI libraries.  To compile MPI code use the ''mpicc'' or ''mpif90'' compilers.
+MPI (Message Passing Interface -- [[http://www.open-mpi.org]]) is provided using the OpenMPI libraries.  To compile MPI code use the ''mpicc'' or ''mpif90'' compilers.
-To run an MPI job see the [[guide:moab|Moab guide]].
+To run an MPI job see the man pages for PBS Pro. On the login node, type "man qsub". To obtain an interactive node,
+use ''qsub -I'' The login node prevents long-running processes therefore an interactive node is useful for compilations and builds. To test your code, load the module you want to use first, and then compile your code with it:
+''$mpicc -o bin/test src/hello_world.c''
+To test it:
+<code>mpirun -np 8 bin/test</code>
+You should see something similar to:
+<code>
+Hello world! I'm 7 of 8 on cnode-2-6
+Hello world! I'm 6 of 8 on cnode-2-6
+Hello world! I'm 5 of 8 on cnode-2-6
+Hello world! I'm 1 of 8 on cnode-2-6
+Hello world! I'm 0 of 8 on cnode-2-6
+Hello world! I'm 3 of 8 on cnode-2-6
+Hello world! I'm 2 of 8 on cnode-2-6
+Hello world! I'm 4 of 8 on cnode-2-6
+</code>

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