initial commit

Makefile

+CC?=icc
+
+.PHONY: all
+all: hello.exe hello_lib.exe hello_dlopen.exe libhello.so
+
+hello.exe: hello_omp.c
+	$(CC) -g -fopenmp hello_omp.c -o hello.exe
+hello_lib.exe: main_link.c libhello.so
+	$(CC) -g main_link.c -o hello_lib.exe -L. -lhello
+hello_dlopen.exe: main_dlopen.c libhello.so
+	$(CC) -g main_dlopen.c -o hello_dlopen.exe -ldl
+libhello.so: hello_lib.c
+	$(CC) -g -fopenmp -shared hello_lib.c -fPIC -o libhello.so
+
+clean:
+	rm hello.exe hello_lib.exe hello_dlopen.exe libhello.so
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hello_lib.c

+#include <omp.h>
+#include <stdio.h>
+//#include "callback.h"
+#define THREADS 4
+
+void hello(){
+
+
+#pragma omp parallel num_threads(THREADS)
+{
+        printf("Hello from Thread %i of %i\n", omp_get_thread_num(), omp_get_num_threads());
+}
+
+}
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hello_omp.c

+#include <omp.h>
+#include <stdio.h>
+#define THREADS 4
+
+int main(int argc, char** argv){
+
+
+#pragma omp parallel num_threads(THREADS)
+{
+        printf("Hello from Thread %i of %i\n", omp_get_thread_num(), omp_get_num_threads());
+}
+
+}
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main_dlopen.c

+#include <omp.h>
+#include <stdio.h>
+#include <dlfcn.h>
+#define THREADS 4
+
+
+int main(int argc, char** argv){
+
+  void* h = dlopen("libhello.so", RTLD_LAZY);
+  void (*test)() = dlsym(h, "hello");
+  test();
+}

main_link.c

+#include <omp.h>
+#include <stdio.h>
+//#include "callback.h"
+#define THREADS 4
+
+void hello();
+
+int main(int argc, char** argv){
+  hello();
+
+}
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