diff --git a/include/base.h b/include/base.h
index 6614f06..9412f15 100644
--- a/include/base.h
+++ b/include/base.h
@@ -24,6 +24,7 @@
 #include <unistd.h>
 #include <stdio.h>
 #include <malloc.h>
+#include <string.h>
 
 #define BASE_H
 
@@ -37,6 +38,9 @@ struct {
     int *space;
 } typedef IntArray_t;
 
+#define LOGMSG "[%s]"
+#define printLog(FORMAT, ...) printf(LOGMSG " " FORMAT, __func__, ##__VA_ARGS__)
+
 //
 // Scheduler
 //
@@ -58,10 +62,13 @@ struct {
 //
 // Local threads
 //
-struct {
+struct Center_t {
     int x;
     int y;
     int z;
+
+    struct Center_t *next;
+    struct Center_t *prev;
 } typedef Center_t;
 
 struct {
diff --git a/src/main.c b/src/main.c
index 6be34a5..154547e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -53,6 +53,8 @@ void SchedulerCrashTest(void)
 
 int main(int argc, char **argv)
 {
+    printLog("Starting gem-graph-server...\n");
+
     //
     // Creating parameters structure for the Scheduler
     //
diff --git a/src/scheduler.c b/src/scheduler.c
index 782352b..301228d 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -22,6 +22,8 @@
 #include "../include/base.h"
 #include "../include/localworker.h"
 
+#include <sys/sysinfo.h>
+
 static void *GreatScheduler(void *parameters);
 
 /* -------------------------------------------------------------------------- */
@@ -36,14 +38,59 @@ pthread_t *SchedInit(SchedulerParams_t *parameters)
     return parameters->id;
 }
 
+// -------------------------------------------------------------------------- //
+// Center_t management functions                                              //
+// -------------------------------------------------------------------------- //
+static inline void centerAssign(Center_t *center, int x, int y, int z)
+{
+    center->x = x;
+    center->y = y;
+    center->z = z;
+}
+
+static inline Center_t *centerAdd(Center_t *anyCenter)
+{
+    Center_t *newCenter = (Center_t*) malloc(sizeof(Center_t));
+
+    Center_t *temp = anyCenter->next;
+    anyCenter->next = newCenter;
+    newCenter->next = temp;
+    newCenter->prev = anyCenter;
+
+    if (temp) {
+        temp->prev = newCenter;
+    }
+
+    return newCenter;
+}
+
+static inline void centerRemove(Center_t *oldCenter)
+{
+    Center_t *prev = oldCenter->prev;
+    Center_t *next = oldCenter->next;
+
+    prev->next = next->prev;
+    next->prev = prev->next;
+
+    free(oldCenter);
+}
+
 // -------------------------------------------------------------------------- //
 // Scheduler thread main function                                             //
 // -------------------------------------------------------------------------- //
 static void *GreatScheduler(void *params)
 {
+    // récupération des paramètres et annonce
     SchedulerParams_t *parameters = (SchedulerParams_t*) params;
+    printLog("Scheduler id %lu: Bonjour I'm the boss !\n", *(parameters->id));
 
-    printf("Scheduler id %p: I'm alive!\n", parameters->id);
+    int ncpu = get_nprocs();
+    printLog("%d CPUs available.\n", ncpu);
+
+    Thread_t *workerArray = (Thread_t*) malloc(sizeof(Thread_t) * 3 * ncpu);
+    Center_t *centersList = (Center_t*) malloc(sizeof(Center_t));
+
+    centerAssign(centersList, -1, -1, -1);
 
     return NULL;
 }