Add README for pb_submitter

pb_utils/README.md

+# dependencies
+- build is tested on a ubuntu
+- for qemu minimum needed: `sudo apt install qemu qemu-system-x86`
+
+# build
+## create an image file with a debian rootfs (only needed first time)
+
+run `./create_image.sh`, this downloads dbootstrap and installs a debian into a image file
+
+## chroot into debian rootfs to build the kernel
+(build on your system is possible, but for example ubuntu 20.04 libs throw exceptions)
+
+run `./chroot_image.sh`, this drops you in a shell on the created debian
+
+to build:
+```bash
+apt update
+apt-get install -y fakeroot build-essential ncurses-dev xz-utils libssl-dev bc flex libelf-dev bison
+cd /mnt
+./build
+```
+
+# run the build kernel with the created rootfs
+run `./run_qemu.sh`
+
+# debug using gdb
+run `./run_qemu.sh gdb`
+
+run in a seperate shell:
+```bash
+cd .. # to workspace root
+
+gdb vmlinux \
+    -ex 'lx-symbols' \
+    -ex 'target remote :1234' \
+    -ex 'hb init_pb_rq'
+```
+
+look for gdb `add-auto-load-safe-path` warning and follow instruction to enable loading of kernel gdb scripts
+
+use hardware breakpoints instead of software breaks

pb_utils/pb_submitter/README.md

+# build
+run `./build.sh`, this will compile `pb_submitter.c` and `test_prog.c` and move them combined with `example_plan` and `example_run.sh` into the qemu-image which should be located at `../build/qemu-image.img`.
+
+# run
+Afterwards simply execute `./run_qemu.sh` in the parent directory followed by `./example_run.sh` in the debian VM to submit the `example_plan` for the `test_prog` to the PBS.
\ No newline at end of file

pb_utils/pb_submitter/pb_submitter.c

@@ -63,8 +63,6 @@ int main(int argc, char** argv)
 
     plan.num_tasks = count_lines(fp);
 
-    printf("num_tasks: %zu \n", plan.num_tasks);
-
     uint64_t* inst_cnt = calloc(plan.num_tasks, sizeof(uint64_t));
     if (inst_cnt == NULL) {
         perror("calloc");
@@ -91,8 +89,6 @@ int main(int argc, char** argv)
 
     plan.inst_cnt = inst_cnt;
 
-    printf("Execve: %s \n", argv[1]);
-
     pid_t pid = fork();
 
     if (pid == 0x0) {