Update for ptask.

git-svn-id: https://svn.onera.fr/Prelude/Prelude/trunk@893 49f62630-d767-4ccd-930e-b3f5589f52e1

examples/sampling_loop/README

-Requirements
-------------
+Executing with Linux
+------
+Pre-requisites
 - Prelude
-- Schedmcore (see http://sites.onera.fr/schedmcore/)
+- ptask (https://github.com/glipari/ptask)
+- the liballegro package
+
+To build and execute (the sampling example) in mono-core:
+make -f ../../share/ptask_wrapper.make NODE=sampling PROG=sampling
+sudo sh -c "echo -1 > /proc/sys/kernel/sched_rt_runtime_us"
+./sampling
+
+For multi-core, compile with ptask_wrapper_aer.make instead.
+
+Executing with SchedMCore
+------
+Pre-requisites:
+- Prelude
+- SchedMCore (see http://sites.onera.fr/schedmcore/)
 - "cmake", a package should be available for most Linux architectures
 
-To execute in monocore mode, you can for instance use the following sequence of commands:
+To build and execute, you can use the following sequence of commands:
 1) mkdir build
 2) cd build
 3) cmake -DPRELUDE_PATH_HINT=/INSTALL_DIR/prelude-x.x/ ..
 4) make
-5) lsmc_run -l ./libsampling.so -s pluedf -c 1 -b 1000
+5) lsmc_run -l ./libsampling-noencoding.so -s edf -c 4 -b 1000
+This will run the program on 4 cores with the EDF scheduling
+policy, with a Prelude time unit set to 1ms.
 
-To execute in multicore mode:
-1) Edit CMakeLists.txt and change the Prelude_Compile command to replace
-it by the commented version
-2) mkdir build
-3) cd build
-4) cmake -DPRELUDE_PATH_HINT=/INSTALL_DIT/prelude-x.x/ ..
-5) make
-6) lsmc_run -l ./libsampling.so -s edf -c 4 -b 1000
-This example will run the program on 4 cores with the classic EDF policy.
+To compile your own program, change the MODEL_NAME variable in file
+CMakeLists.txt
 
-To adapt this Makefile to your own program, simply change the MODEL_NAME
-variable in file CMakeLists.txt
+To change compilation options, modify the Prelude_Compile variable,
+according to the options defined in ../../share/FindPrelude.cmake