New README

README.md

@@ -3,23 +3,49 @@
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-RADICAL-Pilot (RP) is a Pilot system written in Python and specialized
-in executing applications composed of many computational tasks on high
-performance computing (HPC) platforms. As a Pilot system, RP separates resource
-acquisition from using those resources to execute application tasks. Resources
-are acquired by submitting a job to the batch system of an HPC machine. Once
-the job is scheduled on the requested resources, RP can directly schedule and
-launch application tasks on those resources. Thus, tasks are not scheduled via
-the batch system of the HPC platform, but directly on the acquired resources.
+RADICAL-Pilot (RP) executes workloads made of heterogeneous tasks with maximum concurrency and at scale. 
+
+RP is a Pilot system, i.e., it separates resource acquisition from using those resources to execute application tasks. Resources are acquired by submitting a job to the batch system of an HPC machine. Once the job is scheduled on the requested resources, RP can directly schedule and launch computational tasks on those resources. Thus, tasks are not scheduled via the batch system of the HPC platform, but directly on the acquired resources.
+
+RP is written in Python and exposes a simple yet powerful API. In 15 lines of code you can execute an arbitrary number of arbitrary executables with maximum concurrency on your Linux machine or, by changing a key of a dictionary, on the largest HPC platforms available to scientists.
+
+```python
+import radical.pilot as rp
+
+# Create a session
+session = rp.Session()
+
+# Create a pilot manager and a pilot
+pmgr    = rp.PilotManager(session=session)
+pd_init = {'resource': 'local.localhost',
+           'runtime' : 30,
+           'cores'   : 4}
+pdesc   = rp.PilotDescription(pd_init)
+pilot   = pmgr.submit_pilots(pdesc)
+
+# Crate a task manager and describe your tasks
+tmgr = rp.TaskManager(session=session)
+tmgr.add_pilots(pilot)
+tds = list()
+for i in range(8):
+    td = rp.TaskDescription()
+    td.executable     = 'sleep'
+    td.arguments      = ['10']
+    tds.append(td)
+
+# Submit your tasks for execution
+tmgr.submit_tasks(tds)
+tmgr.wait_tasks()
+
+# Close your session
+session.close(cleanup=True)
+```
 
 ## Documentation
 
-Full system description and usage examples are available at:
-https://radicalpilot.readthedocs.io/en/stable/
+Full system description and usage examples are available at: https://radicalpilot.readthedocs.io/en/stable/
 
-Additional information is provided in the
-[wiki](https://github.com/radical-cybertools/radical.pilot/wiki) section of RP
-GitHub repository.
+Additional information is provided in the [wiki](https://github.com/radical-cybertools/radical.pilot/wiki) section of RP GitHub repository.
 
 ## Code