Update README

Signed-off-by: Chen Wang <wangvsa@gmail.com>

Author: wangvsa

README.md

@@ -2,18 +2,47 @@
 
 # Recorder
 
-**A Multi-Level Library for Understanding I/O Activity in HPC Applications**
-
-We believe that multi-level I/O tracing and trace data analysis tool can help
-end users understand the behavior of their application and I/O subsystem, and
-can provide insights into the source of I/O performance bottlenecks.
+**Comprehensive Parallel I/O Tracing and Analysis**
 
 Recorder is a multi-level I/O tracing framework that can capture I/O function
-calls at multiple levels of the I/O stack, including HDF5, MPI-IO, and POSIX
-I/O. Recorder requires no modification or recompilation of the application and
+calls at multiple levels of the I/O stack, including HDF5, PnetCDF, NetCDF, MPI-IO,
+and POSIX I/O. Recorder requires no modification or recompilation of the application and
 users can control what levels are traced.
 
 
-## Documentation
+### Quickstart
+
+Build:
+
+```bash
+git clone https://github.com/uiuc-hpc/Recorder.git
+cd Recorder
+export RECORDER_INSTALL_PATH=`pwd`/install
+git submodule update --init --recursive
+mkdir build && cd build
+cmake .. -DCMAKE_INSTALL_PREFIX=$RECORDER_INSTALL_PATH
+make && make install
+```
+
+Run:
+```bash
+mpirun -np N -env LD_PRELOAD $RECORDER_INSTALL_PATH/lib/librecorder.so ./your-app
+
+# On HPC systems, you may need to use srun or
+# other job schedulers to replace mpirun, e.g.,
+srun -n4 -N1 --overlap --export=ALL,LD_PRELOAD=$RECORDER_INSTALL_PATH/lib/librecorder.so ./your-app
+flux run -n 4 --env LD_PRELOAD=$RECORDER_INSTALL_PATH/ilb/librecorder.so ./your-app
+```
+
+
+### Documentation
 
 Recorder documentation is at [https://recorder.readthedocs.io/](https://recorder.readthedocs.io/).
+
+
+### To cite:
+
+Wang, Chen, Jinghan Sun, Marc Snir, Kathryn Mohror, and Elsa Gonsiorowski. “Recorder 2.0: Efficient Parallel I/O Tracing and Analysis.” In IEEE International Workshop on High-Performance Storage (HPS), 2020.
+[https://ieeexplore.ieee.org/abstract/document/9150354](https://ieeexplore.ieee.org/abstract/document/9150354)
+
+Note that Recorder has undergone significant changes since the last “Recorder 2.0” paper. We have incorporated a new pattern-based compression algorithm, along with many new features. We are preparing a new paper that will describe all these changes in detail.