TMPI-Beta/README.txt at master · physnerds/TMPI-Beta · GitHub

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############################################################
#Author: Amit Bashyal
#Advisor: Taylor Childs
#     August 8,2017
#############################################################

#PROJECT TITLE: ROOT MPI
This project builds a TFile like object that uses MPICH (Message
Passing  Interface) libraries and TMemFile for parallelization
of IO process.


#PRE-REQUISITES
1. ROOT (preferably ROOT 6 or higher)
(https://root.cern.ch/) for download and installation instructions

2. MPICH
(http://www.mpich.org/) for download and installation instructions

#INSTALLATION
The following instruction assumes the user has already build/installed
ROOT and CERN in the machine.
1. Create a new working directory for the project (workdir)

2. In the workdir, open the "setenv.sh" file.

3. Replace "source <path/to/ROOTSYS/bin/thisroot.sh" with the actual path.

4. Put path to MPICH header files in "MPIINCLUDES=" .

5. Put  path to MPICH libraries in "MPILIBS=".

6. Save setenv.sh.

7. In the workdir, do "make".

#USAGE EXAMPLE
An example code (./src/test_tmpi.C) shows the usage of the package

Example to run the macro with 10 parallel process:
In the workdir: "mpirun -np 10 ./bin/test_tmpi".


#CREDITS:
I would like to thank HEPCCE (High Energy Physics Center of Computational Excellence)
program and Argonne National Laboratory for providing an opportunity to work on
this project.