This repository improves on the MUMPS interpreter by Professor Kevin C. O'Kane at the University of Northern Iowa. It can use a native B-tree implementation for the storage, or it can use a MySQL or PostgreSQL database. Visit Professor O'Kane's staff website for more information.
As a student at New York University, I made some improvements to the codebase for CS-GY 6513 Big Data, taught by Professor Raman Kannan. I tested building on an AMD64 platform and in an IBM Cloud environment, which uses PowerPC. For this class, I used MySQL as the underlying storage engine.
The IBM Cloud computing facility was 100% underwritten by the IBM Power Systems Academic Initiative. Thanks, IBM!
I fixed a few minor bugs, but the main addition that I made was the ability to prompt the user for the database username and password when using a SQL DB as the underlying storage engine instead of the native B-tree implementation. You can see this code in dbcreds.cpp. To facilitate bounds checking, I added two variables:
$zsqldatasizeis the maximum length of a string that can be stored as a value in a MUMPS global.$zsqlindexsizeis the maximum length of a string that can be used as a subscript with a MUMPS global.
Please see the original manual for full instructions. The following instructions are for building Open MUMPS with database credential prompts, with MySQL as the underlying storage engine, and without GNU Multiple Precision.
First, install required packages:
sudo apt install libmysqlclient-dev
If you are using a different package manager, substitute its command in the
place of the one with apt.
There are various *.script files that help install the interpreter, but I did
not use them. To install for your user only:
./configure --with-hardware-math --with-mysqldb --with-mysql-host=127.0.0.1 --with-db-cred-prompt
make && make install
This will install MUMPS to ~/mumps_compiler/bin/. You may want to edit
~/.profile to include this in your path environment variable.
To install for all users:
./configure prefix=/usr --with-hardware-math --with-mysqldb --with-mysql-host=127.0.0.1 --with-db-cred-prompt
make && sudo make install
If your MySQL server is not at 127.0.0.1, substitute its IP address in your
command. You can also change the port number with --with-mysql-port=[number].