POSYBL is a public-domain implementation of the Linda parallel processing environment, running on Ethernets.

The original package is available at the Finland site. This Web page provides access to Professor Norm Matloff's somewhat enhanced version of the package. Within the same directory, please download the the original package (mirrored here) and also my enhancement package, which contains the following:

• Two replacement modules, for sys_util.c and tmanager.c in the src directory of the original POSYBL package. These allow users of POSYBL to specify a network port number. (To see the changes made by Prof. Matloff, simply search the source files for "NM".)

• A front-end program to serve as the "master" or "manager" which runs the "slave" or "worker" programs. This program is quite general except that it assumes only integer arguments. (It can easily be modified for other cases.)

• A test program which is to be used together with this front end.

Then in this directory do the following:

gunzip -c POSYBL.tar.gz | tar xf -
gunzip -c NMSuppFiles.tar.gz | tar xf -
cd POSYBL/src
cp ../../NMsys_util.c sys_util.c
cp ../../NMtmanager.c tmanager.c
make
cp tmanager startup system ../bin
cp libposybl.a ../lib
cd ../bin
cc -g -o POSYBLFrontEnd ../../POSYBLFrontEnd.c ../lib/libposybl.a
cc -g -o PrimeWorker ../../PrimeWorker.c ../lib/libposybl.a

Read the POSYBL notes by Dr. Matloff to see how to use POSYBL.

Other software Web sites by Norm Matloff:

• Professor Matloff's Unix/C tutorials.

• Dr. Matloff's introduction to the mutt e-mail utility. Don't use pine! It was designed for people who are afraid of computers, not for computer experts.

• His introduction to the elvis text editor. It is much better than ordinary vi (and far, FAR better than pico). X11 mouse capability; subwindows (even on nongraphics terminals); infinite undo; paragraph formatting and so on.

• Norm Matloff's guide to fast debugging!

• Dr. Matloff's beginner's guide to installing and using Linux.

• His general guide to editing program source code.

• Norm Matloff's Chinese-language software page.