IBM z/OS - OS/390 UNIX on zSeries Mainframe Development - C89

Here's a nice quick intro to C programming on IBM mainframes :-).

Play with a Cray

Want access to a Cray supercomputer? Ask Cyber-Cray for access.



Visit http://www.cray-cyber.org and request access to their machines.

$ uname -a
sn5176 sn5176 9.0.2.2 sin.0 CRAY Y-MP

6000 CPU Linux Cluster in a single 20KW machine

"SiCortex 5832 is a 5-teraflop single-unit supercomputer."
Bet that got your attention.

"It uses low-power, custom 64-bit MIPS-processor packages, which are basically entire computers on a single chip. 5832 processor cores and 8TB of RAM in one chassis, which draws less than 20 kilowatts of power."



"The SiCortex systems are completely open source, even down to the microcode."

They even say it runs a modified version of *cough* Gentoo Linux and the (now Sun) Lustre Filesystem.

SiCortex also offers a 72 CPU desktop machine that's as big.. well, as a desktop machine :-).

Say hell yes to Desktop HPC:



Read more about their Kautz digraph based fabric and implementation here:
http://www.sicortex.com/products/white_papers

My very own DEC minicomputer - sort of

SIMH is a highly portable, multi-system simulator maintained by Bob Supnik, former DEC engineer and vice president. SIMH runs on pretty much anything: UNIX, BSD, Linux, Windows and even OpenVMS. If you're into historic computing, simulation of historic hardware or trying to migrate some really ancient applications, look into SIMH.

SIMH can also be used to migrate old machines to new platforms. For example, you can run VMS/VAX using SIMH on a modern UNIX system (Vienna's city administration still runs some VMS / VAX systems, and has started migrating them via emulation).

You can even run modern operating systems on SIMH - like OpenBSD/vax.

SIMH implements simulators for:

• Data General Nova, Eclipse
• Digital Equipment Corporation PDP-1, PDP-4, PDP-7, PDP-8, PDP-9, PDP-10, PDP-11, PDP-15, VAX
• GRI Corporation GRI-909
• IBM 1401, 1620, 1130, 7090/7094, System 3
• Interdata (Perkin-Elmer) 16b and 32b systems
• Hewlett-Packard 2114, 2115, 2116, 2100, 21MX
• Honeywell H316/H516
• MITS Altair 8800, with both 8080 and Z80
• Royal-Mcbee LGP-30, LGP-21
• Scientific Data Systems SDS 940

My very own IBM System/370 Mainframe - sort of

Are you intro retro computing or just want to run a really really obscure operating system (something that SIMH may not handle)? Or just want to brush up on your mainframe skills and run bleeding edge z/OS? Well, you really need to try Hercules then :-).



Hercules is an open source (QPL licensed) emulator of IBM Mainframe computers (System/370, ESA/390 architectures and even the 64-bit zSeries). Hercules runs under Linux, Windows (98, NT, 2000, and XP), FreeBSD, and Mac OS X (10.3 and later).

Hercules emulates the CPU and peripheral device hardware and can run the operating system supplied by the user.



Hercules will run OS/360, DOS/360, DOS/VS, MVS, VM/370, TSS/370 - all IBM public domain operating system, as well as OS/390, z/OS, VSE/ESA, z/VSE, VM/ESA, and z/VM, and even Linux/390 and Linux (SuSE, RHEL, Debian, CentOS and Slackware) on zSeries.