Can someone elaborate on "LINUX ON MAINFRAMES". Its said, corporates are aggressively adopting linux on mainframes. Gaining momentum. What exactly will be the type of work ?

I think what this refers to is running a single linux kernel image on as many processors as possible. This may be a SGI box with up to 512 processors or perhaps a server farm set up in a cluster configuration.

Typically you would only need this much power for cpu-intensive scientific applications, although I have heard that linux is being used to render cgi effects for hollywood films these days.

Have a look at the sgi/altrix website:
http://www.sgi.com/products/servers/altix/

It can be enlightening to look at the number of subdirectories under /arch in a full-blown Linux source-tree. On my system there are 24. Some, obviously, are close-cousins of other ones, but nonetheless, we have a system here that can run ... the same system ... on a multitude of different architectures.

Linux can also control a huge number of CPUs. It can operate in a computing cluster where CPUs run at differing speeds and are connected in a network that may be fast or slow. This really is "rocket-science stuff." (As to what it may be used for around the world, I'm afraid that you'll pretty-soon need some gosh-darned-high security clearances to find out a lot of it...)

People who are doing "really big computing" on really-big computers, or really-big numbers of computers, or both, can find what they're looking for in Linux ... and, frankly, not a whole lot of other places. There's more to the Penguin than just a happy smile.

IBM packages a version of linux for their mainframes. Basically it allows you to create mulitiple virtual systems in the mainframe.

We use it on our os/390

hei william, i'm having problems installing redhat on s/390. after ipl, we ssh to the newly configured linux system then while it was running /sbin/loader, it just hangs. Gives us blue blank screen.Help? Thanks.