Re: OFFTOPIC: Linux Kernel is Too Good.

Olaf Titz (olaf@bigred.inka.de)
Sat, 07 Feb 1998 11:58:27 +0100


> I have run a very trivial program called loops.c:

Which measures only floating point performance (and doesn't count if
anything else runs on that box, to get meaningful results run it in
single user mode).

> 2. IBM ThinkPad 755c, Linux 2.0.32: 46 seconds
> 4. IBM SP node, running some (??) RISC 135MHz, 8proc: 42 seconds

*grin*

If this is the same sort of SP node which we have here, this is not
much more than an RS6000 workstation. There are faster desktop boxes
on the market by now...

(of course, AIX isn't much of a performance miracle anyway)

> that his new fresh (half-a-million-worth) 8-processor SP node can just

...the one thing which is really impressive and expensive about SPs is
the communication hardware.

That's the nice thing about modern parallel architectures. Just
use a farm of run-of-the-mill medium size workstations and with a good
network and the right software (admittedly, that's the weak point of
IBM SPs by now) you get to beat traditional supercomputers.

olaf

PS. I doubt your benchmark used more than one of the 8 CPUs.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu