MIPS

Thread View: vmsnet.pdp-11

3 messages

[T] Back to Threads [V] Tree View [G] Group Articles

3 total messages Started by Andrew Luebker Thu, 21 Jan 1993 17:14

#253

Author: Andrew Luebker
Date: Thu, 21 Jan 1993 17:14

4 lines
615 bytes

I noticed a little chart in the DECdirect catalog, under PDP-11 Upgrades.
It lists the VAX-11/780 equivalents for various PDP machines.  Can anybody
guess how these numbers were computed?  And why is the PDP-11/23 listed
twice (.05 and .12 MIPS) while the 11/23+ has a bigger (.18) rating?

Re: MIPS

#254

Author: Richard Chapman
Date: Fri, 22 Jan 1993 02:49

9 lines
946 bytes

"Andrew Luebker" <aahvdl@eye.psych.umn.edu> writes:

>I noticed a little chart in the DECdirect catalog, under PDP-11 Upgrades.
>It lists the VAX-11/780 equivalents for various PDP machines.  Can anybody
>guess how these numbers were computed?  And why is the PDP-11/23 listed
>twice (.05 and .12 MIPS) while the 11/23+ has a bigger (.18) rating?

If you wouldn't mind typing it in, I'd appreciate seeing that little
chart, and wonder if others do also.

Re: MIPS

#260

Author: Ken Wellsch
Date: Fri, 22 Jan 1993 16:11

20 lines
1270 bytes

> If you wouldn't mind typing it in, I'd appreciate seeing that little
> chart, and wonder if others do also. 

Although some people do not think much of synthetic benchmarks like
dhrystone, I like it for two reasons - it's used extensively on small
systems and more importantly, like any good scientific experiment, it
can be verified/tested/refuted by anyone else because you can just run
the benchmark yourself (if you can compile it 8-)

Here are a few of the runs I've done (and remembered to document):

Dhrystone 2.0 measurments (highest dhrystones/second)

	 331	Pro350 (F11 chip)	(Venix 1.1)
	 585	Pro380 (J11 chip)	(Venix 1.1)
	 714	LSI-11/73		(Ultrix 3.0)
	 857	PDP-11/44		(Ultrix 3.0)

I will have to check but I believe I got around 500 on a true blue
IBM XT running at 4.77MHz just for comparison.

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads