Simh speed
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Steven A. Falco
Apr 1, 2025, 2:22:28 PM4/1/25
to [PiDP-11]
I was reading through the 1995 setup document by Steven Schultz for 2.11BSD, and he mentioned that if you rebuild the entire /usr area from source that it takes about 12 hours on an 11/44.
I just did that on my PiDP-11, powered by an RPi-5. The compilation only took 1 hour total!
I guess that means that the Simh 11/70 is running somewhere around 12 times faster than a real 11/44.
Pretty amazing to be able to simulate at those speeds.
Steve
I just did that on my PiDP-11, powered by an RPi-5. The compilation only took 1 hour total!
I guess that means that the Simh 11/70 is running somewhere around 12 times faster than a real 11/44.
Pretty amazing to be able to simulate at those speeds.
Steve
Steve Platt
Apr 1, 2025, 2:38:01 PM4/1/25
to [PiDP-11]
At least as far as compilation tests are concerned, which focus on IO/file streaming and a modicum of data structure manipulation.
Might be interesting to run some FP benchmarks on the PiDP-11 and compare that to PDP-11/44 performance as well.
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Might be interesting to run some FP benchmarks on the PiDP-11 and compare that to PDP-11/44 performance as well.
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