Re: Any interest in a Floating Point Systems AP-120 array processor?

2021-03-02 Thread Zane Healy via cctalk
> On Mar 2, 2021, at 4:06 AM, Peter Corlett via cctalk > wrote: > > On Mon, Mar 01, 2021 at 10:40:41PM -0800, Boris Gimbarzevsky via cctalk wrote: > [...] >> Out of curiousity, decided to benchmark one of my old, really cheap PC >> laptops that got in 2010 and it managed 30 Mflops using

Re: Any interest in a Floating Point Systems AP-120 array processor?

2021-03-02 Thread Peter Corlett via cctalk
On Tue, Mar 02, 2021 at 01:06:24PM +0100, Peter Corlett via cctalk wrote: [...] > I'll say. Modern kit gets 1 FLOPS per MHz per core [...] And indeed with the speed of modern machines with clock speeds in the GHz and TFLOPS, and thousands of cores in some devices, we use large SI multipliers so

Re: Any interest in a Floating Point Systems AP-120 array processor?

2021-03-02 Thread Peter Corlett via cctalk
On Mon, Mar 01, 2021 at 10:40:41PM -0800, Boris Gimbarzevsky via cctalk wrote: [...] > Out of curiousity, decided to benchmark one of my old, really cheap PC > laptops that got in 2010 and it managed 30 Mflops using double precision > arithmetic. 10 Mflop performance no longer as impressive as it

Re: Any interest in a Floating Point Systems AP-120 array processor?

2021-03-01 Thread Boris Gimbarzevsky via cctalk
That appears to be an earlier model of a similar system we had at UBC which could crunch arrays of FP numbers at 10 Mflops. Had it connected to an 11/44 and just recall doing some frantic programming mainly involving using minimal code as had to use memory management to allocate memory pages

Re: Any interest in a Floating Point Systems AP-120 array processor?

2021-02-28 Thread Bob Smith via cctalk
I recall the FPS AP120B as an add on for PDP11 boxes, 11/45, 11/70 for some serious signal processing apps. bb On Sun, Feb 28, 2021 at 1:48 AM Mark Linimon via cctalk wrote: > > On Sat, Feb 27, 2021 at 08:15:50PM -0800, Josh Dersch via cctalk wrote: > > I picked this up a number of years ago for

Re: Any interest in a Floating Point Systems AP-120 array processor?

2021-02-27 Thread Mark Linimon via cctalk
On Sat, Feb 27, 2021 at 08:15:50PM -0800, Josh Dersch via cctalk wrote: > I picked this up a number of years ago for reasons that entirely > escape me. Those are the best reasons!!!1 :-) mcl

Any interest in a Floating Point Systems AP-120 array processor?

2021-02-27 Thread Josh Dersch via cctalk
I picked this up a number of years ago for reasons that entirely escape me. It's certainly neat, but I don't see myself ever actually using it and it's large and heavy. Documented here: http://bitsavers.trailing-edge.com/pdf/fps/7259-02_AP-120B_procHbk.pdf Mine appears to have a DEC-style