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On 14/06/2011 02:04 PM, Francois Labreque wrote:
> All this talk makes me wonder... has there ever been a mainframe port of
> POV-Ray?
1. Yes, almost certainly.
2. Why would that be useful? Mainframes are supposedly optimised for I/O
performance, not compute performance.
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> On 14/06/2011 02:04 PM, Francois Labreque wrote:
>
>> All this talk makes me wonder... has there ever been a mainframe port of
>> POV-Ray?
>
> 1. Yes, almost certainly.
>
> 2. Why would that be useful? Mainframes are supposedly optimised for I/O
> performance, not compute performance.
Ever heard of Cray Supercomputers? ;-)
--
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/* @ */{P(0,a)P(a,b)P(b,c)P(2*a,2*b)P(2*b,b+c)P(b+c,<2,3>)
/* gmail.com */}camera{orthographic location<6,1.25,-6>look_at a }
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On 14/06/2011 02:42 PM, Francois Labreque wrote:
>> 2. Why would that be useful? Mainframes are supposedly optimised for I/O
>> performance, not compute performance.
>
> Ever heard of Cray Supercomputers? ;-)
Depending on who you ask, a supercomputer isn't the same thing as a
mainframe.
When I was at the London Science Museum, I had a chance to see a Cray 2
supercomputer. According to Wikipedia, this was the fastest computer on
Earth when it was first built, managing to achieve a peak performance of
about 1.9 GFLOPS.
...which sounds like a lot, until you realise that the Cray 2 originally
US) which produces about 2,488 GFLOPS.
(Also: Trying to get GFLOPS ratings for recent CPUs is like trying to
find gold dust!)
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Francois Labreque <fla### [at] videotron ca> wrote:
>
> All this talk makes me wonder... has there ever been a mainframe port of
> POV-Ray?
>
I did port a of Povray 3.5 to Linux390, a version of linux that ran on the
IBM 390 series mainframe. Actually it was very simple, download
the povray linux source, and do the standard install. I can't
give any time comparisons since the install was on a mainframe emulator,
not a real machine. If and when I get approval, I would like to install
linux on our mainframe, and of course one of the first things I will
do is install povray. I don't expect it to be that fast compared to
a standard pc. Processor speed is not that much faster than todays
pc's. It has the standard ieee floating point instructions, but its optimized
for commercial business processing, not scientific or engineering type work.
Plus I'll have to come in at 3AM on a Sunday morning when the business workload
is at its lightest.
Isaac.
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