Subject:
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Re: Any LDView users with quad-core machine?
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 12 Mar 2008 15:28:25 GMT
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Viewed:
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6685 times
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In lugnet.cad.dev, Travis Cobbs wrote:
> I'm working on SMP support in LDView, and I'd like to have someone with a
> machine with 4 CPU cores test it to see if it works properly on machines with
> more than 2 CPU cores (my CPU is a dual-core). (SMP is symmetric multi
> processing: multiple CPUs, or multi-core CPUs.) If anybody has such a machine,
> or access to one, I'd appreciate it if they could run some tests for me. Please
> contact me, and I'll get back to you with a URL to download the test LDView
> from. Note that I don't care if it's a quad-core CPU, or two dual-core CPUs,
> and the machine can be Windows, Mac OS X, or Linux.
>
> Thanks.
>
> For those who are curious, I'm putting conditional line calculations and
> transparency sorting into background threads. The conditional calculations are
> split up into 32 chunks and allocated to background threads as they become
> available. The sorting goes to a background thread after the conditional
> calculations have completed. With a dual-core machine, there's only one
> background thread (plus the foreground thread once it gets to the point of
> needing the conditional line data). So a machine with more cores would stress
> the code in ways that can't be done with only two cores. On my computer, the
> background conditional calculations speed things up a LOT (almost 2 times) on
> complex models with conditionals enabled, so this could be a really nice feature
> for people with multi-core machines.
>
> --Travis
Hi Travis,
Congratulations on getting SMP working in LDView.
If you can run on Solaris, I have an 8 core with 8 hardware thread box in my
office I could try things on. Maybe you'll only use 32 given the above
algorithm.
I have access to a two processor chip machine with 2x8x8 strands that I might
be able to boot Solaris on.
Kevin
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Message has 1 Reply:
 | | Re: Any LDView users with quad-core machine?
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| (...) Thanks. (...) Yowza! In theory it will run on Solaris as long as QT 3.3 is installed, but I'm not sure if anyone has tried that. Note also that it would have to be a 32 bit compile, which may or may not be easy on Solaris. The current source (...) (17 years ago, 12-Mar-08, to lugnet.cad.dev)
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Message is in Reply To:
| | Any LDView users with quad-core machine?
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| I'm working on SMP support in LDView, and I'd like to have someone with a machine with 4 CPU cores test it to see if it works properly on machines with more than 2 CPU cores (my CPU is a dual-core). (SMP is symmetric multi processing: multiple CPUs, (...) (17 years ago, 11-Mar-08, to lugnet.cad.dev)
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