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    Performance / dual core?

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    • camilozk
      camilozk last edited by

      hi people!

      I am working on a patch that processes (heavily) video from a live capture. my processor is a 2.4ghz one, and I cannot work in a 720 * 576 resolution, because my frame rate goes deeply down. so I am right now testing the patch in a 360 * 288 resolution, but of course, for screening matters, this is not perfect.
      So, I am going to build a desktop computer with a 3.4ghz processor. (desktop because its cheaper)
      now, the question is, since I am still not sure if it is going to work correctly under a 720 * 576 resolution and 25 fps, **would it be better to build a computer with 2 physical 3.40ghz processor? did anybody tried a motherboard supporting 2 processors?**
      how would this work.
      thanks!
      leo.-

      i5 M520 @ 2.40GHz / 4Gb Ram / Win 7 - izzy 2.2.2
      i7 7700HQ @ 2.8GHz / 16Gb Ram / Win 10 - izzy 2.6.1 / GeForce GTX 1060
      AMD Ryzen 7 5800H / 16Gb Ram / Windows 11 / Radeon Graphics 3.20 GHz

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      • keftaparty
        keftaparty last edited by

        hi,

        What kind of video capture card do you use ?
        This changes a lot how heavy it is.
        Can you describe your actual machine ?
        With 2.8gHz Core2Duo I used to capture 2 x 720x576 streams, with a very low impact on performances.
        I was using internal dedicated video capture cards ( like blackmagic intensity )
        Best
        Mehdi

        ...
        Mehdi Toutain-Lopez
        www.toutain-lopez.com

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        • camilozk
          camilozk last edited by

          I use a canon camera, hv40, connected via firewire.

          Processor Intel® Core™ i5-520M Processor (2.40 GHz, 3 MB L3 cache)
          Graphics NVIDIA NVS 5100M graphics with 1 GB dedicated DDR3 memory
          The Live capture is not the issue. the issue are all the processes that comes afterwards.

          i5 M520 @ 2.40GHz / 4Gb Ram / Win 7 - izzy 2.2.2
          i7 7700HQ @ 2.8GHz / 16Gb Ram / Win 10 - izzy 2.6.1 / GeForce GTX 1060
          AMD Ryzen 7 5800H / 16Gb Ram / Windows 11 / Radeon Graphics 3.20 GHz

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          • vanakaru
            vanakaru last edited by

            I think the live capture is the problem, since you capture firewire=DV that is very CPU hungry. Try different camera (just for a test) some USB cam for instance.

            MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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            • camilozk
              camilozk last edited by

              I will, but actually I remember reading in the past that live capture from a firewire device consumes very little or none CPU resources.

              And, usb does consum CPU resources.
              anybody else knows about this?
              anyway, and going back to my original question, I know that the main problem is the processes that I am applying later, since I have tried the patch without a live capture, but with a movie player, and the performances problems remain.
              so how would a computer with 2 physical 3.40ghz processors impact in the performance?
              Thanks!

              i5 M520 @ 2.40GHz / 4Gb Ram / Win 7 - izzy 2.2.2
              i7 7700HQ @ 2.8GHz / 16Gb Ram / Win 10 - izzy 2.6.1 / GeForce GTX 1060
              AMD Ryzen 7 5800H / 16Gb Ram / Windows 11 / Radeon Graphics 3.20 GHz

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              • mark
                mark last edited by

                Dear Camilozk,

                Regarding your question "so the topic of this thread mainly is, how would a computer with 2 physical 3.40ghz processors impact in the performance?"
                First, I am not an expert on this topic, and certainly I don't know if a second _physical_ processor would be any different than having more cores.
                The video capture task is handled by Windows operating system, but, of course, once the video data is actually captured, Isadora does the rest. Isadora is not multi-threaded at this time, not that this is going to make a significant difference if you're putting that video through lots of effects etc. So, to sum up 1) the actual act of capturing from the camera may be improved by more CPUs, etc. because the Windows subsystem may move those tasks to other processors, 2) the effects processing in Isadora (meaning actors like Desaturate or HSL Adjust, etc.) will not benefit because it is not multi-threaded.
                Hopefully that helps; I'm sorry that I can't give a better answer.
                Best Wishes,
                Mark

                Media Artist & Creator of Isadora
                Macintosh SE-30, 32 Mb RAM, MacOS 7.6, Dual Floppy Drives

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                • camilozk
                  camilozk last edited by

                  thank you mark

                  i5 M520 @ 2.40GHz / 4Gb Ram / Win 7 - izzy 2.2.2
                  i7 7700HQ @ 2.8GHz / 16Gb Ram / Win 10 - izzy 2.6.1 / GeForce GTX 1060
                  AMD Ryzen 7 5800H / 16Gb Ram / Windows 11 / Radeon Graphics 3.20 GHz

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