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High CPU usage for long periods of time

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  • J Offline
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    Jim Crafton
    wrote on last edited by
    #1

    Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

    ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

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    • J Jim Crafton

      Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

      ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

      J Offline
      J Offline
      John M Drescher
      wrote on last edited by
      #2

      No. I run processes that take hours at 100% CPU on 8 threaded processors. Sometimes I have batches running for a week or so.

      John

      1 Reply Last reply
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      • J Jim Crafton

        Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

        ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

        A Offline
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        Andy Brummer
        wrote on last edited by
        #3

        You shouldn't have any problem with a properly configured system. You know, there was a time when all CPUs ran 100% all the time. Until desktop systems started changing cpu speeds based on load, the wasn't any difference between application code and running in the idle loop.

        I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

        L 1 Reply Last reply
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        • J Jim Crafton

          Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

          ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

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          dighn
          wrote on last edited by
          #4

          Like others said, unless your machine is poorly built, that is well within design specs. If you are paranoid, just download some temperature monitoring software (e.g. "motherboard monitor") and see if it goes too high. Besides temperature though, high load is more likely to reveal other problems like RAM timing/motherboard stability issues. -- Modified Monday, April 19, 2010 3:33 PM

          J 1 Reply Last reply
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          • J Jim Crafton

            Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

            ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

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            Steve McLenithan
            wrote on last edited by
            #5

            I've been running Folding/SETI/MilkyWay@Home for years straight now. 100% all the time

            // Steve McLenithan

            D 1 Reply Last reply
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            • A Andy Brummer

              You shouldn't have any problem with a properly configured system. You know, there was a time when all CPUs ran 100% all the time. Until desktop systems started changing cpu speeds based on load, the wasn't any difference between application code and running in the idle loop.

              I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

              L Offline
              L Offline
              Lost User
              wrote on last edited by
              #6

              Oh noes! I see a partial untruth. On new CPU's (well "new" is relative.. all CPU's with ACPI - so basically all) merely executing a HLT instruction (as is done by the "System Idle Process") can make it go into a lower (C1) power state (usually configurable in the BIOS settings) So even on Win2k (which does not use P states) or when you disable SpeedStep/Cool'n'Quiet the CPU load affects heat output.

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              • D dighn

                Like others said, unless your machine is poorly built, that is well within design specs. If you are paranoid, just download some temperature monitoring software (e.g. "motherboard monitor") and see if it goes too high. Besides temperature though, high load is more likely to reveal other problems like RAM timing/motherboard stability issues. -- Modified Monday, April 19, 2010 3:33 PM

                J Offline
                J Offline
                John M Drescher
                wrote on last edited by
                #7

                dighn wrote:

                and see if it goes too high.

                And for Intel processors too high is over 100C. At 100C the processor should begin to throttle down the core speed so even that should not be too dangerous.

                John

                1 Reply Last reply
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                • L Lost User

                  Oh noes! I see a partial untruth. On new CPU's (well "new" is relative.. all CPU's with ACPI - so basically all) merely executing a HLT instruction (as is done by the "System Idle Process") can make it go into a lower (C1) power state (usually configurable in the BIOS settings) So even on Win2k (which does not use P states) or when you disable SpeedStep/Cool'n'Quiet the CPU load affects heat output.

                  A Offline
                  A Offline
                  Andy Brummer
                  wrote on last edited by
                  #8

                  I don't remember that on my 386 :)

                  I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

                  L 1 Reply Last reply
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                  • A Andy Brummer

                    I don't remember that on my 386 :)

                    I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

                    L Offline
                    L Offline
                    Lost User
                    wrote on last edited by
                    #9

                    Well the 386 was designed more than ten years before ACPI was released..

                    J 1 Reply Last reply
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                    • L Lost User

                      Well the 386 was designed more than ten years before ACPI was released..

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                      Jim Crafton
                      wrote on last edited by
                      #10

                      I think that was his original point :)

                      ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

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                      • J Jim Crafton

                        I think that was his original point :)

                        ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #11

                        :doh: it seems that I'm sillier than usual today

                        1 Reply Last reply
                        0
                        • J Jim Crafton

                          Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

                          ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                          P Offline
                          P Offline
                          peterchen
                          wrote on last edited by
                          #12

                          You should definitely take a test run monitoring CPU, disk and case temperature. Desktop systems often don't have enough airflow. Nothing that can't be fixed with another fan or two. Oh, and make sure the room the box stands in is big enough to cope with it. I'm running Folding at Home permanently on 3 of 4*2(HT) cores.

                          Agh! Reality! My Archnemesis![^]
                          | FoldWithUs! | sighist | µLaunch - program launcher for server core and hyper-v server.

                          1 Reply Last reply
                          0
                          • J Jim Crafton

                            Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

                            ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                            J Offline
                            J Offline
                            Jeremy Falcon
                            wrote on last edited by
                            #13

                            I used to work a 3d animation studio. We didn't have a proper render farm, so many o' times during the night we'd have all the machines at work render scenes for commercials. I never had any problems with the machines overheating. Just so as long as they are properly cooled to begin with. I mean I'm sure if you did this for like 5 months in a row you'd hit a snag, but I doubt it would be too much to overcome. That being said, a 100+ machine render farm would totally rock. Too bad I haven't won the lottery yet.

                            Jeremy Falcon

                            1 Reply Last reply
                            0
                            • J Jim Crafton

                              Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

                              ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                              J Offline
                              J Offline
                              Jeremy Falcon
                              wrote on last edited by
                              #14

                              And do we get to see the animation when it's done? :-\

                              Jeremy Falcon

                              J 1 Reply Last reply
                              0
                              • J Jeremy Falcon

                                And do we get to see the animation when it's done? :-\

                                Jeremy Falcon

                                J Offline
                                J Offline
                                Jim Crafton
                                wrote on last edited by
                                #15

                                Hell yeah! You think I'm going to go to all this trouble just to store a video on my HD? Puhhlease!!!!

                                ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                                1 Reply Last reply
                                0
                                • J Jim Crafton

                                  Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

                                  ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                                  H Offline
                                  H Offline
                                  hammerstein05
                                  wrote on last edited by
                                  #16

                                  Develop Jim@Home and I'll gladly lend my spare cycles to your animation processing.

                                  E 1 Reply Last reply
                                  0
                                  • J Jim Crafton

                                    Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage? I'm planning on making some animation, and with each frame taking about 5-7 minutes each, a single second of animation is going to come in around 2 hours 20 minutes or worse. For a 10 to 20 second clip that could easily cause the CPU to run at 100% for almost 12 hours or more. I've never had anything run that long on any system I've owned and I'm not sure if it's going to overheat the box, or if it's hard on the CPU to run that long. Anyone have any experience with this on a desktop system (for the record it's an 8 core MacPro)?

                                    ¡El diablo está en mis pantalones! ¡Mire, mire! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF! Personal 3D projects Just Say No to Web 2 Point Blow

                                    L Offline
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                                    leppie
                                    wrote on last edited by
                                    #17

                                    Jim Crafton wrote:

                                    Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage?

                                    Nope, but then again I have water-cooling[^] :cool: I think the 8core macs are the same as the i7 900 series, so your CPU can handle temps up to 99 deg C (not that you want it that high, just saying). Running continuously, I would not feel happy if it was over 80 deg.

                                    xacc.ide
                                    IronScheme - 1.0 RC 1 - out now!
                                    ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x))) The Scheme Programming Language – Fourth Edition

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                                    • L leppie

                                      Jim Crafton wrote:

                                      Has anyone had any problems with running a job for more than an hour that pushes most of the CPU cores to 100% usage?

                                      Nope, but then again I have water-cooling[^] :cool: I think the 8core macs are the same as the i7 900 series, so your CPU can handle temps up to 99 deg C (not that you want it that high, just saying). Running continuously, I would not feel happy if it was over 80 deg.

                                      xacc.ide
                                      IronScheme - 1.0 RC 1 - out now!
                                      ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x))) The Scheme Programming Language – Fourth Edition

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                                      AspDotNetDev
                                      wrote on last edited by
                                      #18

                                      leppie wrote:

                                      Nope, but then again I have water-cooling

                                      Pft, that's nothing compared to submerged oil cooling. :rolleyes:

                                      [Forum Guidelines]

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                                      • A AspDotNetDev

                                        leppie wrote:

                                        Nope, but then again I have water-cooling

                                        Pft, that's nothing compared to submerged oil cooling. :rolleyes:

                                        [Forum Guidelines]

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                                        L Offline
                                        leppie
                                        wrote on last edited by
                                        #19

                                        I have seen that before, but it sure seems like a lot of hassle (and a lot of other little issues).

                                        xacc.ide
                                        IronScheme - 1.0 RC 1 - out now!
                                        ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x))) The Scheme Programming Language – Fourth Edition

                                        A 1 Reply Last reply
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                                        • L leppie

                                          I have seen that before, but it sure seems like a lot of hassle (and a lot of other little issues).

                                          xacc.ide
                                          IronScheme - 1.0 RC 1 - out now!
                                          ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x))) The Scheme Programming Language – Fourth Edition

                                          A Offline
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                                          AspDotNetDev
                                          wrote on last edited by
                                          #20

                                          Yeah, and the cooling is not even that great unless you pump the oil through a tube and cool that. But it's still neat. :)

                                          [Forum Guidelines]

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