sashahc Posted September 18, 2012 Report Share Posted September 18, 2012 We are creating a video wall with the following hardware: 8 @ HP Z800 computers with ATI V9800 FirePro + S400 Sync Module. Currently, we have two SSD's: 1 for OS and 1 for media. We are running 5 @ 1080p sync'd MPEG 2 videos from each machine and are seeing a slight stutter when loading new media (all 5 streams at once.) We've tried various preload settings, but they seem to cause the videos to start out of sync. Would we see performance improvement by making the media disc a striped RAID array? Alternately, is there a way to do preloading so it doesn't interfere with the video starting? 0 Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted September 18, 2012 Report Share Posted September 18, 2012 What processor and SSD is used? /jonas 0 Quote Link to comment Share on other sites More sharing options...
Moderator jfk Posted September 18, 2012 Moderator Report Share Posted September 18, 2012 sashahc, what is the frame rate of your 1080p videos? What processor and SSD is used? /jonas That is certainly a valid question. HP Z800 is fairly generic. Covers two motherboards, 14 potential processors and even more drive storage options. Both the available motherboards indicated in the above spec are for aging standards replaced in 2011 with higher throughput versions. Seems those motherboards only support SATA-II, SATA-III with double the throughput would usually be required for the demands you indicate. Would we see performance improvement by making the media disc a striped RAID array? Alternately, is there a way to do preloading so it doesn't interfere with the video starting? Depends on if the limiting factor is the drive throughput, motherboard throughput or processor throughput (QPI). With such a general spec, it is impossible to tell. 0 Quote Link to comment Share on other sites More sharing options...
sashahc Posted September 18, 2012 Author Report Share Posted September 18, 2012 Computer: VA7883UT#ABA Processor: Xeon E5649 2.53 GHz SSDs: intel SSD 320 Series 3Gb/s SATA 0 Quote Link to comment Share on other sites More sharing options...
sashahc Posted September 18, 2012 Author Report Share Posted September 18, 2012 Frame rate is 29.97fps. We have just switched to a PC compression workflow, which has greatly improved sync (within one machine). 0 Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted September 19, 2012 Report Share Posted September 19, 2012 Stuttering can have different reasons, hardware issues is but one of them. Frame-rate and/or bit-rate based issues is another. Mac or Windows based encoding does not have much to do with that, but how it's done certainly has. /jonas 0 Quote Link to comment Share on other sites More sharing options...
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