waynekford's Posts

waynekford's Posts

Thanks for your interest.  I tried penetrating Dell to find out something about compliance.  They vectored me to this board. What I'm trying to avoid is to plan on the T1700 series workstation for ... See more...
Thanks for your interest.  I tried penetrating Dell to find out something about compliance.  They vectored me to this board. What I'm trying to avoid is to plan on the T1700 series workstation for our product.  I don't  have a properly configured T1600 here (our test system is in the UK where the software engineer is), but they appear to have identical PCIe specs in the public documentation.  What particularly bothers me is that our hardware doesn't have a problem with the ASUS motherboard.  (Dell's appeal to us is in part, that they are worldwide.  So we are hesitant to change to a smaller system vendor.) I'm looking here for somebody who has had issues with the PCIe on the 1600 MB and whether they could explain our problems.
We walked through the entire list posted at Dell to be sure the software/firmware was up to date.  There are no reported problems with RAM during these tests.  The DMA transactions are randomly stall... See more...
We walked through the entire list posted at Dell to be sure the software/firmware was up to date.  There are no reported problems with RAM during these tests.  The DMA transactions are randomly stalled for a millisecond (or less, variable, we've measured this).  It seems to be purely a bus transaction issue.  As you suspect, we doubt that Dell is fully complying with the PCIe spec for x16 transfers.
Oh, yes.  Firmware and bios checks were the first things we looked at, once we realized the issue is not our add-in card but something else on the Dell.
We are trying to complete the development of a high speed image capture card.  It is a PCIe card that is channeled into a Dell Precision T1600 workstation via a DataPath PCIe bus extender.  Data is d... See more...
We are trying to complete the development of a high speed image capture card.  It is a PCIe card that is channeled into a Dell Precision T1600 workstation via a DataPath PCIe bus extender.  Data is dma'd into the Dell.  During testing, we found that a rare and irregular spaced latency occurs, for up to 1 ms, during the DMA.  The card is to handle large (100GB-1TB sized) image files, and this latency corrupts the resultant "image".  We were targeting a T1700 platform for the product until this issue arose.  We tested the same hardware using an ASUS motherboard and detected no errors over a 24 period.  We've excluded processor loading, etc. Is this bug possibly already known?  Is there a work around?