MyBologna

Hello LTT communitty, I have write cache enabled on my nvme SSD. When I write very large files to it (>100 GB) for work, they usually take up RAM first with no disk write until it gets to 99% RAM utilization then finally something gets triggered at it starts writing to my SSD at super high speed (~1GB/s). This is generally a good thing, but I wish it would flush at a lower threshold e.g. 80% of RAM. I have 64 GB of RAM, so it doesn't need to use every last drop for the write cache. I start getting thousands of hard faults/second when when it gets to 99%, but I usually have less than 3/second. I'm running windows server 2016, which is pretty similar to win 10 for things like this. I can't find any way to modify the behavior of the write cache. Am I missing something? Thanks for your help, edit: hard faults, not segfaults

Hi LTT community, My computer has run out of pcie slots. I would like to add usb 3.1 or esata for some external storage. The only pcie slot I have to work with has an nvme hard drive in it. The other slots are taken by GPUs. Do you know of any dual purpose pcie cards with usb 3.1 or esata and nvme? I've done the usual searches on Amazon and Newegg. Thanks for any answers, even if they aren't what I'm hoping for.

I dug deeper and found out that nvidia released a patch to "force enable 3.0" for certain motherboards, and it it worked for me. https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/z620-workstation-pci-e-16x-Ver-2-o-3/td-p/6050619 http://nvidia.custhelp.com/app/answers/detail/a_id/3135/~/geforce-gen3-support-on-x79-platform In summary: pcie gen 3 was listed as supported for my old HP z620 workstation, but my 1080ti was only running at 2.0 based on GPU-Z. Installing a patch from nvidia worked for me. However, when I tested x16 3.0 vs x16 2.0 using TensorFlow, there was no difference in compute time.

I'm marking it as solved, thank you. Are you quite certain though, given what ARK says for the e5-2680 v1?

I have a GT 1030 low profile from MSI. It is a rare one that has displayport, not just hdmi. So if you plan on getting a better monitor in the future, I'd go with that one. Not sure how it would perform on games, but if it is your only option, it isn't a bad one. Link to the MSI GT 1030 with displayport https://www.newegg.com/Product/Product.aspx?Item=N82E16814137139

Thank you! That's great to know. It makes sense, but are you sure? Because the Intel ARK seems to suggest that this e5 gen 1 should support pcie 3.0 https://ark.intel.com/products/64583/Intel-Xeon-Processor-E5-2680-20M-Cache-2_70-GHz-8_00-GTs-Intel-QPI I gather, however, that only some z620s support e5 V2. My bios block date is older, so I can't even upgrade to an e5-V2. https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Z620-upgrade-to-E5-2640-V2-CPU/td-p/5053539 At least I can rest easy now knowing my computer is running at top speed--even if it could be better. Thanks a million. MB

Hi LTT community, I need your expertise: I have a 1080ti that I put into an old HP z620 workstation that I bought off ebay for very little. It is a great rig. I use this computer for CUDA computing with neural networks. I don't get to game on it enough. Problem: GPU-Z reports that the card is operating at pcie 2.0 x16 at max when under load. Before you say that it doesn't matter (and it wouldn't for gaming), I think it probably matters for my application where many arrays are being sent from the CPU memory to GPU. (These are arrays that can't be created on the GPU, so no, better code won't solve it). I benchmarked it on UserBenchmark. The 1080ti comes in as underperforming at the 38th percentile (could be worse). I can't figure out how to get it running at pcie 3.0 x16. The datasheet from HP suggests that the mobo supports two slots with pcie 3.0 x16. I have the card in the primary slot. I took out all other pcie devices to be sure they weren't using too many lanes--still no dice. I'm at a total loss. Have googled and googled, but couldn't find anything. That's why, as a long time lurker, I'm asking you for help. Thank you, thank you, in advance! MB Specs HP z620 Windows Server 2016 with GUI (everything is quite similar to Windows 10). Xeon e5-2680 8 x 8 GB Hynix DDR4, fully loaded EVGA GTX 1080ti SC2 6 sata hard drives (are these using up lanes?) Also had a GT 1030 and a NVME Samsung SSD, but I removed both to free up lanes.