The Maelstrom demo represents a section of the rendering pipeline that highlights the performance capabilities of storage by demonstrating its ability to effectively use the swap file as a form of extended memory. The test does not write out the result data or process the points in order to isolate the wall-time effect of the latency impact to the underlying storage component. Output of the benchmark is measured in seconds to complete, with fewer being better. In this case, we installed Ubuntu Desktop (ubuntu-16.04.3-desktop-amd64) running bare metal. The test bed for this application is a variant of the core Dell PowerEdge R740xd server type we use in the lab with dual Intel 6130 CPUs and 64GB DRAM. The Houdini test is specifically designed to evaluate storage performance as it relates to CGI rendering. We do this because many of the common consumer benchmarks don’t adequately capture end-user workload profiles. A large focus is put on drive latency across the entire load range of the drive, not just at the smallest QD1 (Queue-Depth 1) levels. The methodology used better reflects end-user workflow with the consistency, scalability and flexibility testing within virtualized server offers. NVMe is tested natively through an M.2 to PCIe adapter card. We measure SATA performance through a Dell H730P RAID card inside this server, although we set the card in HBA mode only to disable the impact of RAID card cache. The test platform leveraged in these tests is a Dell PowerEdge R740xd server.
#Aura sequential testing free
It also features built-in SLC caching, which helps to further increase the performance of TLC SSDs and uses 7% over-provisioning (overall capacity as free space) to help promote a more stable and dependable experience for storing data.īacked by a 5-year warranty, the OWC comes in capacities of 240GB, 480GB, 1TB, 2TB, and 4TB. The OWC drive also features the Phison E12, a high-performance, 8-channel NVMe controller that was first announced roughly 2 years ago.Īs such, the OWC Aura P12 is quoted to deliver sequential speeds up to 3,400MB/s in reads and 3,000MB/s in writes, while random performance is expected to hit reads and writes up to 600,000 IOPS. Packed inside the M.2 2280 form factor, the OWC Aura P12 comes in a range of capacities from 240GB to 4TB and uses 3D TLC NAND. OWC indicates that their new drive is ideal for consumers looking to improve their gaming and overall system performance, as well as professionals who want to increase previewing, rendering, and processing in audio and visual effect software. If \(T+C\) reaches \(N\), stop the test.The OWC Aura P12 is an NVMe SSD that leverages the PCIe 3.1 x4 interface. If \(T-C\) reaches \(2\sqrt\), stop the test. Track the number of incoming successes from the control group. Track the number of incoming successes from the treatment group. The sequential procedure works like this:Īt the beginning of the experiment, choose a sample size \(N\).Īssign subjects randomly to the treatment and control, with 50% probability each.
#Aura sequential testing trial
Sequential sampling allows the experimenter to stop the trial early if the treatment appears to be a winner it therefore addresses the “peeking” problem associated with eager experimenters who use (abuse) traditional fixed-sample methods. In this post, I will describe a simple procedure for analyzing data in a continuous fashion via sequential sampling. Stopping an A/B test early because the results are statistically significant is usually a bad idea.
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