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Geeks3D's GPU Tools / Re: Furmark 1.20.1.0: weird CPU load
« Last post by pegnose on June 23, 2018, 09:20:15 PM »
Thanks for the info. I think now that everything is fine with my render PCs.

Nevertheless, just out of curiosity, I would be interested in whether you can also 'force' Furmark to reduce its CPU load via concurrent load from CPU burner without any substantial FPS loss.

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Geeks3D's GPU Tools / Furmark 1.20 crash on windows 2012 R2
« Last post by gtherrien on June 22, 2018, 09:35:42 PM »
Hi,

the system have Windows 2012 R2 on a dual socket system.
1 1080TI  is installed with CPU 1 and 1 1080TI is installed with CPU 2.

if the benchmark is running on:
                                     GPU1 on CPU1, no issue
                                     GPU1 on CPU2, furmark crash after 20 minutes.
if the GPU1 on CPU 1 is removed, the GPU1 on CPU 2 has no issue.

Regards
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GeeXLab - english forum / Rings of Cubes
« Last post by JeGX on June 22, 2018, 07:36:43 PM »
Here is demo that shows how to use the power of hierarchy to group objects in order to create complex animations...

Article + demo:
https://www.geeks3d.com/hacklab/20180622/demo-rings-of-cubes/

GeeXLab downloads
https://www.geeks3d.com/geexlab/downloads/






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Geeks3D's GPU Tools / Re: Furmark 1.20.1.0: weird CPU load
« Last post by JeGX on June 22, 2018, 07:33:51 PM »
Yes the 15% load is constant and is equivalent to your 30%.
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Geeks3D's GPU Tools / Re: Furmark 1.20.1.0: weird CPU load
« Last post by pegnose on June 22, 2018, 03:09:39 PM »
Thanks.

So 15% with Hyperthreading would mean 30% without, if I understand the slightly misleading CPU load info under Windows correctly. That could mean that you see the same 30% load I often see. I assume this 15% load is constant right from the start?
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Geeks3D's GPU Tools / Re: Furmark 1.20.1.0: weird CPU load
« Last post by JeGX on June 22, 2018, 02:53:43 PM »
For your information, here is the CPU usage with FurMark running at 1024x768: around 15% on 8 logical cores.
When the affinity mask is set to 0 (default value in FurMark 1.20.1), the CPU load is spread on all cores.



Hope that helps.
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Geeks3D's GPU Tools / Re: Furmark 1.20.1.0: weird CPU load
« Last post by pegnose on June 22, 2018, 09:59:35 AM »
JeGX, thank you for the reply.

I can now say that I observed this phenomenon on two quite different PCs with Furmark Versions 1.20 and 1.19. And yes, the download size is around 10 MB.

One is a barebone mini PC with an i5 7500T quad-core (no HT) and a GTX1060 in MXM (?) format, and one is a regular desktop with a i5 4460 quad-core (no HT either) and a GTX980Ti.

Both PCs have 4 threads and neither 60 nor 30% of CPU load do seam to correspond to a particular thread count (or 2.5% for that matter).

What is the CPU load created by Furmark you get? And does it vary as much depending on concurrent load as on my PCs? I want to make sure that nothing is wrong with my VR setups, because I cannot monitor system performance as closely during their actual application.
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Quote
In this paper, we propose a ratio estimator of the direct-illumination equation that allows us to combine analytic illumination techniques with stochastic raytraced shadows while maintaining correctness. Our main contribution is to show that the shadowed illumination can be split into the product of the unshadowed illumination and the illumination-weighted shadow. These terms can be computed separately — possibly using different techniques — without affecting the exactness of the final result given by their product.

This formulation broadens the utility of analytic illumination techniques to raytracing applications, where they were hitherto avoided because they did not incorporate shadows. We use such methods to obtain sharp and noise-free shading in the unshadowed-illumination image and we compute the weighted-shadow image with stochastic raytracing. The advantage of restricting stochastic evaluation to the weighted-shadow image is that the final result exhibits noise only in the shadows. Furthermore, we denoise shadows separately from illumination so that even aggressive denoising only overblurs shadows, while high-frequency shading details (textures, normal maps, etc.) are preserved.

Link: http://casual-effects.com/research/Heitz2018Shadow/index.html
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3D-Tech News Around The Web / Vulkan SDK 1.1.77 released
« Last post by JeGX on June 21, 2018, 08:36:31 PM »
Quote
Overview of changes and additions to Vulkan SDK 1.1.77

- Linux SDK is now packaged as a tar.gz file instead of a .run file. Previously the run file created a VulkanSDK directory and then expanded the SDK into the VulkanSDK/1.1.xx.y directory. The tar file now simply expands the SDK into a directory of the form 1.1.xx.y.

- Many bug fixes, increased validation coverage and accuracy improvements, and feature additions

- New extensions for this SDK release:
    VK_KHR_get_display_properties2
    VK_KHR_draw_indirect_count

Links:
- https://www.lunarg.com/lunarg-releases-new-vulkan-1-1-77-sdk/
- https://vulkan.lunarg.com/
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Geeks3D's GPU Tools / Re: Furmark 1.20.1.0: weird CPU load
« Last post by JeGX on June 21, 2018, 08:33:18 PM »
I hope you have downloaded FurMark from Geeks3D.com server (the official FurMark installer size is around 10MB). I know that some suspect russian sites distribute some fraudulent versions of FurMark bundled with cpu-miner (around 280MB)...

Have a look at the release notes:
https://www.geeks3d.com/20180123/furmark-1-20-0-gpu-stress-test-download/

Maybe you will find the solution to your CPU issue (the thread affinity mask).

FurMark does nothing in the background, it's just a render thread that sends 3D instructions to the GPU to burn it!
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