DS4Windows VS DirectStorage

There's a nice discussion about it on ds4windows GitHub: https://github.com/Jays2Kings/DS4Windows/issues/17 It's possible to do this, but neither ds4windows nor Linux drivers have implemented it. This behavior is very specific to Dualshock 4, and hard to figure out.

NFI about the flashing red, but my PS4 controller stopped working on my PC until I used this app https://github.com/Jays2Kings/DS4Windows/releases

Then I downloaded DS4Windows through Github back then (since the official website seems to be down), now the page says that it's an archive so I don't know if it's still available and working. Link here : https://github.com/Jays2Kings/DS4Windows/releases

Yes use ds4 https://github.com/Jays2Kings/DS4Windows/releases. Or try to make it work with steam.

The issue has to do with the firmware of the controller (sometimes it might get corrupted). So your best bet is to download an open source DS4Windows (it’s open source) and install it. Here is the link to the GitHub repo: https://github.com/Jays2Kings/DS4Windows/releases.

People have been discussing it on the old DS4Win github as recently as last year. It seems like Ryochan just hasn't gotten around to it yet and nobody else is working on it, from what I'm reading.

here's a link to help if you have an NVidia card https://github.com/Jays2Kings/DS4Windows/issues/397

Link: https://github.com/Jays2Kings/DS4Windows/issues/397

I downloaded this version of DS4Windows and installed it by mistake. How do I uninstall this and download the new version ?

I don't think the GPU decompression optimizations is in this driver. I updated and using the Bulk Loader Demo test I'm actually seeing lower throughput than before. I used to hit around 24-25GB a sec, now I'm only hitting like 21GB a sec. Although it's possible but I doubt it, it could be related to the Windows 11 March update reducing SSD bandwidth. I haven't run the test in months so it might be related.

The data is compressed with GDeflate, not deflate. The single stream is designed to use the parallelism of a GPU. It is described here:

https://github.com/microsoft/DirectStorage/blob/main/GDeflat...

The GPU decompression benchmark I linked earlier allows you to specify a single file that it will compress with GDeflate (and zlib for comparison). The numbers presented in the docs that come with the benchmark and presented elsewhere are consistent with my own runs using a source file that is highly compressible.

Part of the trick of achieving this speedup is to read the data fast enough. I don't know of any NVMe drive that can reach full speed with a queue depth of 1. While running the benchmark in a windows VM with a GPU passed through, on the linux host I observed that the average read size was about 512k and the queue depth was sometimes over 30.

We already have GDeflate, with permissive sources available for both CPU compression/decompression and GPU decompression in the DirectStorage GitHub repo. I haven't personally played with it yet, but I'll be implementing it in a project I'm working on in the next few months and am pretty excited to do so.

Wrong: https://github.com/microsoft/DirectStorage/blob/main/Docs/diagrams.mmd

The github repo has some command line parameters.

Only the final test where the results of several SSDs are displayed in the graph is a synthetic one. The first two both support DirectStorage and are designed with Microsoft's recommendations for DirectStorage in mind. That is, random reads of 32k or greater block sizes with high queue depths. This is because you need a high queue depth to be able to saturate NVMe drives.

For most it'll be a background element they're not aware of, if you're running up to date win10 onwards you have DS capabilities, you can get the sample from microsoft build it and run it fine.

Direct Storage github Samples: https://github.com/microsoft/DirectStorage