OpusOne

This is mainly a question for Miska, but others who might have similar experience please chime in. My main system has a 6-core i7-5930k 3.5GHz CPU with dual NVIDIA GForce GTX 770 GPU (with the latest drivers) with 16G RAM.. Without CUDA offloading, my system can reliably upconvert to DSD512 without any issues; however, whenever i enabled CUDA offloading, it starts to stutter very badly. Here are some different scenarions with poly-sync and DSD7 filters. 1. No CUDA offloading, upconvert to DSD512, average CPU loading is 23.2%, no stuttering. 2. With CUDA offloading, upconvert to DSD512, average CPU loading is 16%, SEVERE stuttering. 3. No CUDA offloading, upconvert to DSD256, average CPU loading is 11.0% no stuttering. 4. With CUDA offloading, upconvert to DSD256, average CPU loading is 11.7% , no stuttering. Having CUDA in this case has a negative impact for my set up even though it appears to have lightened the CPU loading. Is there anything wrong with my configuration? Thanks for your assistance and feedback in advance.

Bogi, I have been successful implementing your sendtohqp solution, thanks for all the work in developing the process. However, I have never been able to get the shortcut to work. If i bring up a terminal and invoke sendtohqp with command line, everything works like a charm. But the shortcut ends up doing nothing. Not sure how to even debug this issue. Any ideas what has gone wrong?

Thanks for the response. The DAC that I am using is iFi DSD micro. I have switched over to running NAA on windows 7 with the latest networkaudiod downloaded from the signalyst website. I ran it for a good 4 hours without a hitch, streaming DSD512. Makes me think there is still issue between ALSA and the iFi DSD micro firmware. Granted, I am not sure if i have the latest ALSA/libsound on my linux system. The ASIO driver supplied by iFi on the windows side might be more optimized.

Hi all, I have been running HQP to NAA via Ethernet through a Netgear nighthawk router somewhat successfully. pcm files upsampled to DSD512 (22579200) can stream smoothly to the NAA (on a Ubuntu studio system). There is no stuttering at all. However, I keep getting a fatal error that causes the NAA to disconnect. The error message in the log is "push to queue timed out". Has anyone seen this? Is it a router/switch issue? Need some help here, thanks.

I don't see Brushfire Fairytales (my fav) offered on HDtracks Can you share where you purchased it? Thanks!

Thats great news for a lot of people. I would very much like to hear from Jussi on what optimization he introduced in the latest release that could result in such a significant reduction in CPU workload. Thanks!!!

Bogi, Thanks for being an excellent help as usual. I can't remember now if this flow can handle DST compressed iso. Will iso2dsf get stuck or just ignore and skip it?

Ted, Is there a batch script that would perform iso2dsf on every iso files in the same directory (or input from a list) that I could use? I am so bad at scripting, and I am lazy LOL. Would be nice if the script can detect if the iso contains DST compression and issue the right SACD extraction command. Any help is appreciated. I have a few hundred ISO's that I need to reprocess now.

Thanks for the tips. I totally forgot about MP3TAG. It worked beautifully. Foobar2000 still would not let me edit genre and composer for some reasons on those dsf files.

Bogi and Ted, Thanks for the excellent work and documentation again, makes installation a breeze. I am mainly using foobar2000 as a library management too and HQP as the player. The DSF files that I have created from ISO have a few missing metadata or tags sometimes. And foobar2000 tagging function seems to be UNABLE to edit the tags. Can you guys confirm this? I could not even edit the composer and genre tags. If thats indeed the case, is tag&rename the only option on windows? Or should i edit the metadata tags with Yates on my MAC machine? Thanks in advance for any feedback.

Jussi, Sorry to hijack this, I have sent you private emails about license purchase. Can you please take a look and feedback. Thanks.

It really depends on what you want to do and what your DAC is capable of. You mac mini will limit what you can do with HQP, i.e. only up to DSD256 at best and even then not being able to use some of the more demanding filters. If you are OK with it, then yes. And you would not know what those filters would truly sound like unless you have a work horse that could run with those filters at higher up sampling rates without being stressed. Miska has mentioned quite a bit, the more cores you have running at higher operating frequency (constant and not the temporary Turbo boost frequency), the better it will be.

Hmmm, do you have a good explanation for that? Is the network bandwidth limited previously? I know I could not do DSD512 over wifi between my HQP work horse system and the NAA for sure.

So the question is should I install the Trusty packages over the Jessie packages that I have working now. Based on your description, it should be quite safe, but what are the advantages?

Thanks Miska. I think my Ubuntu Studio is a 14.04 Trusty release. Sorry for being a unix newbie. Can I install the libasound2-data_1.0.27.2-3.1jl2_all.deb and libasound2_1.0.27.2-3.1jl2_amd64.deb from /src/trusty over what I have from Debian Jessie directory? Or do i have to uninstall what I have first and then install the trusty ones? What is the difference or advantage? The ALSA driver actually shows all the DSD frequencies (both 44.1k and 48k based frequencies) available for HQP when I run HQP on Ubuntu, or through Ubuntu NAA daemon into the iFi IDSD micro DAC. On the other hand, when i run HQP on my windows 8 system, I could not see the 48k frequency multiples DSD upsampling output option. Does this have to do with the iFi iDSD ASIO driver on windows? Or is it a HQP windows option limitation? Thanks.