ronnie.sengupta

Once I enable Cuda - I don't have a problem with running this filter - I guess it's better leave the reserved core settings the way it is. I was just curious as to why it was behaving differently. Thank you for the explanation.

everything is at 44.1 if I try 48X512 - 100% CPU for over a minute, I had to kill HQP. I am not sure if T+A Dac 8 dsd supports 48Khz base rate. I'll try and find out. Update: The Dac supports 44.1 and 48Khz base clocks. I tried 96Khz PCM and it worked fine oversampling to 48X512

I realized that when I did my tests earlier, I had the multicore setting set to Checked which resulted in stuttering on my i7-9700k with redbook to ASDM7EC and xtr filters at dsd 256. With Multicore set to "greyed out" I get no stutter and the CPU stays at 55 to 70% with no overclocking, running at clock speeds of around 4600 Mhz. The same settings were running at close to 100% on my i7-7700k overclocked, running at clock speed for 4700Mhz to 5000 Mhz (no stuttering) I ran some additional tests on my PC (i7-9700k + RTX 2080 ti) with and without Cuda, all three settings for Multicore, EC / Non EC modulators and xtr / ext2 filters. @LoryWiv XTR filters seem to benefit quite a bit from the Cuda offload as can be seen in row 11 and 12 above for ASDMEC and Row 1 and 3 for ASDSM7 @Miska I ran the ASDSM7/xtr/512 tests on my registered HQP 3 version it works without stutter at 85-95% CPU. Same test on HQP 4.2.3 stutters and uses ~74% CPU. Without Cude and Multicore greyed out. HQP 3.25.6 HQP 4.2.3

Thank you Jussi for the results. I got really impatient over the weekend and upgraded CPU to i7 9700k - that didn't help at all. So, this morning I ordered 2080 ti, just installed and ran poly-sinc-xtr-lp from 44.1k to DSD at 44.1k x512 Success! Its running CPU at 28% and GPU at 48% - very similar to your results. I could have done without the CPU upgrade the GPU made all the difference.

Thanks @Hammer. The cpu upgraded didn't help at all. So was a bit nervous before ordering the 2080. Couldn't decide if I should get the super or ti. I guess at 60% gpu on 2080 super, the TI will be an overkill, given the considerably higher price.

Jussi had posted earlier that HQP recognises HT and as such it should not make a difference. @Hammer are you able to play asdm7 non ec with dad 512 with xtr with your 2080 super?

I just upgraded the CPU to i7 9700k with z390 board and 3200 c16 ram. To my surprise it is stuttering on dsd256 asdm7ec xtr and using about 90% CPU overclocked at 4900mhz. The pc was only detecting one of the ram modules. So I opened it up to check on the second ram module. Disaster struck! My 4 year old managed to spill a little bit of hot chocolate on the motherbard while I was working on it. Now its not booting up I should have just stuck to my i7 7700k!

90 to 95% CPU without Cuda. With Cuda it comes down to around 50 to 60% on both GPU and CPU

I too get stuttering when I turn Hyper threading on. With HT turned off, I can get the above settings to work with and without Cuda on my i7 7700k.

On my Intel i7 7700k without Cuda - running XTR ASDM7 512 from redbook - I noticed that if I turn on Multicore DSP in settings, the CPU hits close to 100% on all 4 cores (I have Hyper threading turned off). If I disable Multicore DSP the CPU utilization comes down to around 58%. With Multicore enabled and Cuda enabled the CPU utilization comes down to 48% with GPU at 80 to 85% The audio stutters in all three cases.

Direct SDM Enabled. I managed to solve the problem. I had Matrix Pipeline enabled to swap Left-Right channels. Disabling that fixed it. The T+A Firmware I installed for Linux flips channels for DSD. @miska any thoughts on which way to go - CPU or GPU upgrade for 512 xtr.

I tried Hqplayer pro to generate DSF files upsampling redbook to dsd512 xtr asdm7 512. Strangely, the dsf file when played Direct DSD also stutters.

Thank you. I really appreciate it. If I have to upgrade, I would rather upgrade my Processor/Motherboard than the GPU as the my Noctua HD15 with dual fan keeps the CPU very cool and runs pretty quiet as compared to a GPU running at something like a 70% load. But, if upgrading the GPU is a safer bet to get xtr @ dsd512 to work, I don't mind changing the GPU to a 2080 super or a TI

Conversion from 44.1k to 22.5792 (I have auto-rate family checked).

When I am converting from redbook to DSD512 with Poly-sinc xtr. The CPU stays at ~45% and the GPU is at ~80%. If I turn off Cuda, the CPU goes up to 95%. These settings result in constant stuttering. If I switch to xtr2 filters, then CPU usage is around 35% and 8% GPU - no dropouts.