RX888MK2...runs on J5040 CPU...

[Bas ON5HB]

You can run the system on the J5040 CPU....but, only 20MSPS / 10MHz....

CPU needs to be set at 2.6GHz / Performance.

OpenCL installed from the Intel pages described in the forum.

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[input]
sps=10000000 # Input Sample Rate
fft_size=1048576 # FFT bins
fft_threads=3
brightness_offset=0 # Waterfall brightness offset. Reduce to negative if you see black regions in the waterfall
frequency=0 # Baseband frequency
signal="real" # real or iq
accelerator="none" # Accelerator: none, cuda, opencl
audio_sps=12000 # Audio Sample Rate
audio_compression="flac" # flac or opus
waterfall_size=2048
waterfall_compression="zstd" # zstd or av1
smeter_offset=2

These CPU's don't eat much electricity and are perfect to webcast 70cm in 1 go

OpenCL isn't that good on these CPU's but it works....and 10MHz is pretty cool for such a tiny system.

I use this on my testing server to play with, it's in the list when online.

[Bas ON5HB]

After a lot of experimenting.....I got to 15MHz / 30MSPS....

Turns out that FFT needs just 1 thread!!! And the websdr needs all CPU's -1.

15MHz config on a tine J5040 CPU with OpenCL.

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[server]
port=81 # Server port
html_root="frontend/dist/" # HTML files to be hosted
otherusers=1 # Send where other users are listening, 0 to disable
threads=3

[websdr]
register_online=true # If the SDR should be registered on https://sdr-list.xyz then put it to true
name="Heppen TESTING Websdr" # Name that is shown on https://sdr-list.xyz
antenna="Could be anything" # Antenna that is shown on https://sdr-list.xyz
grid_locator="JO21oc" # 4 or 6 length Grid Locatlr shown on https://sdr-list.xyz and for the Distance of FT8 Signals
hostname="http://websdr.heppen.be" # If you use ddns or something to host with a domain enter it here for https://sdr-list.xyz

[limits]
audio=10
waterfall=10
events=10

[input]
sps=30000000 # Input Sample Rate
fft_size=1048576 # FFT bins
#fft_size=4194304 # FFT bins
fft_threads=1
brightness_offset=0 # Waterfall brightness offset. Reduce to negative if you see black regions in the waterfall
frequency=0 # Baseband frequency
signal="real" # real or iq
accelerator="none" # Accelerator: none, cuda, opencl
audio_sps=12000 # Audio Sample Rate
audio_compression="flac" # flac or opus
waterfall_size=2048
waterfall_compression="zstd" # zstd or av1
smeter_offset=2

[input.driver]
name="stdin" # Driver name
format="s16" # Sample format: u8, s8, u16, s16, u32, s32, f32, f64

[input.defaults]
frequency=648000 # Default frequency to show user
modulation="AM" # Default modulation



[magicint1337]

Would be interesting to see htop usage and intel_top usages

[Bas ON5HB]

Here you go....

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Beware, it's sooooo heavy loaded that even apt install gives problems on audio....it's maxed to the max

[Bas ON5HB]

Funny, OpenCL was turned off, when turned ON it couldn't do 15Mhz....very weird.

Question is WHY OpenCL isn't working as clinfo does list everything.

[Bas ON5HB]

Now it works with OpenCL....

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Turns out the Intel OneAPI doesn't work at all....

[magicint1337]

Can it handle more MHZ with OpenCL?

[Bas ON5HB]

40MSPS now with OpenCL working.....the intel_gpu_top from intel-gpu-tools did the trick and shown if it was actually doing something

Nice....20MHz on the J4050....

[Bas ON5HB]

Code Select Expand

[input]
sps=40000000 # Input Sample Rate
fft_size=1048576 # FFT bins
#fft_size=4194304 # FFT bins
fft_threads=1
brightness_offset=0 # Waterfall brightness offset. Reduce to negative if you see black regions in the waterfall
frequency=0 # Baseband frequency
signal="real" # real or iq
accelerator="opencl" # Accelerator: none, cuda, opencl
audio_sps=12000 # Audio Sample Rate
audio_compression="flac" # flac or opus
waterfall_size=2048
waterfall_compression="zstd" # zstd or av1
smeter_offset=2



[magicint1337]

Pretty good

[Bas ON5HB]

But it can't do much more....it's on it's limits.

[magicint1337]

The HD530 of the i5 6500t for example is double the performance of the GPU in the J5040 so 20mhz is very good.

[magicint1337]

how does cpu and gpu look now, can you post images again now after opencl?

[Bas ON5HB]

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[magicint1337]

Seems pretty good, i will in the future try to run it on the orangepi 5.

It should be stronger than the J5040 in both CPU and GPU and still will only consume about 8-10watts probably.

If i get it i will post results! Maybe a competitor for kiwi?