I'm currently profiling some DSP code that I try to optimize for Raspberry Pi 4.
The most interesting thing related to Raspberry PI 4 is that SIMD-optimized code gets nearly the same performance as same scalar code.
Currently looking with the perf tool, I see the bottleneck related to the... memory???
Here's a screenshot:
Raspberry PI 4: CPU too powerful/memory too slow?
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- sadko4u
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Raspberry PI 4: CPU too powerful/memory too slow?
Last edited by sadko4u on Mon Dec 09, 2019 1:21 pm, edited 1 time in total.
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- sadko4u
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Re: Raspberry PI 4: CPU too powerful?
As the opposite situation, here's the same code for Raspberry Pi 3B+
As we see here, there are less losses on load/store instructions than for Raspberry Pi 4B
As we see here, there are less losses on load/store instructions than for Raspberry Pi 4B
LSP (Linux Studio Plugins) Developer and Maintainer.