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Environment Variable to override config at runtime #785

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SJ-Innovation opened this issue Jan 23, 2025 · 2 comments · May be fixed by #786
Open

Environment Variable to override config at runtime #785

SJ-Innovation opened this issue Jan 23, 2025 · 2 comments · May be fixed by #786

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@SJ-Innovation
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SJ-Innovation commented Jan 23, 2025 •
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In the cases of broken kernels its useful to define VOLK_GENERIC=1 environment variable to globally use the reference implementation as a workaround. In situations where a single kernel is broken doing this kills performance for the rest of GNURadio. I propose a more granular environment variable set derived from the names of the kernels themselves to specify / override the config file.

I'll make a PR for my own purposes, with the hope that this can be merged for others to benefit from.
@marcusmueller
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What exists: VOLK_CONFIGPATH; e.g.,

mkdir -p /etc/volk
echo 'volk_64u_popcnt u_zuse_z2_simd_extensions  u_zuse_z2_simd_extensions' > /etc/volk/volk_config
export VOLK_CONFIG_PATH=/etc
# volk uses /etc/volk/volk_config from here on.

@SJ-Innovation
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Am aware of this, though have multiple concurrent operations running so would rather not be changing global configurations all the time.

@SJ-Innovation SJ-Innovation linked a pull request Jan 23, 2025 that will close this issue
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Feature: Add Environment Variable Kernel Override SJ-Innovation/volk
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@marcusmueller @SJ-Innovation