The new Development version of BOINC 8.0.0 allows for AVX-512 detection. Do the current AVX applications support AVX-512 processing ?
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Bill F
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No they wouldn't. Any new avx512 app would have to be compiled to use that codepath. Then the admins would have to publish the app with a new avx512 plan_class so the scheduler could parse the available host cpuids for the avx512 compatibility and then it could issue a task for the host using the avx512 app.
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I think we don't even have avx 512 code path.
https://bitbucket.org/francesco-asnicar/pc-boinc/src/master/src/Makefile
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valtercProject administrator
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The SIMD optimizations were made by a volunteer many years ago, by adding specific ASM code for SSE2, AVX and FMA. If I remember correctly, at that time, the benefits of using FMA instructions were minimal. I don't know if our algorithm will really make good use of AVX512...
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I briefly looked at the code and here's some preliminary support for AVX512
https://bitbucket.org/ahorek/pc-boinc/commits/019d2c88579d14cc9cb76d756915c38fcf9857ee
however, the current code barely utilizes any AVX/FMA, so it won't be any faster without more work
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