Mineeva, Tatyana A
2017-06-27 11:18:57 UTC
Hello Julian,
We have implemented a number of AVX-512 instructions in Valgrind core.
NAS IS benchmark, compiled with AVX-512, runs correctly under Nulgrind. Tests for the implemented AVX-512 instructions (similar to the tests in ./none/tests/amd64/avx2-1.c) also work correctly.
For now, neither the test nor the benchmark works under Memcheck, because a lot of new IRs are introduced. And a number of AVX-512 instructions is not implemented yet.
1. What has higher priority, Memcheck correctness or full instruction set coverage?
2. When should we start submitting patches: when everything is added and tested on more benchmarks, or earlier, in order to review a work-in-progress?
Thank you for any advice.
Regards, Tanya
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We have implemented a number of AVX-512 instructions in Valgrind core.
NAS IS benchmark, compiled with AVX-512, runs correctly under Nulgrind. Tests for the implemented AVX-512 instructions (similar to the tests in ./none/tests/amd64/avx2-1.c) also work correctly.
For now, neither the test nor the benchmark works under Memcheck, because a lot of new IRs are introduced. And a number of AVX-512 instructions is not implemented yet.
1. What has higher priority, Memcheck correctness or full instruction set coverage?
2. When should we start submitting patches: when everything is added and tested on more benchmarks, or earlier, in order to review a work-in-progress?
Thank you for any advice.
Regards, Tanya
--------------------------------------------------------------------
Joint Stock Company Intel A/O
Registered legal address: Krylatsky Hills Business Park,
17 Krylatskaya Str., Bldg 4, Moscow 121614,
Russian Federation
This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.