mbox series

[20.11,0/7] acl: introduce AVX512 classify method

Message ID 20200807162829.11690-1-konstantin.ananyev@intel.com (mailing list archive)
Headers
Series acl: introduce AVX512 classify method |

Message

Ananyev, Konstantin Aug. 7, 2020, 4:28 p.m. UTC 
  These patch series introduce support of AVX512 specific classify
implementation for ACL library.
Inside it contains two code-paths –
one uses mostly 256 bit instruction/registers and can
process up to 16 flows in parallel.
second uses 512 bit instruction/registers over majority of
places and can process up to 32 flows in parallel.
These internal code-path selection is done internally based
on input burst size and is totally opaque to the user.
On my SKX box test-acl shows ~20-65% improvement
(depending on rule-set and input burst size) 
when switching from AVX2 to AVX512 classify algorithms.

Note that this change introduce a formal ABI incompatibility
with previous versions of ACL library.

TODO list:
- Deduplicate 8/16 code paths
- Update default algorithm selection
- Update docs

These patch series depends on:
https://patches.dpdk.org/patch/70429/
to be applied first.  

Konstantin Ananyev (7):
  acl: fix x86 build when compiler doesn't support AVX2
  app/acl: few small improvements
  acl: remove of unused enum value
  acl: add infrastructure to support AVX512 classify
  app/acl: add AVX512 classify support
  acl: introduce AVX512 classify implementation
  acl: enhance AVX512 classify implementation

 app/test-acl/main.c                |  19 +-
 config/x86/meson.build             |   3 +-
 lib/librte_acl/Makefile            |  26 ++
 lib/librte_acl/acl.h               |   4 +
 lib/librte_acl/acl_run_avx512.c    | 140 +++++++
 lib/librte_acl/acl_run_avx512x16.h | 635 +++++++++++++++++++++++++++++
 lib/librte_acl/acl_run_avx512x8.h  | 614 ++++++++++++++++++++++++++++
 lib/librte_acl/meson.build         |  39 ++
 lib/librte_acl/rte_acl.c           |  19 +-
 lib/librte_acl/rte_acl.h           |   2 +-
 10 files changed, 1493 insertions(+), 8 deletions(-)
 create mode 100644 lib/librte_acl/acl_run_avx512.c
 create mode 100644 lib/librte_acl/acl_run_avx512x16.h
 create mode 100644 lib/librte_acl/acl_run_avx512x8.h