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Feature #10081

[PATCH] Specifying MACRO for increase performence in ppc64

Added by Gustavo Frederico Temple Pedrosaabout 2 years ago. Updated about 2 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
[ruby-core:63937]

Description

To increase performance on ppc64 machines, the MACRO "powerpc64" were specified for the architecture, just like for x86_64 machines.

I've executed some benchmarks, see below:

Benchmark Before (milliseconds) After (milliseconds) Percentage difference bm_vm2_regexp.rb 4955 4752 -4,10% bm_so_meteor_contest.rb 6065 5817 -4,09% bm_app_pentomino.rb 35122 34886 -0,67% bm_hash_flatten.rb 3055 3011 -1,44% bm_so_sieve.rb 1227 1210 -1,39%

macro_powerpc64.patchView(1.16 KB)Gustavo Frederico Temple Pedrosa, 07/22/2014 06:40 PM

Associated revisions

Revision 46915
Added by Nobuyoshi Nakadaabout 2 years ago

UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

Revision 46915
Added by Nobuyoshi Nakadaabout 2 years ago

UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

Revision 46915
Added by Nobuyoshi Nakadaabout 2 years ago

UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

History

#1[ruby-core:63942] Updated by Nobuyoshi Nakadaabout 2 years ago

PowerPC64 can unaligned access?

#2[ruby-core:63972] Updated by Gustavo Frederico Temple Pedrosaabout 2 years ago

Nobuyoshi Nakada wrote:

PowerPC64 can unaligned access?

Yes, I have tested in my IBM POWER 7+ (rev 2.1)

#3[ruby-core:63976] Updated by Nobuyoshi Nakadaabout 2 years ago

Thank you.
Possibly, can PACKED_STRUCT_UNALIGNED also work on PowerPC64?

#4[ruby-core:63981] Updated by Nobuyoshi Nakadaabout 2 years ago

  • Status changed from Open to Closed
  • % Done changed from 0 to 100

Applied in changeset r46915.

UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

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