numactl on armv7h

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numactl on armv7h

Postby acconciox » Thu Nov 10, 2016 3:40 pm

HI, im a fan of chess engines, and im talking about cfish is fork of stockfish a very famous open source chess engine written in C++, cfish is a fork written in C by Ronald De Man, the syzygy author.
On raspberry pi 3 b the compile is possible i dont know if it's correct or the faster way but i did it this way changing Makefile.

make build ARCH=armv7

here are changes:

Code: Select all
compiled cfish with this difference:
diff Makefile Makefileoriginale
< popcnt = no # yes
< sse = no # yes
> popcnt = yes
> sse = yes
< numa = no # yes
> numa = yes
<    CFLAGS += -pedantic -Wextra -Wshadow # raspi -m$(bits)
>    CFLAGS += -pedantic -Wextra -Wshadow -m$(bits)
<          # CFLAGS += -fno-gcse -mthumb -march=armv7-a -mfloat-abi=softfp
<          CXXFLAGS += -fno-gcse -march=armv8-a+crc -mtune=cortex-a53 -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -ftree-vectorize -funsafe-math-optimizations -mvectorize-with-neon-quad --pipe -O2
<          LDFLAGS += -lpthread # line to add
>          CFLAGS += -fno-gcse -mthumb -march=armv7-a -mfloat-abi=softfp
<    $(MAKE) ARCH=$(ARCH) COMP=$(COMP) # raspi config-sanity
>    $(MAKE) ARCH=$(ARCH) COMP=$(COMP) config-sanity

as you can see i flagged no numa.
numa would speed up a lot the analyze, so, the question is, there is a way to install and make it available numa on armv7h raspberry pi 3 b?
Posts: 98
Joined: Thu May 05, 2016 4:39 pm

Re: numactl on armv7h

Postby WarheadsSE » Fri Nov 11, 2016 12:32 am

NUMA is a CPU feature, IIRC
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