Compilation Error

[Juliya32]

Hi ,
1)How can we compile the fftw test codes(/home/...../FFTW_SVE/fftw-3.3.10/tests/fftw-bench.c) in the arm directory with sve for
benchmarking.

  2) How to resolve this issue
      /opt/arm/armgcc/binutils_bin/ld: /tmp/ccTAlgm6.o: in function `done':
    /home/../fftw-3.3.10/tests/fftw-bench.c:283: undefined reference to `uninstall_hook'
    /opt/arm/armgcc/binutils_bin/ld: /tmp/ccTAlgm6.o: in function `cleanup':
   /home/../fftw-3.3.10/tests/fftw-bench.c:288: undefined reference to `initial_cleanup'
   undefined reference to `verbose'
    undefined reference to `timer_start'
    undefined reference to `bench_assertion_failed'
   
  3)Can you suggest any other codes for fftw benchmarking with sve.
  
  4)I tried with 1dimensional fftw code.but  while checking its assembly code sve registers and neon registers are not found.why?

[stevengj]

What compile commands are you using? Are you using ./configure && make? With what options?

[Juliya32]

Hi
This is my configuration command
1)./configure --prefix=/home/../FFTW_SVE/fftw-3.3.10/build/ --enable-sve --enable-neon --enable-fma --enable-armv8-cntvct-e10 --enable-threads --enable-shared --enable-single CC=gcc CFLAGS="-O3 -gdwarf-4 -mtune=native -march=armv8.2-a+sve -msve-vector-bits=512" CXXFLAGS="-Ofast -march=armv8.2-a+sve -sve-vector-bits=512" FC=gfortran FFLAGS="-g -O3 -march=armv8.2-a+sve -msve-vector-bits=512"
2)make
3)make install
gcc --version 12.2.0

[rdolbeau]

If you're using one of my release for SVE, then the 'bench' binary in tests/ should be built by default, as for other fftw3 version.

It can be used for testing (in tests/ simply do "make check" or "make bigcheck" or ...) and benchmarking using the -s option, such as "./bench -omeasure -v2 -s ocf2048" which will test an (o)ut-of-place, (c)omplex, (f)forward 2048 pts FFT.