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radix 5 works, but is 6x slower than fftw

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This commit is contained in:
Mark Borgerding
2003-11-03 03:03:16 +00:00
parent 85764e6437
commit 3c0c0431e2
5 changed files with 51 additions and 152 deletions
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55
tools/Makefile
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@ -1,23 +1,17 @@
ifeq "$(NFFT)" ""
NFFT=1024
NFFT=1800
endif
ifeq "$(NUMFFTS)" ""
NUMFFTS=10000
endif
UTILSRC=../kiss_fft.c fftutil.c
CFLAGS=-Wall -O3 -lm -I.. -ansi -pedantic
ifeq "$(DATATYPE)" ""
DATATYPE=float
DATATYPE=float
endif
UTIL=fftutil_$(DATATYPE)
BENCH=bm_$(DATATYPE)
all: $(UTIL)
all: $(UTIL) $(BENCH)
ifeq "$(DATATYPE)" "short"
TYPEFLAGS=-DFIXED_POINT -Dkiss_fft_scalar=short
@ -25,31 +19,29 @@ else
TYPEFLAGS=-Dkiss_fft_scalar=$(DATATYPE)
endif
$(UTIL): $(UTILSRC)
gcc -o $@ $(CFLAGS) $(TYPEFLAGS) $(UTILSRC)
CFLAGS=-Wall -O3 -ansi -pedantic
$(UTIL): ../kiss_fft.c fftutil.c
gcc -o $@ $(CFLAGS) -I.. $(TYPEFLAGS) ../kiss_fft.c fftutil.c -lm
RANDDAT=rand_$(DATATYPE)_$(NFFT).dat
$(RANDDAT):
./rand_fft_data.py -n 1 -N $(NFFT) -t $(DATATYPE) > $(RANDDAT)
$(BENCH): benchkiss.c ../kiss_fft.c
gcc -o $@ $(CFLAGS) -I.. benchkiss.c $(TYPEFLAGS) ../kiss_fft.c -lm
time: all $(RANDDAT)
@echo
@echo -n "#### timing $(NUMFFTS) x $(NFFT) point FFTs. "; factor $(NFFT)
@if [ -x ~/fftw/st ] && [ $(DATATYPE) == "double" ]; then \
echo "#### FFTW FFT $(DATATYPE)"; \
time ~/fftw/st -x $(NUMFFTS) -n $(NFFT) < $(RANDDAT) > /dev/null;\
fi
@echo "#### KISS FFT $(DATATYPE)"
@time ./$(UTIL) -x $(NUMFFTS) -n $(NFFT) < $(RANDDAT) > /dev/null
@rm $(RANDDAT)
fftw: bm_fftw
./bm_fftw -x $(NUMFFTS) -n $(NFFT)
bm_fftw: benchfftw.c
gcc -o $@ $(CFLAGS) benchfftw.c -lm -lfftw3 -L /usr/local/lib/
time: all
./$(BENCH) -x $(NUMFFTS) -n $(NFFT)
POW2=256 512 1024 2048
POW3=243 729 2187
POW5=25 125 625
POW5=25 125 625
mtime: all
@for n in $(POW5) ;do \
export NFFT=$$n;make time; \
done
@for n in $(POW2) $(POW3) $(POW5) ;do \
./$(BENCH) -x $(NUMFFTS) -n $$n;\
done
snr: all
@which octave
@ -61,5 +53,4 @@ snr: all
test: snr time
clean:
rm -f *.dat *~ fftutil_*
rm -f *~ fftutil_* bm_*