result-omp-linpack-of_Raspi2
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ABCDE
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Rapberry Pi 2(@1000MHz), Result of 'openMP Linpack'
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omplinpack source:
http://people.inf.ethz.ch/arbenz/book/Chapter4/ompsgefa.tar
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RMS error in solution for N = 1000: err = inf
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gcc,gfortran=4.8.2
CFLAGS = -O4 -fopenmp -march=armv7-a -mfpu=vfpv3-d16
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FFLAGS = -O4 -fopenmp -march=armv7-a -mfpu=vfpv3-d16
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OMP_NUM_THREADS=4,GOMP_CPU_AFFINITY=0 1 2 3
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OMP_NUM_THREADSwallclock time for sgefa (Sec)clock time for sgefa (Sec)max. abs errm
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42.255E+009.020E+006.06E+20
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42.278E+009.100E+006.06E+20
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42.268E+009.070E+006.06E+20
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平均2.267E+009.063E+00
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OMP_NUM_THREADS=3,GOMP_CPU_AFFINITY=1 2 3
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OMP_NUM_THREADSwallclock time for sgefaclock time for sgefamax. abs errm
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32.792E+008.380E+006.06E+20
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32.848E+008.550E+006.06E+20
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32.807E+008.430E+006.06E+20
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平均2.816E+008.453E+00
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OMP_NUM_THREADS=2,GOMP_CPU_AFFINITY=0 2
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OMP_NUM_THREADSwallclock time for sgefaclock time for sgefamax. abs errm
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22.566E+005.130E+006.06E+20
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22.621E+005.240E+006.06E+20
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23.861E+007.720E+006.06E+20
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平均3.016E+006.030E+00
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OMP_NUM_THREADS=1,GOMP_CPU_AFFINITY=2
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OMP_NUM_THREADSwallclock time for sgefaclock time for sgefamax. abs errm
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14.817E+004.810E+006.06E+20
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14.818E+004.820E+006.06E+20
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14.818E+004.820E+006.06E+20
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平均4.818E+004.817E+00
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Thread=4 / thread=1 ratio (wallclock time)2.13
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sigle core performance (MFlpos)166.00
http://ameblo.jp/takeoka/entry-11995020242.html
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4 thread total performance (MFlops)352.76
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-----------
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参考: gcc,gfortran=4.6.3
CFLAGS = -O4 -fopenmp -march=armv7-a -mfpu=vfpv3-d16
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FFLAGS = -O4 -fopenmp -march=armv7-a -mfpu=vfpv3-d16
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OMP_NUM_THREADS=4,GOMP_CPU_AFFINITY=0 1 2 3
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OMP_NUM_THREADSwallclock time for sgefaclock time for sgefamax. abs errm
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42.436E+009.740E+006.06E+20
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42.400E+009.600E+006.06E+20
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42.387E+009.540E+006.06E+20
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平均2.408E+009.627E+00
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