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ex3_benchmarks/test_system.txt

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+ ---------------------------------- 1. ----------------------------------
+
+
+rm -f *.exe *.o
+gcc -O3    -c -o mysecond.o mysecond.c
+gcc -O3  -c mysecond.c
+gfortran -O3 -DSTREAM_ARRAY_SIZE=80000000 -DNTIMES=20   -c stream.f
+gfortran -O3 stream.o mysecond.o -o stream_f.exe
+gcc -O3  -DSTREAM_ARRAY_SIZE=80000000 -DNTIMES=20  stream.c -o stream_c.exe
+gcc -O3  -DUNIX flops.c -o flops.exe
+flops.c: In function ‘main’:
+flops.c:231:4: warning: implicit declaration of function ‘dtime’ [-Wimplicit-function-declaration]
+  231 |    dtime(TimeArray);
+      |    ^~~~~
+flops.c: At top level:
+flops.c:723:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
+  723 | dtime(p)
+      | ^~~~~
+./stream_c.exe
+-------------------------------------------------------------
+STREAM version $Revision: 5.10 $
+-------------------------------------------------------------
+This system uses 8 bytes per array element.
+-------------------------------------------------------------
+Array size = 80000000 (elements), Offset = 0 (elements)
+Memory per array = 610.4 MiB (= 0.6 GiB).
+Total memory required = 1831.1 MiB (= 1.8 GiB).
+Each kernel will be executed 20 times.
+ The *best* time for each kernel (excluding the first iteration)
+ will be used to compute the reported bandwidth.
+-------------------------------------------------------------
+Your clock granularity/precision appears to be 1 microseconds.
+Each test below will take on the order of 79294 microseconds.
+   (= 79294 clock ticks)
+Increase the size of the arrays if this shows that
+you are not getting at least 20 clock ticks per test.
+-------------------------------------------------------------
+WARNING -- The above is only a rough guideline.
+For best results, please be sure you know the
+precision of your system timer.
+-------------------------------------------------------------
+Function    Best Rate MB/s  Avg time     Min time     Max time
+Copy:           26720.6     0.057416     0.047903     0.098979
+Scale:          17008.6     0.087616     0.075256     0.133899
+Add:            19169.9     0.113818     0.100157     0.177676
+Triad:          19144.9     0.111248     0.100288     0.170877
+-------------------------------------------------------------
+Solution Validates: avg error less than 1.000000e-13 on all three arrays
+-------------------------------------------------------------
+./flops.exe
+
+   FLOPS C Program (Double Precision), V2.0 18 Dec 1992
+
+   Module     Error        RunTime      MFLOPS
+                            (usec)
+     1      4.0146e-13      0.0023   6183.8896
+     2     -1.4166e-13      0.0006  11377.1999
+     3      4.7184e-14      0.0034   5031.5222
+     4     -1.2557e-13      0.0031   4841.2566
+     5     -1.3800e-13      0.0056   5208.6586
+     6      3.2380e-13      0.0053   5484.2426
+     7     -8.4583e-11      0.0031   3832.8326
+     8      3.4867e-13      0.0055   5410.0375
+
+   Iterations      =  512000000
+   NullTime (usec) =     0.0000
+   MFLOPS(1)       =  8055.7366
+   MFLOPS(2)       =  4732.2658
+   MFLOPS(3)       =  5164.0037
+   MFLOPS(4)       =  5257.0181