romanus/perf-eng-lab1

perf-eng-lab1

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Prerequisites

• 2 GB of RAM (1 GB is used while running)
• AVX2 commands are used
• blas should be linked properly in Makefile
• chmod +x test.sh

Run

./test.sh

Results

macbook893:perf-eng-lab1 trom$ ./test.sh 
gcc -march=native -O0 -g0 -std=c++14 -lstdc++ -o main main.cpp -I/usr/local/opt/openblas/include -L/usr/local/opt/openblas/lib -lopenblas

Vectors mult and add
raw      0.19s
raw      0.19s
raw      0.18s
vec      0.07s
vec      0.07s
vec      0.06s

Matrices mult
raw      11.89s
raw      9.24s
raw      7.54s
blas     0.09s
blas     0.07s
blas     0.07s
vec      2.76s
vec      2.95s
vec      2.97s

Short strings
raw      0.11s
vec      1.08s
Other strings:
raw      2.68s
vec      11.58s
Long strings:
raw      5.97s
vec      21.59s

Results (-O3)

macbook893:perf-eng-lab1 trom$ ./test.sh 
gcc -march=native -O3 -g0 -std=c++14 -lstdc++ -o main main.cpp -I/usr/local/opt/openblas/include -L/usr/local/opt/openblas/lib -lopenblas

Vectors mult and add
raw      0.00s
raw      0.00s
raw      0.00s
vec      0.00s
vec      0.00s
vec      0.00s

Matrices mult
raw      2.13s
raw      2.03s
raw      2.01s
blas     0.09s
blas     0.08s
blas     0.07s
vec      0.27s
vec      0.26s
vec      0.25s

Short strings
raw      0.04s
vec      0.12s
Other strings:
raw      1.11s
vec      3.54s
Long strings:
raw      2.35s
vec      6.85s