Tests of execution rates were taken from standard distributions of ATLAS and SCALAPACK.
Results of ATLAS testing on single processor:
LU factorisation tests
- M,N - matrix dimensions;
- TIME - CPU time in seconds;
- MFLOP - execution rate;
- RESID - residual of factorisation;
- lda - leading matrix dimension.
complex single precision:
NREPS Major M N lda NPVTS TIME MFLOP RESID
===== ===== ===== ===== ===== ===== ======== ======== ========
0 Col 100 100 100 95 0.010 265.667 9.976e-02
0 Col 200 200 200 193 0.030 709.778 7.859e-02
0 Col 300 300 300 293 0.100 719.100 8.082e-02
0 Col 400 400 400 396 0.190 897.404 7.025e-02
0 Col 500 500 500 495 0.360 925.231 7.226e-02
0 Col 600 600 600 592 0.560 1027.929 6.524e-02
0 Col 700 700 700 698 0.870 1050.778 6.804e-02
0 Col 800 800 800 797 1.220 1118.601 6.324e-02
0 Col 900 900 900 895 1.640 1184.872 5.568e-02
0 Col 1000 1000 1000 995 2.090 1275.439 5.835e-02
double precision
NREPS Major M N lda NPVTS TIME MFLOP RESID
===== ===== ===== ===== ===== ===== ======== ======== ========
0 Col 100 100 100 95 0.000 0.000 2.033e-02
0 Col 200 200 200 194 0.020 265.667 1.880e-02
0 Col 300 300 300 295 0.050 359.100 1.366e-02
0 Col 400 400 400 394 0.110 387.152 1.337e-02
0 Col 500 500 500 490 0.200 416.042 1.226e-02
0 Col 600 600 600 594 0.310 463.935 1.304e-02
0 Col 700 700 700 693 0.520 439.272 1.045e-02
0 Col 800 800 800 793 0.730 467.142 1.002e-02
0 Col 900 900 900 893 1.040 466.918 1.117e-02
0 Col 1000 1000 1000 995 1.410 472.459 9.980e-03
single precision
NREPS Major M N lda NPVTS TIME MFLOP RESID
===== ===== ===== ===== ===== ===== ======== ======== ========
0 Col 100 100 100 95 0.000 0.000 4.906e-02
0 Col 200 200 200 194 0.010 531.333 3.685e-02
0 Col 300 300 300 295 0.030 598.500 3.653e-02
0 Col 400 400 400 394 0.050 851.733 3.627e-02
0 Col 500 500 500 490 0.100 832.083 3.831e-02
0 Col 600 600 600 594 0.190 756.947 3.060e-02
0 Col 700 700 700 693 0.230 993.138 3.618e-02
0 Col 800 800 800 793 0.330 1033.374 2.909e-02
0 Col 900 900 900 893 0.440 1103.625 3.372e-02
0 Col 1000 1000 1000 995 0.610 1092.077 3.269e-02
double complex precision
NREPS Major M N lda NPVTS TIME MFLOP RESID
===== ===== ===== ===== ===== ===== ======== ======== ========
0 Col 100 100 100 95 0.010 265.667 3.536e-02
0 Col 200 200 200 193 0.050 425.867 2.882e-02
0 Col 300 300 300 293 0.160 449.437 2.443e-02
0 Col 400 400 400 396 0.340 501.490 2.266e-02
0 Col 500 500 500 495 0.690 482.729 2.293e-02
0 Col 600 600 600 592 1.170 492.000 2.234e-02
0 Col 700 700 700 698 1.820 502.295 2.076e-02
0 Col 800 800 800 797 2.580 528.951 1.922e-02
0 Col 900 900 900 895 3.740 519.570 1.888e-02
0 Col 1000 1000 1000 995 5.070 525.773 1.900e-02
NAS Parallel Benchmarks
The NAS Parallel Benchmarks (NPB)
are a set of 8 programs designed to help evaluate the performance of parallel
supercomputers:
- FT - three-dimensional Fast Fourier Transform;
- MG - multigrid solving of three-dimensional Poisson's equation;
- LU, BT, SP - solving of finite difference discretization of the 3-D
compressible Navier-Stokes equations by different factorization methods;
- CG - solving of system of linear equations by conjugate gradient method;
- EP - generation of the random numbers with Gaussian distribution;
- IS - sorting of integer numbers.
Figure. 1. Cluster performance via number of running processes
(size) for different benchmarks.
Cluster performance with using of MOSIX system (index m) and without it.
Figure. 2. Running of processes with low priority (nice) for
different benchmarks and different number of processes.
