27 April 2009 10:54:33.282 PM WTIME_PRB FORTRAN77 version. Demonstrate the use of the WTIME timer. TEST03 Time the unvectorized loops: do i = 1, n y(i) = x(i) y(i) = PI * x(i) ) y(i) = sqrt ( x(i) ) y(i) = exp ( x(i) ) end do Data vectors will be of minimum size 4096 Data vectors will be of maximum size 4194304 Number of repetitions of the operation: 5 Timing results: Vector Size Rep #1 Rep #2 Rep #3 Rep #4 Rep #5 4096 0.000000 0.000000 0.000000 0.000000 0.000000 8192 0.000000 0.000000 0.000000 0.000000 0.000000 16384 0.000000 0.000000 0.000000 0.000000 0.000000 32768 0.000000 0.001000 0.000000 0.000000 0.000000 65536 0.002000 0.001000 0.001000 0.001000 0.000000 131072 0.002000 0.001000 0.001000 0.002000 0.001000 262144 0.005000 0.003000 0.003000 0.004000 0.003000 524288 0.011000 0.008000 0.007000 0.007000 0.007000 1048576 0.021000 0.014000 0.014000 0.015000 0.015000 2097152 0.041000 0.028000 0.028000 0.030000 0.029000 4194304 0.087000 0.056000 0.059000 0.058000 0.058000 Timing results: Vector Size Rep #1 Rep #2 Rep #3 Rep #4 Rep #5 4096 0.000000 0.000000 0.000000 0.000000 0.000000 8192 0.000000 0.000000 0.000000 0.000000 0.001000 16384 0.000000 0.000000 0.000000 0.001000 0.000000 32768 0.000000 0.000000 0.001000 0.000000 0.000000 65536 0.000000 0.001000 0.001000 0.001000 0.001000 131072 0.002000 0.002000 0.002000 0.002000 0.002000 262144 0.004000 0.003000 0.003000 0.004000 0.004000 524288 0.007000 0.008000 0.008000 0.007000 0.007000 1048576 0.016000 0.015000 0.015000 0.016000 0.016000 2097152 0.032000 0.032000 0.030000 0.030000 0.029000 4194304 0.063000 0.060000 0.061000 0.060000 0.061000 Timing results: Vector Size Rep #1 Rep #2 Rep #3 Rep #4 Rep #5 4096 0.000000 0.000000 0.000000 0.000000 0.000000 8192 0.000000 0.000000 0.000000 0.000000 0.000000 16384 0.000000 0.001000 0.001000 0.001000 0.001000 32768 0.001000 0.002000 0.001000 0.001000 0.001000 65536 0.002000 0.003000 0.002000 0.002000 0.002000 131072 0.004000 0.004000 0.004000 0.005000 0.004000 262144 0.008000 0.009000 0.009000 0.008000 0.009000 524288 0.017000 0.018000 0.018000 0.018000 0.017000 1048576 0.035000 0.036000 0.036000 0.039000 0.037000 2097152 0.071000 0.074000 0.071000 0.074000 0.076000 4194304 0.142000 0.142000 0.141000 0.143000 0.149000 Timing results: Vector Size Rep #1 Rep #2 Rep #3 Rep #4 Rep #5 4096 0.000000 0.001000 0.000000 0.001000 0.000000 8192 0.000000 0.001000 0.001000 0.000000 0.001000 16384 0.001000 0.001000 0.001000 0.001000 0.002000 32768 0.002000 0.002000 0.002000 0.002000 0.003000 65536 0.005000 0.004000 0.004000 0.004000 0.005000 131072 0.009000 0.010000 0.009000 0.009000 0.010000 262144 0.019000 0.018000 0.019000 0.019000 0.019000 524288 0.038000 0.038000 0.037000 0.037000 0.037000 1048576 0.076000 0.076000 0.075000 0.075000 0.077000 2097152 0.151000 0.152000 0.145000 0.149000 0.153000 4194304 0.303000 0.300000 0.303000 0.297000 0.301000 WTIME_PRB Normal end of execution. 27 April 2009 10:54:46.149 PM