Table 6.
Mean execution times and speedup ratio analysing 100 microarrays on cluster environment
| 1 job | 5 job | 10 job | 15 job | 20 job | |
| Module 1 | 285 sec | 63.80 sec | 35.20 sec | 26.40 sec | 25.65 sec |
| Module 2 | 344 sec | 81.60 sec | 58.00 sec | 44.47 sec | 39.55 sec |
| Module 1+2 | 629 sec | 145.40 sec | 93.20 sec | 70.87 sec | 65.20 sec |
| speedup ratio module 1 | 4.47 | 8.09 | 10.79 | 11.11 | |
| speedup ratio module 2 | 4.22 | 5.93 | 7.74 | 8.69 | |
| speedup ratio module 1+2 | 4.33 | 6.75 | 8.88 | 9.65 |
The table shows the mean execution times coming from three different execution of dChip MPI version run on LITBIO cluster using respectively 1, 5, 10, 15, 20 parallel jobs to compute the expression values of 100 microarrays. To estimate the parallelization efficiency, the speedup ratio (S(N) = T(1)/T(N), where T(1) is the execution time on a single processor and T(N) the execution time on N processors) was calculated.