Research Article

A Heterogeneous System Based on Latent Semantic Analysis Using GPU and Multi-CPU

Table 3

Results of the Document Parser procedure in milliseconds of the semantic space stage in the LSA system using CPU sequential-only architecture and in the hLSA system using multi-CPU architecture with four, eight, and sixteen processors.

Document Parser Procedure
Number of documentsLSA
(ms)
hLSA
with 4 processors (ms)
hLSA
with 8 processors (ms)
hLSA
with 16 processors (ms)

5001681.982676.587504.683549.639
7502587.0801003.574720.285780.755
10003453.1871351.907984.8711037.802
12504241.6411549.0461205.0271128.528
15005121.4491770.9751303.5071347.592
17506016.3462236.5821522.0951596.852
20006806.5952158.2351789.5951766.482
25008645.5032667.6312212.3382215.629
300010351.7103799.5122594.9762740.206
350012066.5474420.2483077.6263065.884
400013762.0604582.3663495.7623442.618
500017247.3016029.2884477.2064352.604