. Author manuscript; available in PMC: 2015 Nov 19.

Published in final edited form as: IEEE Conf High Perform Extreme Comput. 2014 Sep;2014:10.1109/HPEC.2014.7040981. doi: 10.1109/HPEC.2014.7040981

Table 3. Performance results for CPU and GPU PIPER implementations. Technologies are in Table 2. All times are in milliseconds.

	CPU 8 core		Kepler PIPER09			Kepler PIPER14			Fermi PIPER14
	time	percent	time	percent	speedup	time	percent	speedup	time	percent	speedup
Charge assignment	6.3	1.7%	42	17.6%	0.15×	1.2	3.4%	5.2×	1.4	2.5%	4.5×
Correlations	108.1	92.9%	88	37.0%	1.23×	32.0	91.4%	3.4×	52.3	91.8%	2.1×
Acc., score, filter	2.0	5.3%	108	45.4%	0.02×	1.0	2.9%	2.0×	1.0	1.8%	2.0×
Miscellaneous	0.0	0.0%	0	0.0%	— -	0.8	2.3%	— -	2.3	4.0%	— -
Total per rotation	116.4	100%	238	100%	0.49×	35.0	100%	3.3×	57.0	100%	2.0×