ASCI White (Frost)

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The numbers are the result of averaging 20 runs on 16,32,64,128 and 256 processors on the non-classified portion of ASCI White known as Frost. For more information on this system consult http://www.llnl.gov/asci/platforms/white/. Up to 512 processors are available on the Frost portion of ASCI White. The distribution of the output times is a bit less than normal in most cases. The links of the processor numbers show graphs of the output time distribution across the 20 runs.

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Show Graphs
Parallel-Netcdf Flash I/O Bench (nxb=8,nyb=8,nzb=8)

	checkpoint file			plotfile			plotfile w/ corners
# of procs	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec
16	124544	6.41	19.4	14912	1.14	13.1	10512	1.09	9.6
32	249168	13	19.2	29808	2.75	10.8	21024	2.59	8.1
64	498688	18.1	27.6	59632	3.49	17.1	42496	3.7	11.5
128	996896	23.46	42.5	119264	4.53	26.3	84112	5.07	16.6
256	1993888	37.99	52.5	238592	6.63	36	168240	6.52	25.8
512	3987872	59.12	67.5	477184	13.72	34.8	336896	11.46	29.4

Parallel-Netcdf Flash I/O Bench (nxb=16,nyb=16,nzb=16)

	checkpoint file			plotfile			plotfile w/ corners
# of procs	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec
16	994784	14.73	67.6	99568	2.68	37.1	83040	2.59	32
32	1990656	28.74	69.3	199200	5.7	34.9	166128	5.27	31.5
64	3981824	48.16	82.7	398480	7.29	54.7	332304	7.82	42.5
128	7963648	70.36	113.2	797008	10.64	74.9	665088	12.11	54.9
256	15927808	167.15	95.3	1594096	17.15	92.9	1329664	19.35	68.7

HDF5 Flash I/O Bench (nxb=8,nyb=8,nyz=8)

	checkpoint file			plotfile			plotfile w/ corners
# of procs	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec
16	129088	8.94	14.4	15472	1.87	8.3	11296	1.57	7.2
32	252288	28.62	8.8	30176	4.80	6.3	21824	3.90	5.6
64	498688	37.9	13.2	60080	5.49	10.9	42496	5.01	8.5
128	997376	63.62	15.7	119904	7.39	16.2	84224	6.68	12.6
256	1994240	80.22	24.9	239024	8.94	26.7	168448	9.72	17.3
512	3987888	142.6	28	477088	16.95	28.1	336480	15.04	22.4

HDF5 Flash I/O Bench (nxb=16,nyb=16,nyz=16)

	checkpoint file			plotfile			plotfile w/ corners
# of procs	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec	size MB	Avg. time	MB/sec
16	995552	15.57	63.9	100384	7.72	13	83184	6.65	12.5
32	1991136	216.3	9.2	200000	17.19	11.6	166384	16.87	9.9
64	3982304	543.2	7.3	398992	20.55	19.4	332528	22.66	14.7
128	7964640	404.2	19.7	797744	31.9	25	664816	23.51	28.3
256	15928800	704.7	22.6	1594736	43.94	36.3	1329648	33.65	39.5