Benchmark of SGI O3K with 600Mhz Processors

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SGI Origin 3000

Machine Description


					Model Number	Origin 3000
					Number of Processors	32 and 256
					Processor Type	R14000 @ 600 MHz
					Operating System	IRIX64, Rel. 6.5

Problem and Results

Date Started	08/30/2001	08/30/2001	10/05/2001	12/29/2001
Code Used	Example 11	Example 11	Example 11	Example 11
Number of Equations	15,000	50,000	100,000	200,000
Number of Vectors	1	1	1	1,000
Matrix Sparsity	Full	Full	Full	Full
Matrix Symmetry	Nonsymmetric with Pivoting	Nonsymmetric with Pivoting	Nonsymmetric with Pivoting	Nonsymmetric with Pivoting
Data Type	16-byte Complex	16-byte Complex	16-byte Complex	16-byte Complex
Number of Processors	32	32	32	256
Memory for FMS(Gbytes)	18	18	19	48
CPU Time (Day::Hr:Min:Sec)	3:13:46	3::20:33:57	29::19:43:44	355::03:28:10
Wall Time (Day::Hr:Min:Sec)	6:59	3:12:01	1::01:20:23	1::14:56:17
I/O Wait Time (Hr:Min:Sec)	Incore	5:03	23:16	5:00
Megaflops per Processor	774	1,000	1,034	695
Overall Megaflops	21,495	28,934	29,232	152,190
Parellel Speedup	27.76 out of 32	28.93 out of 32	28.25 out of 32	218.90 out of 256

NOTES:

CPU Time is the total amount of User and System time used by all processors.

Wall Time is the elapsed time measured on a dedicated machine. This includes the time spent processing and any time spent waiting for I/O to complete.

I/O Wait Time is the total time spent waiting for I/O to complete that is not overlapped by asynchronous I/O.

Megaflops per Processor is the theoretical number of floating point operations performed, divided by the CPU time.

Overall Megaflops is the total number of floating point operations performed, divided by the Wall Time.

Parallel Speedup is overall increase in performance due to parallel processing.

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