Performance

Carver (Fermi with ECC)

• Tester: Ben Gamari
• Test date: 14 Jul 2010
• Commit: e3e4ffafd158abd004c483694a27f4f6bc7d2185
• Hardware: Tesla C2050 (ECC on)
• CUDA version 3.0

Kernel	Configuration	Bandwidth	FLOPs
Dslash_cuda	Dslash (24^4)	73 GB/s	32 GFLOP/s
	hopping (24^4)	74 GB/s	34 GFLOP/s
Dslash_multi_gpu (double)	1 node, 24^4 Dslash	79 GB/s	35 GFLOP/s
	2 nodes, 24^4 Dslash	145 GB/s	64 GFLOP/s
	4 nodes, 24^4 Dslash	256 GB/s	114 GFLOP/s
Dslash_multi_gpu (double)	1 node, 24^4 Dslash	79 GB/s	76 GFLOP/s
	2 nodes, 24^4 Dslash	156 GB/s	140 GFLOP/s
	4 nodes, 24^4 Dslash	283 GB/s	252 GFLOP/s
Vector utilities	Addition	82 GB/s	3.4 GFLOP/s
	Dot product	88 GB/s	N/A
	Copy	84 GB/s	N/A

Carver (Fermi without ECC)

• Tester: Ben Gamari
• Test date: 14 Jul 2010
• Commit: e3e4ffafd158abd004c483694a27f4f6bc7d2185
• Hardware: Tesla C2050 (ECC off)
• CUDA version 3.0

Kernel	Configuration	Bandwidth	FLOPs
Dslash_cuda	Dslash (24^4)	85 GB/s	38 GFLOP/s
	hopping (24^4)	86 GB/s	39 GFLOP/s
Dslash_multi_gpu (double)	1 node, 24^4 Dslash	96 GB/s	43 GFLOP/s
	2 nodes, 24^4 Dslash	179 GB/s	82 GFLOP/s
	4 nodes, 24^4 Dslash	304 GB/s	139 GFLOP/s
Dslash_multi_gpu (single)	1 node, 24^4 Dslash	114 GB/s	101 GFLOP/s
	2 nodes, 24^4 Dslash	210 GB/s	187 GFLOP/s
	4 nodes, 24^4 Dslash	279 GB/s	256 GFLOP/s
Vector utilities	Addition	110 GB/s	4.6 GFLOP/s
	Dot product	119 GB/s	N/A
	Copy	114 GB/s	N/A

Samurai (G80)

• Tester: Ben Gamari
• Test date: 14 Jul 2010
• Commit: e4b3a766ec873f57cc7ef31b4167bc2f032d418e
• Hardware: GeForce GTX 280
• CUDA version 3.1

Kernel	Configuration	Bandwidth	FLOPs
Dslash_cuda	Dslash (24^4)	76 GB/s	34 GFLOP/s
	hopping (24^4)	75 GB/s	34 GFLOP/s
Dslash_multi_gpu (double)	1 node, 24^4 Dslash	77 GB/s	34 GFLOP/s
	Dslash_multi_gpu (single)	1 node, 24^4 Dslash	91 GB/s	81 GFLOP/s
		Vector utilities	Addition	113 GB/s	4.7 GFLOP/s
Dot product			77 GB/s	N/A
Copy	121 GB/s		N/A