Forum > Windows
GPU crunching question
popandbob:
I found out there is somehow an issue with the ms vc8 runtime... Its saying something in the system logs about it not being able to find it??? ::)
Lani:
NVIDIA 6800GT / AGP 8X
RapidMind 2D FFT Benchmark
===============================================
Size: 256 x 256 = 2^8 x 2^8
Radix: 4 = 2^2
Total number of floating point operations: 5.24288e+006
Run timings, to and from host (in ms):
Average execution time: 10.5939ms
Overall average execution time: 10.5969ms
Minimum execution time: 9.46549ms
Average Mflops: 494.894
Peak Mflops: 553.894
Run timings, GPU-local (in ms):
Average execution time: 8.78433ms
Overall average execution time: 8.78745ms
Minimum execution time: 6.78877ms
Average Mflops: 596.845
Peak Mflops: 772.287
================================================
NVIDIA 7950GT / PCI-E 16x
RapidMind 2D FFT Benchmark
===============================================
Size: 256 x 256 = 2^8 x 2^8
Radix: 4 = 2^2
Total number of floating point operations: 5.24288e+006
Run timings, to and from host (in ms):
Average execution time: 9.1814ms
Overall average execution time: 9.18307ms
Minimum execution time: 8.70856ms
Average Mflops: 571.032
Peak Mflops: 602.037
Run timings, GPU-local (in ms):
Average execution time: 13.5061ms
Overall average execution time: 13.5087ms
Minimum execution time: 7.27945ms
Average Mflops: 388.186
Peak Mflops: 720.23
Beorn:
Nvidia GF 6600GT 586/1170, AGP 8X
RapidMind 2D FFT Benchmark
===============================================
Size: 256 x 256 = 2^8 x 2^8
Radix: 4 = 2^2
Total number of floating point operations: 5.24288e+006
Run timings, to and from host (in ms):
Average execution time: 12.1971ms
Overall average execution time: 12.2005ms
Minimum execution time: 11.4063ms
Average Mflops: 429.848
Peak Mflops: 459.649
Run timings, GPU-local (in ms):
Average execution time: 7.9736ms
Overall average execution time: 7.97726ms
Minimum execution time: 6.83655ms
Average Mflops: 657.53
Peak Mflops: 766.89
mr.kjellen:
...and on an ASUS 7900GTX
I ran both tests a couple of times and the results vary quite a lot. The average Mflops and Peak Mflops vary from around 300ish-700ish.
Not sure how much I trust my mobo...the Asrock 939dual-SATA with a ULI chipset.
Got the memory error as well.
fft
min_n = 4
max_n = 4
RapidMind FFT Benchmark
-----------------------------------------------
Length: 16 = 2^4
Warming up...
Run timings, to and from host (in us):
13474.2 12450.4 12100.6 12176.3 12000.8
12249.2 12216.8 12083 12250.6 12171
12129.6 12050 11978.5 12079.4 13231.3
12345.6 12037.7 12215.4 12052.5 12014
12155.4 12135.5 12087.7 12014.5 12105.3
12027.1 12308.5 12053.4 11998.3 12088.6
12097.2 12031.3 12094.2 12043.9 12319.1
12197 12095 12147.8 12140.8 12043.9
12169.3 12099.5 12098.9 12119.9 12060.9
12024.6 12077.7 12170.2 12111.2 12076.6
12091.6 12133 12135.2 12209.6 12089.4
12103.9 12028.8 11999.2 12024.3 12043
12183.6 12231.1 12174.4 12210.7 12083.3
12010.9 12070.1 11913.1 11718.9 12044.7
12047.2 12182.5 12024.3 12123.2 12045.8
12149.8 12104.2 12116.5 12075.7 12157.3
12092.8 12118.2 12050 11907 11965.1
11988.5 12042.5 12148.4 12173.2 12149.8
11928.2 11948.9 12036.9 12133.8 12017.6
11158.1 12135.8 12360.2 11971.8 12029.1
Average execution time: 12113.8us
Normalized execution time (T/N): 757.113us/sample
Normalized by complexity (T/N lg N): 189.278
Mflops (5 N lg N/T): 0.0264161
Average execution time: 12113.8us
Minimum execution time: 11158.1us
Normalized average execution time (T/N): 757.113us/sample
Normalized minimum execution time (T/N): 697.384us/sample
Average time normalized by complexity (T/N lg N): 189.278
Minimum time normalized by complexity (T/N lg N): 174.346
Average Mflops (5 N lg N/T): 0.0264161
Peak Mflops (5 N lg N/T): 0.0286786
---
Warming up...
Run timings, GPU-local (in us):
11817.5 11669.2 11650.5 11724.5 11810.3
11599.3 11591.5 11692.9 11739.3 11620
11769.5 11737.4 11725.6 11675.9 11781.8
11786.8 11600.7 11614.7 11734.8 11786.5
11787.1 11696.6 11653.3 11707.2 11798.8
11590.1 11651 11680.6 11735.4 11728.7
11698.8 11841.6 11611.9 11674.5 11639.8
11797.1 11723.4 11594.9 11648.2 11911.1
11371.3 11533.7 11715.3 11645.7 11601
11682.3 11670.6 11712.2 11644 11650.5
11862.8 11576.1 11635.7 11578.9 11748.8
11704.1 11615.8 11635.4 11584.2 11649.6
11725.3 11581.7 11577.5 11596.3 11528.4
11659.1 11597.9 11703.5 11038.6 11949.4
11815.3 11751.6 11758.9 11650.5 11527.8
11628.1 11589.3 11617.8 11594 11813.1
11807.8 11637.9 11572.2 11654.7 11650.7
11688.7 11806.7 11739.9 11730.9 11735.1
11735.1 11711.9 11772.3 11613.6 11596.8
11770.3 11682.6 11734.3 11742.4 11727.6
Average execution time: 11679.3us
Minimum execution time: 11038.6us
Normalized average execution time (T/N): 729.958us/sample
Normalized minimum execution time (T/N): 689.91us/sample
Average time normalized by complexity (T/N lg N): 182.489
Minimum time normalized by complexity (T/N lg N): 172.477
BenchFFT average Mflops (5 N lg N/T): 0.0273988
BenchFFT peak Mflops (5 N lg N/T): 0.0289893
Residuals (compare with inverse):
Average absolute: 2.4984e-008
Maximum absolute: 1.19267e-007
Average relative: -1.#IND
Maximum relative: 1.#INF
-----------------------------------------------
fft2d
RapidMind 2D FFT Benchmark
===============================================
Size: 256 x 256 = 2^8 x 2^8
Radix: 4 = 2^2
Total number of floating point operations: 5.24288e+006
Run timings, to and from host (in ms):
Average execution time: 17.5728ms
Overall average execution time: 17.5754ms
Minimum execution time: 15.4032ms
Average Mflops: 298.352
Peak Mflops: 340.376
Run timings, GPU-local (in ms):
Average execution time: 9.77248ms
Overall average execution time: 9.77488ms
Minimum execution time: 7.6717ms
Average Mflops: 536.494
Peak Mflops: 683.406
Devaster:
nvidia CUDA is now free !!!!
i have seen a seti client development runnig on gpu with CUDA ....(see seti forums ...)
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