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HW 9 Results

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f13-759-biondo

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Unread post Sat Nov 09, 2013 1:19 pm

HW 9 Results

Problem 1:
Max N Reduction: 66292994
Time required to reduce Max N: 2533.2786564 ms

Problem 2:
Max N Reduction: 67108864
Time required to reduce Max N: 5108.289551 ms
Attachments
problem_1.png
problem_1.png (43.18 KiB) Viewed 6722 times
problem_2.png
problem_2.png (44.16 KiB) Viewed 6722 times
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f13-759-wickre

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Unread post Wed Nov 13, 2013 11:43 pm

Re: HW 9 Results

Run on my computer (Pentium i5, GTX 660M GPU)
Problem 1:
Max N Reduction: 262,000,000
Time Required to reduce 262,000,000:
CPU Sequential: 254 ms
CPU OpenMP: 101 ms
GPU Kernel: 470 ms
GPU Thrust: 1130 ms
Attachments
ReductionScaling.png
ReductionScaling.png (34.35 KiB) Viewed 6642 times
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f13-759-wickre

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Unread post Sat Nov 16, 2013 10:29 pm

Re: HW 9 Results

For Problem 2 (prefix scan), again running on my laptop

Max number of elements 265,000,000
Timings:
CPU: 984.389 ms
GPU kernel: 1497.958 ms
Thrust: 477.873 ms
Attachments
PrefixScanScaling.png
PrefixScanScaling.png (38.02 KiB) Viewed 6610 times
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f13-759-govardan

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Unread post Sun Nov 17, 2013 3:39 pm

Re: HW 9 Results

Problem_1.png
Problem_1.png (56.19 KiB) Viewed 6601 times
Problem 1:

Using Thrust:
Max N Reduction: 350000000
Time required to reduce Max N: 321.157 ms

Using Parallel Redution Technique:
Max N Reduction: 16000000
Time required to reduce Max N: 51.78 ms
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Dan Negrut

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Unread post Sun Nov 17, 2013 4:52 pm

Re: HW 9 Results

Please include your first name.
Please post the hardware that you are using, some of these results are interesting.
Please make sure you build in prod mode.

As of now, the results are all over the map. Interesting.
Dan
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f13-759-yarya

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Unread post Mon Nov 18, 2013 2:03 pm

Re: HW 9 Results

Exclusive Scan, Run on Euler.

- Yash.
Attachments
Scan.png
Yash, HW9, ExScan, Run on Euler.
Scan.png (9.01 KiB) Viewed 6565 times
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f13-759-yarya

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Unread post Mon Nov 18, 2013 2:06 pm

Re: HW 9 Results

Reduction, run on Euler.

-Yash.
Attachments
ReduceThrust.png
Yash, HW9, Reduce, Run on Euler.
ReduceThrust.png (8.93 KiB) Viewed 6565 times
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f13-759-agola

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Unread post Mon Nov 18, 2013 4:15 pm

Re: HW 9 Results

reduction.png
reduction.png (16.82 KiB) Viewed 6528 times
prefixscan.png
prefixscan.png (32.26 KiB) Viewed 6528 times


Largest N = 17465344
Thrust Exclusive = 1.269024
CPU = 136.659225
GPU Exclusive = 39.046432
Test PASSED



-Anjali Gola
Last edited by f13-759-agola on Mon Nov 18, 2013 5:34 pm, edited 1 time in total.
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f13-759-gkumar3

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Unread post Mon Nov 18, 2013 4:43 pm

Re: HW 9 Results

Device- NVIDIA GeForce GTS 450

Problem1
Maximum – 50,000,000
Time for max- 24.29ms (Thrust) , 65.88ms (Custom implementation)

vec_red.PNG
vec_red.PNG (19.53 KiB) Viewed 6538 times


Problem2
Maximum – 50,000,000
Time for max- 73.44ms (Thrust) , 239.83ms (Custom implementation)

scan.PNG
scan.PNG (20.93 KiB) Viewed 6538 times


-Goldy
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f13-759-pkgupta3

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Unread post Mon Nov 18, 2013 8:14 pm

Re: HW 9 Results

HW9_scan_logplot.png
Scan results on linear scale
HW9_scan_logplot.png (13.92 KiB) Viewed 6509 times
HW9_vector_red_logplot.png
Vector Reduction results on log scale
HW9_vector_red_logplot.png (16.58 KiB) Viewed 6509 times
HW9_vector_red_lplot.png
Vector Reduction results on linear scale
HW9_vector_red_lplot.png (12.21 KiB) Viewed 6509 times



-Prateek
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f13-759-pkgupta3

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Unread post Mon Nov 18, 2013 8:15 pm

Re: HW 9 Results

HW9_scan_log_plot.png
Scan results on log scale
HW9_scan_log_plot.png (18.49 KiB) Viewed 6509 times


-Prateek
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f13-759-megavannan

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Unread post Mon Nov 18, 2013 8:21 pm

Re: HW 9 Results

http://imageshack.com/a/img845/4027/24m6.png

Max N for parallel reduction : 2^7
exclusive time using thrust: 191 ms
with out using thrust: 373 ms
Max N for prefix scan: 2^7
exclusive time using thrust: 154ms
with out using thrust: 636 ms

--Vennila
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f13-759-pkgupta3

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Unread post Mon Nov 18, 2013 8:27 pm

Re: HW 9 Results

Problem 1:
Max N Reduction: 120000000
Time required to reduce Max N: 304.1764 ms

Problem 2:
Max N Scan: 67000000
Time required to reduce Max N: 300.87 ms

-Prateek
Last edited by f13-759-pkgupta3 on Mon Nov 18, 2013 8:52 pm, edited 1 time in total.
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f13-759-chada2

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Unread post Mon Nov 18, 2013 8:32 pm

Re: HW 9 Results

Run on euler

waveforms.png
waveforms.png (151.5 KiB) Viewed 6501 times


-Shiva Prashant
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f13-759-chada2

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Unread post Mon Nov 18, 2013 8:46 pm

Re: HW 9 Results

Problem 1:
Max N Reduction: 2^26
Time required to reduce Max N: 129.219 ms

Problem 2:
Max N Scan: 2^26
Time required to Scan Max N: 538.118ms

--Shiva Prashant
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