Question

Why Amdahl Law on serial and parallel fractions does not provide a theoretical speedup of 4 on quad-core CPU?

score 788 · Answer 1 · 2017-01-09 12:02:59

788

Views

Why Amdahl Law on serial and parallel fractions does not provide a theoretical speedup of 4 on quad-core CPU?

Published on 09 January 2017 at 12:02

score 8.9k · Answer 2 · 2013-09-05 01:57:06

8.9k

Views

Working through an example of Amdahl's Law with respect to percentage speedup

Published on 05 September 2013 at 01:57

score 150 · Answer 3 · 2013-12-22 01:20:58

150

Views

Why is a Compare-And-Swap operation limited by Amdahl's law?

Published on 22 December 2013 at 01:20

score 40 · Answer 4 · 2023-12-17 14:39:42

40

Views

Is it legal to use Amdahl's law in the inverse way? How many threads should I use?

Published on 17 December 2023 at 14:39

score 1k · Answer 5 · 2020-11-23 05:58:38

1k

Views

How to parallelize a class method in python?

Published on 23 November 2020 at 05:58

score 1.2k · Answer 6 · 2020-12-07 08:40:04

1.2k

Views

Negative speed up in Amdahl's law?

Published on 07 December 2020 at 08:40

score 192 · Answer 7 · 2022-04-07 11:21:38

192

Views

Evaluating methods in parallel

Published on 07 April 2022 at 11:21

score 803 · Answer 8 · 2022-04-09 21:34:10

803

Views

What is the performance of 100 processors capable of 2 GFLOPs running 2% sequential and 98% parallelizable code?

Published on 09 April 2022 at 21:34

score 34 · Answer 9 · 2022-04-24 11:20:27

34

Views

CPU utilization calculation in Amdahl's law

Published on 24 April 2022 at 11:20

score 96 · Answer 10 · 2018-11-22 08:54:58

96

Views

Is it beneficial to parallelize variable declaration?

Published on 22 November 2018 at 08:54

score 1.1k · Answer 11 · 2022-03-11 12:48:46

1.1k

Views

Why my code runs so much slower with joblib.Parallel() than without?

Published on 11 March 2022 at 12:48

score 699 · Answer 12 · 2022-03-30 16:22:38

699

Views

Very slow example parallel code in python, slower then serial

Published on 30 March 2022 at 16:22

score 102 · Answer 13 · 2017-12-04 11:33:12

102

Views

Does python's Pool() for parallelization prevent writing to global variables?

Published on 04 December 2017 at 11:33

score 2.9k · Answer 14 · 2017-12-01 06:41:08

2.9k

Views

Why python multiprocessing takes more time than serial code? How to speedup this?

Published on 01 December 2017 at 06:41

score 352 · Answer 15 · 2017-12-01 15:41:45

352

Views

RegCM, MPICH, Computer Clustering

Published on 01 December 2017 at 15:41

score 2.1k · Answer 16 · 2017-12-09 13:04:09

2.1k

Views

Why does the get() operation in multiprocessing.Pool.map_async take so long?

Published on 09 December 2017 at 13:04

score 131 · Answer 17 · 2017-12-11 21:31:53

131

Views

Will we see an expected speedup in Chapel if running "inside" VMs?

Published on 11 December 2017 at 21:31

score 258 · Answer 18 · 2017-12-12 13:57:25

258

Views

improving bigint write to disk performance

Published on 12 December 2017 at 13:57

score 179 · Answer 19 · 2017-12-10 20:25:10

179

Views

How non-trivial should a computation be to make it reasonable to get it sparked for a parallel execution in Haskell?

Published on 10 December 2017 at 20:25

score 1.2k · Answer 20 · 2017-12-14 22:47:11

1.2k

Views

cv::parallel_for_ not very big improvement

Published on 14 December 2017 at 22:47

List Question

Why Amdahl Law on serial and parallel fractions does not provide a theoretical speedup of 4 on quad-core CPU?

Working through an example of Amdahl's Law with respect to percentage speedup

Why is a Compare-And-Swap operation limited by Amdahl's law?

Is it legal to use Amdahl's law in the inverse way? How many threads should I use?

How to parallelize a class method in python?

Negative speed up in Amdahl's law?

Evaluating methods in parallel

What is the performance of 100 processors capable of 2 GFLOPs running 2% sequential and 98% parallelizable code?

CPU utilization calculation in Amdahl's law

Is it beneficial to parallelize variable declaration?

Why my code runs so much slower with joblib.Parallel() than without?

Very slow example parallel code in python, slower then serial

Does python's Pool() for parallelization prevent writing to global variables?

Why python multiprocessing takes more time than serial code? How to speedup this?

RegCM, MPICH, Computer Clustering

Why does the get() operation in multiprocessing.Pool.map_async take so long?

Will we see an expected speedup in Chapel if running "inside" VMs?

improving bigint write to disk performance

How non-trivial should a computation be to make it reasonable to get it sparked for a parallel execution in Haskell?

cv::parallel_for_ not very big improvement

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