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Accelerate C code

I want you to optimize the C code attached.

If you want this project, and before I give it to you, and *before I pay* you, you will have to

(1) download the file,

(2) optimize it, only pure C allowed, no C++, keeping the name of the variable as close as possible to the original code and making sure the optimized code produces the same output

(3) send me a chat message with what speedup you can achieve for inputs of different sizes and different levels of optimization (O1, O2, O3)

(4) if I believe and like your speedup, I will then, and only then, pay you in full

*After* I pay you, you will send me your code, a single file in pure C, no C++ If it does not meet the speedup claim you claimed in (3), then I will dispute the quality of your work and ask freelancer for a reimbursement.

Færdigheder: C programmering

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Om arbejdsgiveren:
( 0 bedømmelser ) United States

Projekt-ID: #15075564

31 freelancere byder i gennemsnit $147 for dette job

super2lao

Familiar interface and simple algorithm encourage your work. Languages: Objective C , Swift , PHP, Java, SQL, HTML, CSS, JavaScript, C, C++, C#,Python Web Frameworks: Laravel , Wordpress , CodeIgniter, Zoomla Dat Mere

$147 USD in 2 dage
(54 bedømmelser)
7.0
hbxfnzwpf

I am very proficient in c and c++. I have 16 years c++ developing experience now, and have worked for more than 6 years. My work is online game developing, and mainly focus on client side, using c++ under windows envir Mere

$120 USD in 3 dage
(82 bedømmelser)
6.6
$155 USD in 3 dage
(27 bedømmelser)
6.1
LiangXiaoJin

I read your post and checked your code carefully. No problem. Let's do. How much speedup you want? Relevant Skills and Experience C Programming, Code Optimazation Proposed Milestones $300 USD - completion

$120 USD på 1 dag
(34 bedømmelser)
6.0
wangbeizou

Hello. I saw your description. This is opimization for c code. Relevant Skills and Experience Im exert in Data structure and Algorithm. I know well C . I'll do it in C. Im interested this task, Proposed Milestones $ Mere

$105 USD in 2 dage
(68 bedømmelser)
5.5
iridescent2x15

I m software engineer. I have read the description and I would like to work for you. For further details please inbox me. Thank you Relevant Skills and Experience C Proposed Milestones $250 USD - m

$250 USD in 3 dage
(26 bedømmelser)
5.2
rostovsoft

I've generaly got 3.8 - 4.2 times speed up for O1 optimization and 2.4 - 2.7 times speed up for both O2 and Ox optimization. Also fixed heap-corruption bug (lines 70 and 73) Relevant Skills and Experience I have stron Mere

$111 USD in 3 dage
(29 bedømmelser)
5.0
harshdaga

Hi, I've got quite some experience with C and I'm sure I can help you out with your program. May I get more details over the chat? Relevant Skills and Experience C, ASM Proposed Milestones $100 USD - Completion

$100 USD in 3 dage
(43 bedømmelser)
4.9
$100 USD in 2 dage
(51 bedømmelser)
5.0
$100 USD på 1 dag
(29 bedømmelser)
4.7
koustav2006

hi..i have already optimized the code and re written three versions of the code for three optimization level and getting fair results. Relevant Skills and Experience over 10 years of C/C++ programming. Proposed Miles Mere

$70 USD på 1 dag
(33 bedømmelser)
4.9
hectorenavarrou

Hi, I downloaded the file, and did some changes. Ran it with width = 1000000, and got from 1.28s to 0.65s (O1 and O2), and from 1.07s to 0.54s (O3), using cygwin's gcc running on a i7 processor. Relevant Skills and Ex Mere

$130 USD på 1 dag
(17 bedømmelser)
4.4
danale72

I played with the function S_TIV and foun dout that ~75% of execution time runs lines ##96 & 119 of the original file. After some modification I got reduced execution time 10%.From 5.2 to 4.6 sec Relevant Skills and E Mere

$50 USD in 5 dage
(18 bedømmelser)
4.5
michaelroy66

[EDIT2] I have also located and fixed the out of bounds error. Difference between outputs between your code and mine, which is 59% faster is in the -110dB range for 10000 samples, and -120dB for 1,000,000 samples.. Mere

$222 USD in 3 dage
(2 bedømmelser)
4.0
progcgstar

I am a c++,c#, java, android expert. I'm experienced, skillful and enthusiastic enough finish ur project wonderfully. I'm always ready for u. Regards. I read your requirements and I accept all of them.. Please contact Mere

$100 USD in 2 dage
(4 bedømmelser)
3.5
schoudhary1553

Greetings sir, i am an expert freelancer for this job and your 100% satisfaction is assured if you allow me to serve. I can do this task as per your requirement Relevant Skills and Experience I have the 5 years of Mere

$180 USD in 2 dage
(4 bedømmelser)
3.7
alexshi

Optimize c program Relevant Skills and Experience Rich experience in data structure and algorithm optimization. I have downloaded the file and read it, however if you can describe the purpose of the calculation, it's Mere

$250 USD in 3 dage
(2 bedømmelser)
3.0
MounirEnmeiRyuu

I'm an Engineer and a PhD in algorithm designs & optimization, I've wide experience in optimizing pieces of code by adapting the used algorithm to better hardware usage by the processor/compiler. Relevant Skills and E Mere

$161 USD in 3 dage
(5 bedømmelser)
2.8
$244 USD in 3 dage
(7 bedømmelser)
3.6
khurram4225

Hi there, Hope you are doing great. We will make your your C programming work done within your given deadline. Thanks Relevant Skills and Experience Bundle of experiences we can share with you. Proposed Milestones $1 Mere

$150 USD in 3 dage
(3 bedømmelser)
2.4