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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.

Aptitudini: Programare C

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Despre angajator:
( 0 recenzii ) United States

ID Proiect: #15075564

29 freelanceri licitează în medie 142$ pentru acest proiect

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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 2 zile
(81 recenzii)
7.3
%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(30 recenzii)
6.4
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(95 recenzii)
6.7
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

%bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD în 1 zi
(35 recenzii)
6.1
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 $ Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 2 zile
(83 recenzii)
5.6
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

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(35 recenzii)
5.6
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 Mai multe

%bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD în 1 zi
(65 recenzii)
5.4
%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 2 zile
(53 recenzii)
5.1
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

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(59 recenzii)
5.2
%bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD în 1 zi
(56 recenzii)
5.4
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(34 recenzii)
5.1
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 2 zile
(17 recenzii)
4.4
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 Mai multe

%bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD în 1 zi
(17 recenzii)
4.5
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 5 zile
(18 recenzii)
4.5
kalyanprakash4

Hi, Please chat, i will start work on this immediately. Relevant Skills and Experience c Proposed Milestones $111 USD - Please chat

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(18 recenzii)
4.2
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.. Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(2 recenzii)
4.0
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 2 zile
(6 recenzii)
3.9
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(2 recenzii)
3.0
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(4 recenzii)
3.1
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 Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 3 zile
(5 recenzii)
2.9