Memory Optimization of C / OpenCL Code

$250-750 USD

Closed

Posted

over 10 years ago

$250-750 USD

Paid on delivery

This is probably a very simple project for someone with an excellent knowledge of C and OpenCL. That, however, is not me! The code in question performs various operations in GPU memory. I am fairly sure that the memory is not being allocated / written to etc in an optimal way as it uses clCreateBuffer (no pinned memory) -> clEnqueueWriteBuffer and clFinish rather than what I think is the more efficient clCreateBuffer (pinned memory, written to in one command). It's hard to say much more than that as I only have a slight understanding of what I'm talking about. The code starts working at a very fast rate but then bogs down shortly afterwards, and I think that this is due to inefficient and/or slow use of memory. I would prefer to work with a developer in the U.S. for ease of phone communications if necessary.

C Programming

OpenCL

Project ID: 5353493

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6 proposals

Remote project

Active 10 yrs ago

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6 freelancers are bidding on average $562 USD for this job

@renardpaul

Hello, expert in GPU programming (OpenCL and CUDA) here. I can help with optimizing your OpenCL code. Thanks, Paul

$750 USD in 14 days

4.9

(59 reviews)

5.9

@MilanDz

Hello, I am Milan, and I am from Serbia. I understand that you need help with the C and OpenCL code, memory management in particular. I am currently finishing my master thesis that is based on comparison of hardware acceleration techniques with OpenCL being one of those. The point of the thesis is to find the fastest possible way of accelerating an application. I know that memory transfers are the bottleneck of these types of applications and I can help you with getting the best performance out of your kernels. I am also an assistant on the University, and I have a lot of experience in C/C++ and OpenCL or/and CUDA. I must see the code so I can tell you in details how will I change it; maybe there is some room for changes in the kernels or the work items/local groups management. Last of all I can probably finish the work even faster than 5 days but just to make sure. If you have any questions please don't hesitate to contact me. Kind regards, Milan

$555 USD in 5 days

0.0

(0 reviews)

0.0

@ctan2011

一个有效的提议尚未被提供

$500 USD in 9 days

0.0

(0 reviews)

0.0

@photonzephyr

So you basically want to change the code to use pinned memory, with the opencl buffer mapped to a pointer to increase performance/prevent bottlenecks? I am in the US as well, however I generally only work through freelancer if that is ok. Thank you and I look forward to working with you.

$400 USD in 7 days

0.0

(1 review)

0.0

@therealcy6

I was lead programmer for a game company in Dallas, and I wrote nearly all of our GPU bound code... We write a tiled lighting system completely in OpenCL, and our game was written from scratch in c++. I also wrote most of our data structures like lists, maps, and thread safe queues in c. I am available to work on this now, and depending on how much code it is, think it should take a couple days to complete the optimization pass.

$333 USD in 2 days