Edric Ellis
MathWorks
Followers: 0 Following: 0
Developer at MathWorks, working on Parallel Computing Toolbox. Professional Interests: parallel computing, distributed arrays, gpu
統計
Your submissions received 5 five star ratings
Awarded to Edric Ellis on 09 Jun 2020
Your submissions were downloaded 10 or more times in a month
Awarded to Edric Ellis on 01 Nov 2019
Publish your first review
Awarded to Edric Ellis on 09 Oct 2019
Publish your first submission
Awarded to Edric Ellis on 09 Oct 2019
Contribute at least one answer each month for 36 consecutive months
Awarded to Edric Ellis on 20 Jul 2017
Accept 1 answer given by other contributors
Awarded to Edric Ellis on 20 Jul 2017
Answer 3 questions that were unanswered for more than 30 days
Awarded to Edric Ellis on 20 Jul 2017
100 of your answers have been accepted
Awarded to Edric Ellis on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Edric Ellis on 20 Jul 2017
Solve a problem for the first time
Awarded to Edric Ellis on 08 Feb 2012
Feeds
How to output variables properly from a parfor loop
For your first case, you could use a parfor "reduction variable". Like this: loops = 10000000; b = []; parfor ii = 1:loops ...
2日 前 | 0
Parallel tool (parfor) and COM objects
The general approach to fixing cases where a variable is needed inside parfor, but cannot be directly sent there, is to use para...
2日 前 | 0
Problem working with parfor
That stack frame in the profiler is simply where your MATLAB client is waiting for the workers to complete their work. You can g...
2日 前 | 0
| 採用済み
Updating a parallel.pool.Constant within a parfor loop
You can't directly update the Value of a parallel.pool.Constant inside a parfor loop - not least because the parfor constraints ...
3日 前 | 0
| 採用済み
Interference in parfor when using global variables
Separate workers have their own completely separate global workspaces. If the function that you call from parfor first assigns a...
15日 前 | 0
Parsing files and computing in parfor - GA
When working with a remote cluster parpool, usually Parallel Computing Toolbox is able to work out automatically which files nee...
約1ヶ月 前 | 0
Parallelize cumulative average algorithm
You can use a parfor "reduction variable" to compute this, with a slight modification which may or may not be significant: dat ...
約1ヶ月 前 | 0
| 採用済み
doubts about parfeval memory allocation
If the entire dataset only just fits in memory once, then a better option than readall might be to use partition on the datastor...
約2ヶ月 前 | 0
| 採用済み
Error Implementing parfor while creating satellite objects
I'm guessing you are trying to use this with a thread-based parallel pool. I had to add a line to your code to make it work, nam...
約2ヶ月 前 | 0
| 採用済み
Why is it not possible to pass matrix parameters as argument to GPU arrayfun and what to do?
It would be great to see a simplified example of what you're trying to do. What you can do with gpuArray/arrayfun is write a nes...
約2ヶ月 前 | 1
| 採用済み
terminate program if worker aborts in parallel loop
If you create your parpool using the option SpmdEnabled=true, then this has the side-effect of making parallel pools terminate c...
約2ヶ月 前 | 0
| 採用済み
How is the work distributed in parfor loop?
If you know in advance which iterations are the time-consuming ones, then you could consider running those together as a separat...
2ヶ月 前 | 1
| 採用済み
How can I debug a parallel script with spmd?
Unfortunately you cannot set breakpoints in code running on workers. If the problem is related to the messages you are sending u...
3ヶ月 前 | 0
how parfor distributes resources to each iteration if the number of cores is larger than the number of iterations
When a parfor loop executes on a parallel pool, PCT will divide up the entire loop range 1:N into a series of batches known as "...
3ヶ月 前 | 3
bug parfor: analyzing and transferring files to worker: not done: blocked
The "analyzing and transferring files to workers" message occurs only when the workers encounter a failure to find some code tha...
3ヶ月 前 | 0
parpool use existing slurm job
Further to @Venkat Siddarth Reddy's suggestion, what you might want to do is something like this: clus = parcluster('mySlurmPro...
3ヶ月 前 | 0
Store intermediate results of cost function when solver is run in parallel
You could use a parallel.pool.PollableDataQueue to let the workers send the data to the client. The idea is that you create the ...
4ヶ月 前 | 0
| 採用済み
"Invalid or deleted object" when using clib object in parfor loop
I'm not terribly familiar with clibgen I'm afraid, but I think the problem here is almost certainly that the function myCppFunct...
4ヶ月 前 | 2
| 採用済み
MATLAB workers can't access files in network shared folder
You could try using FileStore for this. You'll first need to save your figure to a temporary location on disk, and then you can ...
4ヶ月 前 | 0
| 採用済み
Running parfor on multiple nodes (20 nodes = 960 cores) using Slurm (super computer)
To run across multiple nodes of a cluster, you need to set up MATLAB Parallel Server on the cluster. You might well need help fr...
4ヶ月 前 | 1
Parallelization data organization/transfer
parfor is designed to "just work" for a wide range of cases, but it's true that sometimes you need a bit more control. parforOpt...
5ヶ月 前 | 0
Access Violation Detected MatLAB
That crash dump clearly implicates your MEX file octtrees.query_index_moct. One of the common pitfalls when running MEX files in...
5ヶ月 前 | 0
Is it possible to run multiple lines at once in a Matlab script?
To expand just a little on @Stephen23's comment - you can do this if you have Parallel Computing Toolbox. You should first restr...
5ヶ月 前 | 1
| 採用済み
CNN Performance: CPU Consistency vs. GPU Variance - Why?
I'm not certain if it will make everything consistent, but note that random state on the GPU is controlled by the gpurng functio...
5ヶ月 前 | 0
Parfor with options = statset('UseParallel',true);
If you are able to "flatten" the parallelism so that it is all exposed to a single parfor loop with enough iterations to keep al...
5ヶ月 前 | 0
| 採用済み
Is it possible to use parfeval and backgroundPool to write to a Mongo database in a background thread?
In your first case using parfor, if you haven't changed any settings, you will be using a process pool. (The default profile is ...
5ヶ月 前 | 0
Avoid memory copy in thread-based environment (parfeval)
In this case, thread-based workers already avoid copying the large array m to the workers. See this section in the doc. Note tha...
5ヶ月 前 | 2
| 採用済み
How to assign values to arrays inside the PARFOR loop in Parallel Computing Toolbox?
To assign into A here, you need to follow the rules of sliced variables in parfor. In this case, you need to modify your code to...
7ヶ月 前 | 1
| 採用済み
Is there a parallel version of splitapply()?
tall arrays support parallel execution of splitapply. Would that work for your case?
7ヶ月 前 | 0
| 採用済み
How do you organize data from a parfor loop?
You can do this more directly by flattening the parfor loop, and using a combination of ind2sub and reshape. The idea is as foll...
11ヶ月 前 | 0
また、以下のリストから Web サイトを選択することもできます。
南北アメリカ
- América Latina (Español)
- Canada (English)
- United States (English)
ヨーロッパ
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)
アジア太平洋地域
- Australia (English)
- India (English)
- New Zealand (English)
- 中国
- 日本Japanese (日本語)
- 한국Korean (한국어)