清空筛选条件
清空筛选条件

how many workers can I use in parallelization?

183 次查看（过去 30 天）
Chang seok Ma
Chang seok Ma 2021-11-23
回答： Kojiro Saito 2021-11-24
Hello, I am trying to use parallelization and I have one quick question.
I saw another post saying that 'I saw from another post saying that 'All releases newer than R2013b can utilize up to 512 workers (CPU cores) on a local machine through the Parallel Computing Toolbox'
However, I am not sure how many workers I can use with my computer.
I have 32 cores(64 logical cores) and 128 GB of memory.
Does this mean I can use 32 number of workers? or can I use 64 number of workers since I have 64 logical cores?
Or is 'number of workers' something independent from the number of cores?
In the Parallel preferences, I think I can write any number I want as a number of workers so I am bit confused....
Thanks in advance.
Edit. I put 36 as a number of workers in 'Parallel preferences' but when I run the code, it says the number of workers are 32. So I guess Matlab automatically choose the maximum number of workers....?

请先登录，再回答此问题。

采纳的回答

Kojiro Saito
Kojiro Saito 2021-11-24
You need to change the NumWokers property from Cluster Profile.
From "Parallel" -> "Create and Manage Clusters",
change the NumWorkers value to 64 because by default, it is the number of physical CPU cores.
Or, you can change from command line.
First, create a cluster object by parcluster, then change the NumWorkers to 64.
c = parcluster;
c.NumWorkers = 64;
% Do parpool or parfor etc.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Parallel Computing Fundamentals 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by