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Tag: each

R Parallel, will you create a new cluster every time you use Parallel Apply?

I use the parLapply function on 20 cores. I think other functions such as parSapply are the same…

First, pass a cluster as a parameter Is it bad practice to give a function so that the func

October 1, 2021By Simo Load Balance apply, cluster, each, New, parallel, time, use, willLeave a Comment

RAID1: A RAID or partition on each partition on RAID device?

What is more suitable for ordinary servers:

>Multiple partitions, which are bundled into multiple RAID1 devices (/dev/md0,/dev/md1, …), there is no unmirrored partition.
>A big /dev/md0, and

September 25, 2021By Simo Storage each, one, partition, RAID, raid1Leave a Comment

RAID – How to combine 2 controllers in HP DL370 G6 (6 brackets)

I have a server DL370 G6, as shown below, I want to install Windows Server 2008 E. We are using it for camera recording. Each slot has 6 2 TB hard drives.

I want to merge them into Raid 1 for

September 25, 2021By Simo Storage Bracket, controller, DL, DL370, each, G6, HP, Merge, Meta, RAIDLeave a Comment

How many data have each node in the NOSQL – Cassandra cluster?

When do the boundaries of SSTables compression (primary and secondary) become invalid?

If I have the main compression of 500G SSTables and my final SSTable will exceed 1TB-is this effective f

September 21, 2021By Simo Nosql Cassandra, cluster, data, each, how much, Medium, Node, NOSQLLeave a Comment

Mono a function for each updated row in PostgreSQL

I have a sql UPDATE statement in the plpgsql function. I now want to call the pg_notify function for each updated row, and am not sure if my solution is the best possibility.

I don’t know whe

September 21, 2021By Simo Postgresql call, each, function, in, one, PostgreSQL, Row, updatedLeave a Comment

C – OpenCV: Handling Each Frame

I want to write a cross-platform application that uses OpenCV for video capture. In all the examples, I found using the grab function to process the frames from the camera and wait for a while. I w

August 22, 2021By Simo C & C++ each, frame, OpenCV, ProcessingLeave a Comment

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