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Vector performance on a specific situation [message #40131]

Tue, 18 June 2013 09:01

crydev
Messages: 151
Registered: October 2012
Location: Netherlands

Experienced Member

Hello,

I have a question about the Vector's performance in a specific situation. I have a program that utilizes 8 threads on new systems, heavy utilization of paralellism. Say I have a Vector containing 300 items. I split the indexes of those items over 8 threads, meaning the Vector will be accessed from 8 threads simultaniously, but every thread accesses a different item. The same memory location is never modified.

I have read something about Vector cache lines. What is the performance of the U++ implementation of the Vector in this situation? I tried to copy the thread-specific data into arrays and passed them into the functions, but it seems like just as fast.

If there is a better way to do this, I appreciate any suggestions. Smile

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[Message index]

		Vector performance on a specific situation By: crydev on Tue, 18 June 2013 09:01
		Re: Vector performance on a specific situation By: mirek on Tue, 18 June 2013 10:52
		Re: Vector performance on a specific situation By: Novo on Tue, 18 June 2013 19:11
		Re: Vector performance on a specific situation By: crydev on Wed, 19 June 2013 09:03
		Re: Vector performance on a specific situation By: mirek on Wed, 19 June 2013 09:14
		Re: Vector performance on a specific situation By: crydev on Wed, 19 June 2013 09:37

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