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- Seeking advice on new CPU purchase for MKL band matrix LU

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hareson

Beginner

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09-27-2012
12:41 AM

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Seeking advice on new CPU purchase for MKL band matrix LU

Hi All

I would like to improve the performance of the LU decomposition speed on my desktop by buying more CPU power. However, I don't know how I should weigh in things like clock speed vs. numbers of cores etc.

**The** **problem:** LU decomposition and solving for 1 solution of a NxN band matrix, where N is between 10^5 to 10^6, and the band is about 1000. I use the *cgbtrf* function for the LU.

**CPUs:**

I have been thinking of buying two Intel Xeon E5 using the LGA2011 socket for a dual CPU system. However, the price for clock-speed makes the "bang per bucks = total clocks * cores / $US" largest if I choose, say, the 2620 CPU compared to a 2643 or a 2640.

However, I am also aware that the problem will scale linearly by that metric, so I was wondering if anyone could offer some insight into this problem.

Thank you all for your time

Henrik Andresen

2 Replies

TimP

Black Belt

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09-27-2012
07:46 AM

33 Views

hareson

Beginner

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09-27-2012
11:56 PM

33 Views

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