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Date: Sat, 3 Mar 2018 15:27:55 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: Getting full performance out of multiple GPU's

On 2018-03-03 15:15, Piotr Dobrogost wrote:
> On Sat, Mar 3, 2018 at 1:11 PM, Solar Designer <solar@...nwall.com> wrote:
>> GPU memory utilization may
>> vary depending on actual needs - there's no universally correct/expected
>> level of GPU memory utilization.
> 
> True but still you expected near 100% and I think it's reasonable
> expectation.

No, it's not. For illustrative purposes, let's say you have a dream GPU 
with 128 GB memory and you need to crack a single hash that need about 1 
billionth of that. How/why would we "utilize" the rest of your memory, 
and in what way do you picture it would be a good thing!?

Your GPU utilization though, should ideally be pegged very close to 100% 
and that's the only important parameter here.

magnum

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