Date: Wed, 12 Aug 2020 06:54:55 +0200 From: Johny Krekan <krekan@...nykrekan.com> To: john-users@...ts.openwall.com Subject: Re: Performance of 5 days demo of the cloud which was mentioned in the message with subject John in the cloud Hello, Those details are important for me:-) You mentione the speed s in c/s . C/s means password/sec? What do you think could be speed of one p3.2xlarge instance? (wpa password /sec) What would be a price of one such instance for example for one day? Thanx for info Johny Krekan Dňa 11. 8. 2020 o 16:58 Solar Designer napísal(a): > Hi Johny, > > Performance varies between AWS instance types a lot. On the new "John > the Ripper in the cloud" homepage there's a screenshot (now with ALT tag > giving more detail) showing a p3.2xlarge instance's NVIDIA Tesla V100 > GPU achieve ~27M c/s at md5crypt-opencl for "Many salts". That's a very > good speed, but this instance currently costs $3.06/hour on-demand or > $0.918+/hour spot, plus $0.64/hour for our Bundle (beyond our 5-day free > trial). You appear to be asking about cheaper/free instances, so for > comparison a t2.nano (the smallest instance they have) achieves ~70k > short-term at md5crypt for $0.006/hour and a t2.micro achieves the same > (but has more RAM) for $0.012/hour on-demand or currently $0.0035+/hour > spot. These tiny instances are also free for the first year for new AWS > users, and we don't charge for usage of our Bundle on those. > > So by using these tiny instances, you could get something like 0.26% of > the performance of our recommended instance type, but it's free or > cheap, and in absolute terms (not relative to a high-end GPU) the speed > might just be sufficient for some focused attacks or detection of the > weakest passwords. Those tiny instances would also fare relatively > better for hash types that are GPU-unfriendly (e.g., bcrypt) or for > which there's no GPU support yet. > > For WPA PSK in particular, I am getting 2200 to 2300 c/s short-term on > either t2.nano or t2.micro. > > But there's a catch: > > Performance on these tiny instances might become lower with long-term > 100% CPU load unless a paid option called "T2/T3 Unlimited" is enabled. > Without that option, t2.nano's performance reduces to 5% and t2.micro's > to 10% of original in my longer benchmark runs. Specifically, I get > only 214 c/s long-term at WPA PSK on t2.micro without "T2/T3 Unlimited". > > Some of my tests on t2.nano fail because its 0.5 GB RAM is too little, > but many other tests work. I recommend at least t2.micro with its 1 GB. > > You obviously need larger instances for serious usage, but these tiniest > ones are suitable for some educational uses (such as learning how to run > a password cracker on AWS at all). > > 5 days free trial applies to our software only, and only for larger > instances (on these tiny ones, our software is free without a time > limit). If you're new to AWS and choose one of these tiniest instances, > as I understand you can use it for free for the first year since your > AWS account creation. If you're no longer eligible (have an old AWS > account) or use larger AWS instances, you need to pay for their usage > (and there's no free trial for that). > > The prices I mentioned here are for instances in a US region and for an > AWS account with a certain US billing address. There might be sales tax > or VAT added depending on choice of region and/or billing address. > > I hope this isn't too much detail for you. > > Alexander > > On Tue, Aug 11, 2020 at 02:42:50PM +0200, Johny Krekan wrote: >> Hello, I would like to ask what is the estimated performance of the >> cloud (like passwords/second for example for WPA PSK hashes). >> >> Five days means that one user who is testing this cloud will have some >> hardware resources remotely at his disposal for 120 hours? >> Thanx for info >> Johny Krekan
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