[TechGage] AMD’s Radeon VII GPU Will Not Support Uncapped Double-Precision (FP64) - Page 5 - Overclock.net - An Overclocking Community

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[TechGage] AMD’s Radeon VII GPU Will Not Support Uncapped Double-Precision (FP64)

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post #41 of 49 (permalink) Old 01-18-2019, 08:01 AM
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Quote: Originally Posted by Offler View Post
Wild guess (based on 10k/s and 12 digit PW o a ZIP file) ... 6-8 seconds or less.
My maths is pretty bad, but would the calculation not be 36^8 attempts? (For an 8-character alphanumerical password). If it's guessing 60 thousand times a second, then it's going to take like a year and a half, no?

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post #42 of 49 (permalink) Old 01-18-2019, 09:01 AM
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Quote: Originally Posted by steelbom View Post
My maths is pretty bad, but would the calculation not be 36^8 attempts? (For an 8-character alphanumerical password). If it's guessing 60 thousand times a second, then it's going to take like a year and a half, no?
Actually, it should be something like 70^8 alphanumerical with special symbols.

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post #43 of 49 (permalink) Old 01-18-2019, 09:11 AM
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Quote: Originally Posted by fragamemnon View Post
Actually 1:8 FP64 isn't that bad.
It certainly could have been worse, but still pales compared to HD 7970/R9 280X.
HD 7970 is 1 TFLOP FP64


1/8th of a 12 or 13 TFLOP FP32 is still at least 60% faster.


However, the GTX TITAN Black (Kepler) was 1/3 FP64 and it resulted in higher than this prospective VEGA 7nm.
It's also slower than the Firepro W8100 (~2 TFLOPs FP64).

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post #44 of 49 (permalink) Old 01-18-2019, 09:12 AM
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Quote: Originally Posted by steelbom View Post
My maths is pretty bad, but would the calculation not be 36^8 attempts? (For an 8-character alphanumerical password). If it's guessing 60 thousand times a second, then it's going to take like a year and a half, no?
I assumed you know amount of digits in the password.

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post #45 of 49 (permalink) Old 01-18-2019, 02:01 PM
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Quote: Originally Posted by AlphaC View Post
HD 7970 is 1 TFLOP FP64


1/8th of a 12 or 13 TFLOP FP32 is still at least 60% faster.


However, the GTX TITAN Black (Kepler) was 1/3 FP64 and it resulted in higher than this prospective VEGA 7nm.
It's also slower than the Firepro W8100 (~2 TFLOPs FP64).

Perhaps I should have clarified that I was talking about the single/double precision ratio. Sorry

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post #46 of 49 (permalink) Old 01-18-2019, 03:34 PM
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Quote: Originally Posted by ku4eto View Post
Actually, it should be something like 70^8 alphanumerical with special symbols.
Yep that's going to take way longer.
Quote: Originally Posted by Offler View Post
I assumed you know amount of digits in the password.
Yeah, if you don't it'll even longer.

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post #47 of 49 (permalink) Old 01-19-2019, 03:13 AM
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Quote: Originally Posted by steelbom View Post
Yep that's going to take way longer.

Yeah, if you don't it'll even longer.
Thats why you use Dictionary words first (there is a thing known as Rainbow tables), and use passwords, from hacked websites. Its alot faster first to check with those, and then with any pseudo-random/random password matches for each hash.

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post #48 of 49 (permalink) Old 01-19-2019, 03:55 AM
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Quote: Originally Posted by ku4eto View Post
Thats why you use Dictionary words first (there is a thing known as Rainbow tables), and use passwords, from hacked websites. Its alot faster first to check with those, and then with any pseudo-random/random password matches for each hash.
I'm know nothing about code but I know there are mGPU rigs capable of getting passwords in very short order.

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post #49 of 49 (permalink) Old 01-19-2019, 07:20 AM
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Quote: Originally Posted by ku4eto View Post
Thats why you use Dictionary words first (there is a thing known as Rainbow tables), and use passwords, from hacked websites. Its alot faster first to check with those, and then with any pseudo-random/random password matches for each hash.

true, plus theres also tables of commonly used character combinations, otherwise L33T wouldn't be in wiki.

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