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Lazy FPU state leak (CVE-2018-3665), also referred to as Lazy FP State Restore [1] or LazyFP, [2] [3] is a security vulnerability affecting Intel Core CPUs. [1] [4] The vulnerability is caused by a combination of flaws in the speculative execution technology present within the affected CPUs [1] and how certain operating systems handle context switching on the floating point unit (FPU). [2]
When a server running NPS is a member of an Active Directory Domain Services (AD DS) domain, NPS uses the directory service as its user account database and is part of a single sign-on solution. The same set of credentials is used for network access control (authenticating and authorizing access to a network) and to log on to an AD DS domain.
A floating-point unit (FPU), numeric processing unit (NPU), [1] colloquially math coprocessor, is a part of a computer system specially designed to carry out operations on floating-point numbers. [2] Typical operations are addition , subtraction , multiplication , division , and square root .
Thus, only 10 bits of the significand appear in the memory format but the total precision is 11 bits. In IEEE 754 parlance, there are 10 bits of significand, but there are 11 bits of significand precision (log 10 (2 11 ) ≈ 3.311 decimal digits, or 4 digits ± slightly less than 5 units in the last place ).
The story first appeared in the press on November 7, 1994, in an article in Electronic Engineering Times, "Intel fixes a Pentium FPU glitch" by Alexander Wolfe, [11] and was subsequently picked up by CNN in a segment aired on November 22. It was also reported on by the New York Times and the Boston Globe, making the front page in the latter ...
Bulldozer is the first major redesign of AMD’s processor architecture since 2003, when the firm launched its K8 processors, and also features two 128-bit FMA-capable FPUs which can be combined into one 256-bit FPU. This design is accompanied by two integer clusters, each with 4 pipelines (the fetch/decode stage is shared).
A10 (Cobra), 50–77 MHz, 1995, single chip processor for Series i; A25/30 (Muskie), 125–154 MHz, 1996, multi chip, 4 way SMP for Series i; RS64 (Apache), 64-bit, 125 MHz, 1997 for large scale SMP systems Series i and Series p
Two Sun Neptune 10 Gigabit Ethernet ports (embedded into the T2 processor) with packet classification and filtering L2 cache size increased to 4 MB (8-banks, 16-way associative) from 3 MB Improved thread scheduling and instruction prefetching to achieve higher single-threaded performance