8,886 research outputs found
Criticality Aware Soft Error Mitigation in the Configuration Memory of SRAM based FPGA
Efficient low complexity error correcting code(ECC) is considered as an
effective technique for mitigation of multi-bit upset (MBU) in the
configuration memory(CM)of static random access memory (SRAM) based Field
Programmable Gate Array (FPGA) devices. Traditional multi-bit ECCs have large
overhead and complex decoding circuit to correct adjacent multibit error. In
this work, we propose a simple multi-bit ECC which uses Secure Hash Algorithm
for error detection and parity based two dimensional Erasure Product Code for
error correction. Present error mitigation techniques perform error correction
in the CM without considering the criticality or the execution period of the
tasks allocated in different portion of CM. In most of the cases, error
correction is not done in the right instant, which sometimes either suspends
normal system operation or wastes hardware resources for less critical tasks.
In this paper,we advocate for a dynamic priority-based hardware scheduling
algorithm which chooses the tasks for error correction based on their area,
execution period and criticality. The proposed method has been validated in
terms of overhead due to redundant bits, error correction time and system
reliabilityComment: 6 pages, 8 figures, conferenc
Half-Monopole in the Weinberg-Salam Model
We present new axially symmetric half-monopole configuration of the
SU(2)U(1) Weinberg-Salam model of electromagnetic and weak
interactions. The half-monopole configuration possesses net magnetic charge
which is half the magnetic charge of a Cho-Maison monopole. The
electromagnetic gauge potential is singular along the negative -axis.
However the total energy is finite and increases only logarithmically with
increasing Higgs field self-coupling constant at
. In the U(1) magnetic field, the half-monopole is just
a one dimensional finite length line magnetic charge extending from the origin
and lying along the negative -axis. In the SU(2) 't Hooft magnetic
field, it is a point magnetic charge located at . The half-monopole
possesses magnetic dipole moment that decreases exponentially fast with
increasing Higgs field self-coupling constant at
.Comment: 14 pages, 3 Figure
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