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  4. Parity-based Error Detection with Recomputation for Fault-tolerant Spaceborne Computing
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00106056-15

Parity-based Error Detection with Recomputation for Fault-tolerant Spaceborne Computing

Veröffentlichungsdatum
2017-08-10
Autoren
Aydos, Gökçe  
Betreuer
Fey, Görschwin  
Gutachter
Raik, Jaan  
Zusammenfassung
In radiation environment (e.g., space, nuclear reactor), electronics can fail due to bitflips in the flipflops of integrated circuits. A common solution is to triplicate the flipflops and connect their outputs to a voter. If one of the three bits is flipped, then the voter outputs the majority value and tolerates the error. This method is called triple modular redundancya (TMR). TMR can cause about 300% area redundancy. An alternative way is error detection with on-demand recomputation, where the recomputation is done by repeating the failed processing request to the processing circuit. The computation is done in consecutive transactions, which we call transaction-based processing. We implemented and evaluated the aforementioned alternative approach using parity checking on the Microsemi ProASIC3 FPGA, which is often used in space applications. The results show that parity-based error detection with our system recovery approach can save up to 54% of the area overhead that would be caused by the TMR, and achieve in most circuits slightly better timing results than TMR on ProASIC3. This area saving can be the key for fitting the application to a space-constrained chip.
Schlagwörter
error detection-based fault-tolerance

; 

error detection

; 

digital circuit

; 

FPGA

; 

fault-tolerance

; 

dependability

; 

safety

; 

ProASIC3

; 

bitflip

; 

space

; 

parity

; 

dissertation

; 

cross layer

; 

transaction-based processing

; 

triple modular redundancy

; 

TMR

; 

local triple modular redundancy

; 

LTMR

; 

parity-based error detection

; 

PBED
Institution
Universität Bremen  
Fachbereich
Fachbereich 03: Mathematik/Informatik (FB 03)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00106056-1.pdf

Size

1.32 MB

Format

Adobe PDF

Checksum

(MD5):5efce602b68f63838a025b4d10e39a0d

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