Characterizing the Effects of Intermittent Faults on a Processor for Dependability Enhancement Strategy

Table 9

Detectable symptoms.

(a) Detectable symptoms breakdown for NET (%)

Units	u-architectural group						Propagated group
	u-SDC events					(%)	Non-SDC events	p-SDC events							(%)
	SDC	Detectable symptoms						SDC		Detectable symptoms
	Short	Dead lock	IPacket				Latent	Bad trap	Short	Dead lock	IPacket	IEXE
PKU	0.5	0.9	78.1	79.0	79.6	79.6	17.3			0.8	2.3		3.1	3.1	20.4
AGEN	0.6	2.4	69.4	71.8	72.4	72.4	18.7			0.6	8.3		8.9	8.9	27.6
Decoder	14.1	0.0	53.1	53.1	67.1	67.1	32.1			0.3	0.5		0.8	0.8	32.9
ALU	0.3	0.5	8.4	8.9	9.1	9.1	84.1			1.0	4.1	1.8	6.8	6.8	90.9
IRF	1.3	0.9	24.5	25.4	26.7	26.7	69.0		0.2	1.8	2.4		4.2	4.4	73.3

(b) Detectable symptoms breakdown for REG (%)

Units	u-architectural group						Propagated group
	u-SDC events					(%)	Non-SDC events	p-SDC events							(%)
	SDC	Detectable symptoms						SDC		Detectable symptoms
	Short	Dead lock	IPacket				Latent	Bad trap	Short	Dead lock	IPacket	IEXE
PKU	0.7	71.1	0.7	71.9	72.6	72.6	27.4								27.4
AGEN		14.3		14.3	14.3	14.3	84.8			1.0			1.0	1.0	85.7
Decoder							98.5				0.8	0.8	1.5	1.5	100
ALU							100.0								100
IRF							100.0								100