what is the difference between processor consistency model and sequential consistency model?
I understand the definition of sequential consistency but I am confused in the following example.
p1: W(x)a
p2: W(x)b
p3: R(x)b R(x)a
p4: R(x)b R(x)a
this system is sequentially consistent
but the following one is not because p3 and p4 are seeing values of x in different order
p1: W(x)a
p2: W(x)b
p3: R(x)a R(x)b
p4: R(x)b R(x)a
So my doubt is here for system to be SC p3 and p4 should be consistent and see same values of x so thats the definition of Processor consistency.
So how PC and SC are different?
consistency
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
add a comment |
I understand the definition of sequential consistency but I am confused in the following example.
p1: W(x)a
p2: W(x)b
p3: R(x)b R(x)a
p4: R(x)b R(x)a
this system is sequentially consistent
but the following one is not because p3 and p4 are seeing values of x in different order
p1: W(x)a
p2: W(x)b
p3: R(x)a R(x)b
p4: R(x)b R(x)a
So my doubt is here for system to be SC p3 and p4 should be consistent and see same values of x so thats the definition of Processor consistency.
So how PC and SC are different?
consistency
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
I'm voting to close this question as off-topic because it is not a practical programming question. Your question might be on topic on cs.stackexchange.com or cstheory.stackexchange.com (but check their rules and expectations before posting)
– Mark Rotteveel
Nov 23 '18 at 16:26
add a comment |
I understand the definition of sequential consistency but I am confused in the following example.
p1: W(x)a
p2: W(x)b
p3: R(x)b R(x)a
p4: R(x)b R(x)a
this system is sequentially consistent
but the following one is not because p3 and p4 are seeing values of x in different order
p1: W(x)a
p2: W(x)b
p3: R(x)a R(x)b
p4: R(x)b R(x)a
So my doubt is here for system to be SC p3 and p4 should be consistent and see same values of x so thats the definition of Processor consistency.
So how PC and SC are different?
consistency
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
I understand the definition of sequential consistency but I am confused in the following example.
p1: W(x)a
p2: W(x)b
p3: R(x)b R(x)a
p4: R(x)b R(x)a
this system is sequentially consistent
but the following one is not because p3 and p4 are seeing values of x in different order
p1: W(x)a
p2: W(x)b
p3: R(x)a R(x)b
p4: R(x)b R(x)a
So my doubt is here for system to be SC p3 and p4 should be consistent and see same values of x so thats the definition of Processor consistency.
So how PC and SC are different?
consistency
consistency
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
asked Nov 23 '18 at 16:21
Bhupinder KaurBhupinder Kaur
61
61
I'm voting to close this question as off-topic because it is not a practical programming question. Your question might be on topic on cs.stackexchange.com or cstheory.stackexchange.com (but check their rules and expectations before posting)
– Mark Rotteveel
Nov 23 '18 at 16:26
add a comment |
I'm voting to close this question as off-topic because it is not a practical programming question. Your question might be on topic on cs.stackexchange.com or cstheory.stackexchange.com (but check their rules and expectations before posting)
– Mark Rotteveel
Nov 23 '18 at 16:26
I'm voting to close this question as off-topic because it is not a practical programming question. Your question might be on topic on cs.stackexchange.com or cstheory.stackexchange.com (but check their rules and expectations before posting)
– Mark Rotteveel
Nov 23 '18 at 16:26
I'm voting to close this question as off-topic because it is not a practical programming question. Your question might be on topic on cs.stackexchange.com or cstheory.stackexchange.com (but check their rules and expectations before posting)
– Mark Rotteveel
Nov 23 '18 at 16:26
add a comment |
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I'm voting to close this question as off-topic because it is not a practical programming question. Your question might be on topic on cs.stackexchange.com or cstheory.stackexchange.com (but check their rules and expectations before posting)
– Mark Rotteveel
Nov 23 '18 at 16:26