P P P 0 1 2 3 4 5 6 7 8 9 10 12 14 11 13 15 P .edu
9SV8V5(`$EC?A@C8AC0WT8%Af)@1?E?)TCC&AT0bF5X91I1?A'6aA'5AfE2@%E0aC%SCA8A?8@b%?YS9G(?5P1'(CE@%EAE8A4?C)c9)S5CIT5A0?908YI@E51dIP1@7H62SCHD2831T?3IAA7UC4H459b@AT6TH8EU9&@Q56IASTI88'56@HC@05@7IIHT51@PT58A859@b8P@98EA6@PC9aA8P4ES8@07E57'Eb8!PAW9AE15QB9E)%DUA8I@F1c59CQ'8ADRC%C7'"95FA8WACAA9#(UA)A6CTA8I17e)@E7'5U058%5AE1A6@@@862PEAaC8PE@9@P7%eE8@A9'8@ASHC5EAR5@CPSEAA99
gggmkkqmhhhneiiienihhxuipxoeopvqsrvvewfwwrxeysstrslrxtxyyyounfysxjwperrezexkq|qwwqvyvwwsxqsvdxrose|yynrtwqyxrswetovfiulssqfv{swxxdttfxistnsegxuepvwserjyfh
P0
P1
P2
P3
0 1 2 3 4 5 6 7 8 9 10 12 14 11 13 15
Column-wise block striping
0 4 8 12 1 5 9 13 2 6 10 14 3 7 11 15
Row-wise cyclic striping
P0 P1 P2 P3
P0
P1
P2
P3
(0,0) (0,1) (0,2) (0,3) (0,4) (0,5) (0,6) (0,7)
P0
P1
P2
P3
(1,0) (1,1) (1,2) (1,3) (1,4) (1,5) (1,6) (1,7)
P4
P5
P6
P7
P8
P9
P 10
P 11
(6,0) (6,1) (6,2) (6,3) (6,4) (6,5) (6,6) (6,7)
P 12
P 13
P 14
P 15
(7,0) (7.1) (7,2) (7,3) (7,4) (7,5) (7,6) (7,7)
Block-checkerboard partitioning
(0,0) (0,4) (0,1) (0,5) (0,2) (0,6) (0,3) (0,7)
P0
P1
P2
P3
(4,0) (4,4) (4,1) (4,5) (4,2) (4,6) (4,3) (4,7)
(1,0) (1,4)
P4
P5
P6
P7
(5,0) (5,4)
(2,0) (2,4)
P8
P9
P 10
P 11
(6,0) (6,4)
(3,0) (3,4)
P 12
P 13
P 14
P 15
(7,0) (7,4)
Cyclic-checkerboard partitioning
?)????0?!?'4?"51?26#??#3$!%??!?457$89@!4$&987'("&!$ $DDAdE(??eb1$#f2?&"R!#''!$$'S(!1!$%T1"!$&$#U#!&02V&!1&&!W#(U!"$(!?&'X3''$?1$FH0?aY!IE(&&QPbG&&$2?H!&&?g?$a'?$$&?&2!?0#a'01&(&'?B0c&`2"0!$!C!$"E"F&C"!CF hipqrstqiuvwxvrprxuxuhyv ded def gheee giejeed kmnoprsqltruvwstruxwpqs
(0,0)
P0
(0,1)
P1
(0,2)
P2
(0,3)
P3
(1,0)
P4
(1,1)
P5
(1,2)
P6
(1,3)
P7
(2,0)
P8
(2,1)
P9
(2,2)
P 10
(2,3)
P 11
(3,0)
P 12
(3,1)
P 13
(3,2)
P 14
(3,3)
P 15
Communication step in transposition
(0,1)
P0
(1,0)
P1
(2,0)
P2
(3,0)
P3
(0,1)
P4
(1,1)
P5
(2,1)
P6
(3,1)
P7
(0,2)
P8
(1,2)
P9
(2,2)
P 10
(3,2)
P 11
(0,3)
P 12
(1,3)
P 13
(2,3)
P 14
(3,3)
P 15
Final configuration
yz{|}~|z}{}| ????? ???????????????????????????????? ???????????????????????
(0,0) (0,1) (0,2) (0,3) (0,4) (0,5) (0,6) (0,7) (1,0) (1,1) (1,2) (1,3) (1,4) (1,5) (1,6) (1,7) (2,0) (2,1) (2,2) (2,3) (2,4) (2,5) (2,6) (2,7) (3,0) (3,1) (3,2) (3,3) (3,4) (3,5) (3,6) (3,7) (4,0) (4,1) (4,2) (4,3) (4,4) (4,5) (4,6) (4,7) (5,0) (5,1) (5,2) (5,3) (5,4) (5,5) (5,6) (5,7) (6,0) (6,1) (6,2) (6,3) (6,4) (6,5) (6,6) (6,7) (7,0) (7.1) (7,2) (7,3) (7,4) (7,5) (7,6) (7,7)
Divide matrix into four blocks
(0,0) (0,1) (0,2) (0,3) (4,0) (4,1) (4,2) (4,3) (1,0) (1,1) (1,2) (1,3) (5,0) (5,1) (5,2) (5,3) (2,0) (2,1) (2,2) (2,3) (6,0) (6,1) (6,2) (6,3) (3,0) (3,1) (3,2) (3,3) (7,0) (7,1) (7,2) (7,3) (0,4) (0,5) (0,6) (0,7) (4,4) (4,5) (4,6) (4,7) (1,4) (1,5) (1,6) (1,7) (5,4) (5,5) (5,6) (5,7) (2,4) (2,5) (2,6) (2,7) (6,4) (6,5) (6,6) (6,7) (3,4) (3,5) (3,6) (3,7) (7,4) (7,5) (7,6) (7,7)
Each block divided into four smaller blocks
(0,0) (0,1) (0,2) (0,3) (0,4) (0,5) (0,6) (0,7)
P0
P1
P2
P3
(1,0) (1,1) (1,2) (1,3) (1,4) (1,5) (1,6) (1,7)
(2,0) (2,1) (2,2) (2,3) (2,4) (2,5) (2,6) (2,7)
P4
P5
P6
P7
(3,0) (3,1) (3,2) (3,3) (3,4) (3,5) (3,6) (3,7)
(4,0) (4,1) (4,2) (4,3) (4,4) (4,5) (4,6) (4,7)
P8
P9
P 10
P 11
(5,0) (5,1) (5,2) (5,3) (5,4) (5,5) (5,6) (5,7)
(6,0) (6,1) (6,2) (6,3) (6,4) (6,5) (6,6) (6,7)
P 12
P 13
P 14
P 15
(7,0) (7.1) (7,2) (7,3) (7,4) (7,5) (7,6) (7,7)
Communication pattern in first step
(0,0) (0,1) (0,2) (0,3) (4,0) (4,1) (4,2) (4,3)
P0
P1
P2
P3
(1,0) (1,1) (1,2) (1,3) (5,0) (5,1) (5,2) (5,3)
(2,0) (2,1) (2,2) (2,3) (6,0) (6,1) (6,2) (6,3)
P4
P5
P6
P7
(3,0) (3,1) (3,2) (3,3) (7,0) (7,1) (7,2) (7,3)
(0,4) (0,5) (0,6) (0,7) (4,4) (4,5) (4,6) (4,7)
P8
P9
P 10
P 11
(1,4) (1,5) (1,6) (1,7) (5,4) (5,5) (5,6) (5,7)
(2,4) (2,5) (2,6) (2,7) (6,4) (6,5) (6,6) (6,7)
P 12
P 13
P 14
P 15
(3,4) (3,5) (3,6) (3,7) (7,4) (7,5) (7,6) (7,7)
Communication pattern in second step
(0,0) (0,1) (2,0) (2,1) (4,0) (4,1) (6,0) (6,1) (1,0) (1,1) (3,0) (3,1) (5,0) (5,1) (7,0) (7,1) (0,2) (0,3) (2,2) (2,3) (4,2) (4,3) (6,2) (6,3) (1,2) (1,3) (3,2) (3,3) (5,2) (5,3) (7,2) (7,3) (0,4) (0,5) (2,4) (2,5) (4,4) (4,5) (6,4) (6,5) (1,4) (1,5) (3,4) (3,5) (5,4) (5,5) (7,4) (7,5) (0,6) (0,7) (2,6) (2,7) (4,6) (4,7) (6,6) (6,7) (1,6) (1,7) (3,6) (3,7) (5,6) (5,7) (7,6) (7,7)
Last subdivision and transposition
(0,0) (1,0) (2,0) (3,0) (4,0) (5,0) (6,0) (7,0) (0,1) (1,1) (2,1) (3,1) (4,1) (5,1) (6,1) (7,1) (0,2) (1,2) (2,2) (3,2) (4,2) (5,2) (6,2) (7,2) (0,3) (1,3) (2,3) (3,3) (4,3) (5,3) (6,3) (7,3) (0,4) (1,4) (2,4) (3,4) (4,4) (5,4) (6,4) (7,4) (0,5) (1,5) (2,5) (3,5) (4,5) (5,5) (6,5) (7,5) (0,6) (1,6) (2,6) (3,6) (4,6) (5,6) (6,6) (7,6) (0,7) (1,7) (2,7) (3,7) (4,7) (5,7) (6,7) (7,7)
Final configuration
????????????????????? %)B(!7"9(#&)$$%!%&&01'C)"%1%8&'()&30($$"7!"!9)$019%1$!'%0011"2)(%1!'0$(13$4105@!0#)(36%A!!6& D$0%1"B')(3%1(1"!3!04$%AD$!&B!(3A1E9)((6&$%($!0)6%F)()&$"71B8((1&%$(1!$"0%G)'H&1(I8$P(3HB4)"@!(929(('06 Q&!!'$%%160!F74%1D9B)(A7!)&&)BR(7(&&'"'02%(19S(1%TB"'%6%B&!'FB UVWGXPHY`abPcdeY`fGPHYXd`gPhipP
P0 P1 P2 P3
Transposition with striped partitioning
Processors Matrix A P0 P1
Vector x
0 1
n/p
Pp-1
p-1
P0
0
P1
1
Pp-1
p-1
????????????????? !"#$% &'()0 1%2#%3$4567#3$4!% 8'9@ ???ABCC?DE????F 1"!73#7%Q6$%4R7"1166G4P$7515$PT435HI6316S573G3%5H%HH%16%#56!1!$%!5$365$$H44I!13$10"74#S"$#5%$$7%4"037$G%45$1U6P "!5#175$6$644"%1664W75#X$934P@$3Y4Q!5a%3VUH415161#Pb!$1$!P%55!6$44S137W51HX$`P591"Y$$Q4W!$X59$65YT6
Processors Matrix A P0 P1
Vector y
0 1
n/p
Pp-1
p-1
a 11
a 12
a 13
.....
a 1,p-1
P0
x0
x1
x2
.....
xp-1
P1
0
1
p-1
0
p-1
0
p-1
Pp-1
0
p-1
"?)$'5A%#$?(5#0?0!?'#&?$$('?0!0#($$'?'#9!G$2?5Y!1$%`'#!0?6a%0"$'##?!?H?$?&I"b!$%P'##&QS1%R@$$#H??%B5I?&2C2SP?D?Q7!$?HRT?$?$??8#Ua?#'E$S$'F%3d$?H#T1VUG5U??#%?V'$4cW#'$X$!?%V#"?!''!(#0& ????????????????????????
?????????? ?? ??????
??????? ??????????
q{yexyzvyf|ghyqr}|iq~lyrpgmy}ygyqnstyyrr|pqohqsqq|itd}uerfvqpxgwftfffdugewthfqzfpiyfytjqgdhpryiknpjhryudprdyrfprhvgyhw lnppijrp
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