Loop(block)

Question

plz pay attention to question especially(masijade. ) i won't ask u for childdish code
sry for that.
one more error
the code u give me doesn't work for the subblock which is 2x2 and more than 2 dimension
how to write the code
to multiply each processor block using multithreading
for example,
A
1 2 3 4 5 6 7 8
3 4 5 6 7 8 9 10
5 6 7 8 1 2 3 4
7 8 9 10 3 4 5 6
B
5 6 7 8
7 8 9 10
1 2 3 4
3 4 5 6
subblock 1 from A
1 2
3 4
multiply with subblock 1 from B
5 6
7 8
result
A(1)*B(1)
each multiplication of processor runs on one processor
how do i do that?
how to write the loop for that?
Besides after each run, i need to shift A to left by one block and B to up by one block
until (i=0;i<s;i++)
i is just a counter
s is sqrt(p) <<<where p stands for number of processors
for reference

Answer 1

you will understand it without the original thread.
A=[block1 block2]
[block3 block4]
A
1 2 3 4
3 4 5 6
5 6 7 8
7 8 9 10
B
5 6 7 8
7 8 9 10
1 2 3 4
3 4 5 6
subblock 1 from A
1 2
3 4
multiply with subblock 1 from B
5 6
7 8
result:[19 22]
[43 50]
again
do it for subblock2
if the subblock is 1x1, i can do it by writing the code below
for(i=0;i<m;i++) {
for(k=0;k<m;k++) {
C[i][k] += A[i][k]*B[i][k]; // you said c(0,1) + a(0,1) * b(0,1)
// I assume this may wind up being done multiple times, or something?
for 2x2 matrix, i is 2 instead of initial one..so i need to do some work there
don't know how to do it..
just simple like that
no need to know the previous thread.
thanks
subblock 2 from A get multiplied with subblock2 from B