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Diffstat (limited to 'omegalib/examples/hpf.out')
-rw-r--r-- | omegalib/examples/hpf.out | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/omegalib/examples/hpf.out b/omegalib/examples/hpf.out new file mode 100644 index 0000000..3ee21e7 --- /dev/null +++ b/omegalib/examples/hpf.out @@ -0,0 +1,59 @@ +>>> # Example taken from +>>> # @INPROCEEDINGS{delft, +>>> # author = {Corinne Ancourt and Fabien Coelho and Fran\c{c}ois Irigoin +>>> # and Ronan Keryell}, +>>> # title = {A Linear Algebra Framework for Static HPF Code Distribution}, +>>> # booktitle = {Proceedings of the Fourth International Workshop +>>> # on Compilers for Parallel Computers}, +>>> # year = 1993, +>>> # month = dec, +>>> # pages = {117-132}, +>>> # publisher = {Delft University of Technology} +>>> # } +>>> # +>>> # Generate local code for this HPF code fragment +>>> # !HPF$ template T(0:150,0:150) +>>> # !HPF$ align Y(I,J) with T(3*I,3*J) +>>> A := { [i,j] -> [3i,3j] }; +>>> # !HPF$ processors P(0:3, 0:3) +>>> # !HPF$ distribute +>>> # !HPF$ T(cyclic(4), cyclic(4)) onto P +>>> D := { [t1,t2] -> [p1,p2,c1,c2,o1,o2] : +>>> t1 = 16c1+4p1+o1 +>>> && t2 = 16c2+4p2+o2 +>>> && 0 <= p1,p2 <= 3 +>>> && 0 <= o1,o2 <= 3 }; +>>> # +>>> # do I = 0, 14 +>>> # Y(I,I) = 1.0 +>>> # enddo +>>> # +>>> I := { [i] : 0 <= i <= 14 }; +>>> Y := { [i] -> [i,i] }; +>>> R := D(A(Y(I))); +>>> R; +{[p1,p1,c1,c1,o1,o1]: exists ( alpha : p1+o1+c1 = 3alpha && 0 <= p1 <= 3, -c1+4 && 0 <= o1 <= 3 && 0 <= c1 <= 2)} +>>> +>>> symbolic P1,P2; +>>> selectLocal := {[P1,P2,c1,c2,o1,o2] -> [c1,c2,o1,o2]}; +>>> # We want to iteration the chunk and offset values +>>> # of Y touched by this statement. +>>> # the code given in the above paper is: +>>> # do u3 = 0, 2 +>>> # do u4 = 0, 2 +>>> # do u5 = max(max(0,intDiv(2+4*p1+16*u3,3)),intDiv(2+4*p2+16*u4),3), +>>> # min(min(14,intDiv(3+4*p1+16*u3,3)),intDiv(3+4*p2+16*u4,3)) +>>> # u6 = intDiv(3*u5-4*p1-16*u3,3) +>>> # s1[u3,u4,u5,u6] +>>> # +>>> # We generate: +>>> codegen selectLocal(R); +if (P1 == P2 && P1 >= 0 && P1 <= 3) { + for(t1 = 0; t1 <= min(-P1+4,2); t1++) { + for(t3 = intMod(-P1-t1,3); t3 <= 3; t3 += 3) { + s0(t1,t1,t3,t3); + } + } +} + +>>> |