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--- tiled_code_generator_dtiler [2014/12/11 19:50]
yun
+++ tiled_code_generator_dtiler [2017/04/19 13:31] (current)
@@ Line 1: / Line 1: @@
-Tiling is an important program transformation that is used to improve data locality and parallelization granularity. We provide a tiled code generator that produces tiled code that tiles bands of the program dimensions, wavefront parallelization on shared memory machine is also supported.
+======Tiled Code Generator======
+Tiling is an important program transformation that is used to improve data locality and parallelization granularity. We provide a tiled code generator that produces tiled code with wavefront parallelization supported for the shared memory machine.
+===Usage===
+Let's use the classic matrix multiplication as an illustration example, whose alphabets code is the following:
+<sxh alphabets; gutter:true>
+affine matrix_product {P, Q, R|P>0 && Q>0 && R>0}
+       given  float A {i,k| 0<=i<P && 0<=k<Q};
+              float B {k,j| 0<=k<Q && 0<=j<R};
+     returns  float C {i,j,k| 0<=i<P && 0<=j<R && k==Q};
+using
+   float temp_C {i,j,k|0<=i<P && 0<=j<R && 0<=k<=Q};
+through
+   temp_C[i,j,k] = case
+                      {|k>0}  : temp_C[i,j,k-1] + A[i,k-1]*B[k-1,j];
+                      {|k==0} : 0;
+                   esac;
+   C      = temp_C;
+.
+</sxh>
+The tiled code generator is called through ScheduledC, therefore, the first step for the code generation is the same with ScheduledC -- specify spacetime map and memory map.

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