multithreading tests from 152 lab 5

[riscv-tests.git] / mt / bs_matmul / matmul_mi.c

diff --git a/mt/bs_matmul/matmul_mi.c b/mt/bs_matmul/matmul_mi.c
new file mode 100644 (file)
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+++ b/mt/bs_matmul/matmul_mi.c
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+//**************************************************************************
+// Multi-threaded Matrix Multiply benchmark
+//--------------------------------------------------------------------------
+// TA     : Christopher Celio
+// Student: 
+//
+//
+// This benchmark multiplies two 2-D arrays together and writes the results to
+// a third vector. The input data (and reference data) should be generated
+// using the matmul_gendata.pl perl script and dumped to a file named
+// dataset.h. 
+
+
+// print out arrays, etc.
+//#define DEBUG
+
+//--------------------------------------------------------------------------
+// Includes 
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+//--------------------------------------------------------------------------
+// Input/Reference Data
+
+typedef float data_t;
+#include "dataset.h"
+ 
+  
+//--------------------------------------------------------------------------
+// Basic Utilities and Multi-thread Support
+
+__thread unsigned long coreid;
+unsigned long ncores;
+
+#include "util.h"
+   
+#define stringify_1(s) #s
+#define stringify(s) stringify_1(s)
+#define stats(code) do { \
+    unsigned long _c = -rdcycle(), _i = -rdinstret(); \
+    code; \
+    _c += rdcycle(), _i += rdinstret(); \
+    if (coreid == 0) \
+      printf("%s: %ld cycles, %ld.%ld cycles/iter, %ld.%ld CPI\n", \
+             stringify(code), _c, _c/DIM_SIZE/DIM_SIZE/DIM_SIZE, 10*_c/DIM_SIZE/DIM_SIZE/DIM_SIZE%10, _c/_i, 10*_c/_i%10); \
+  } while(0)
+ 
+
+//--------------------------------------------------------------------------
+// Helper functions
+    
+void printArray( char name[], int n, data_t arr[] )
+{
+   int i;
+   if (coreid != 0)
+      return;
+  
+   printf( " %10s :", name );
+   for ( i = 0; i < n; i++ )
+      printf( " %3ld ", (long) arr[i] );
+   printf( "\n" );
+}
+      
+void __attribute__((noinline)) verify(size_t n, const data_t* test, const data_t* correct)
+{
+   if (coreid != 0)
+      return;
+
+   size_t i;
+   for (i = 0; i < n; i++)
+   {
+      if (test[i] != correct[i])
+      {
+         printf("FAILED test[%d]= %3ld, correct[%d]= %3ld\n", 
+            i, (long)test[i], i, (long)correct[i]);
+         exit(-1);
+      }
+   }
+   
+   return;
+}
+ 
+//--------------------------------------------------------------------------
+// matmul function
+ 
+// single-thread, naive version
+void __attribute__((noinline)) matmul_naive(const int lda,  const data_t A[], const data_t B[], data_t C[] )
+{
+   int i, j, k;
+
+   if (coreid > 0)
+      return;
+  
+   for ( i = 0; i < lda; i++ )
+      for ( j = 0; j < lda; j++ )  
+      {
+         for ( k = 0; k < lda; k++ ) 
+         {
+            C[i + j*lda] += A[j*lda + k] * B[k*lda + i];
+         }
+      }
+
+}
+ 
+
+
+void __attribute__((noinline)) matmul(const int lda,  const data_t A[], const data_t B[], data_t C[] )
+{
+int i,j,k,a,b,b1,a1,a2,a3,c,c1,c2,c3,b2,b3;
+        for (j=coreid*4; j<lda; j+=8){
+                a=j*lda;
+                a1=(j+1)*lda;
+                a2=(j+2)*lda;
+                a3=(j+3)*lda;
+                for (k=0;k<lda; k+=2)
+                {
+                        b = k*lda;
+                        b1 = (k+1)*lda;
+                        for (i=0;i<lda;i++){
+                                c = B[b+i];
+                                c1 = B[b1+i];
+                                C[i+a]+=A[a+k]*c;
+                                C[i+a1]+=A[a1+k]*c;
+                                C[i+a2]+=A[a2+k]*c;
+                                C[i+a3]+=A[a3+k]*c;
+                                C[i+a]+=A[a+k+1]*c1;
+                                C[i+a1]+=A[a1+k+1]*c1;
+                                C[i+a2]+=A[a2+k+1]*c1;
+                                C[i+a3]+=A[a3+k+1]*c1;
+}
+}
+}
+
+   // ***************************** //
+   // **** ADD YOUR CODE HERE ***** //
+   // ***************************** //
+   //
+   // feel free to make a separate function for MI and MSI versions.
+}
+
+//--------------------------------------------------------------------------
+// Main
+//
+// all threads start executing thread_entry(). Use their "coreid" to
+// differentiate between threads (each thread is running on a separate core).
+  
+void thread_entry(int cid, int nc)
+{
+   coreid = cid;
+   ncores = nc;
+
+   // static allocates data in the binary, which is visible to both threads
+   static data_t results_data[ARRAY_SIZE];
+
+
+//   // Execute the provided, naive matmul
+//   barrier();
+//   stats(matmul_naive(DIM_SIZE, input1_data, input2_data, results_data); barrier());
+// 
+//   
+//   // verify
+//   verify(ARRAY_SIZE, results_data, verify_data);
+//   
+//   // clear results from the first trial
+//   size_t i;
+//   if (coreid == 0) 
+//      for (i=0; i < ARRAY_SIZE; i++)
+//         results_data[i] = 0;
+//   barrier();
+
+   
+   // Execute your faster matmul
+   barrier();
+   stats(matmul(DIM_SIZE, input1_data, input2_data, results_data); barrier());
+ 
+#ifdef DEBUG
+   printArray("results:", ARRAY_SIZE, results_data);
+   printArray("verify :", ARRAY_SIZE, verify_data);
+#endif
+   
+   // verify
+   verify(ARRAY_SIZE, results_data, verify_data);
+   barrier();
+
+   exit(0);
+}
+