From 354b0cbdcb48a66de1af3aca9fc2f5687e46ee42 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Sat, 19 Apr 2014 20:10:59 +0000
Subject: [PATCH] GPU flag in Makefile
---
src/gpu_gemm.c | 83 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 83 insertions(+), 0 deletions(-)
diff --git a/src/gpu_gemm.c b/src/gpu_gemm.c
index 26bb3fe..4a8aaca 100644
--- a/src/gpu_gemm.c
+++ b/src/gpu_gemm.c
@@ -83,6 +83,89 @@
}
+void time_gpu_random_matrix(int TA, int TB, int m, int k, int n)
+{
+ float *a;
+ if(!TA) a = random_matrix(m,k);
+ else a = random_matrix(k,m);
+ int lda = (!TA)?k:m;
+ float *b;
+ if(!TB) b = random_matrix(k,n);
+ else b = random_matrix(n,k);
+ int ldb = (!TB)?n:k;
+
+ float *c = random_matrix(m,n);
+ int i;
+ clock_t start = clock(), end;
+ for(i = 0; i<1000; ++i){
+ gpu_gemm(TA,TB,m,n,k,1,a,lda,b,ldb,1,c,n);
+ }
+ end = clock();
+ printf("Matrix Multiplication %dx%d * %dx%d, TA=%d, TB=%d: %lf ms\n",m,k,k,n, TA, TB, (float)(end-start)/CLOCKS_PER_SEC);
+ free(a);
+ free(b);
+ free(c);
+}
+
+void test_gpu_accuracy(int TA, int TB, int m, int k, int n)
+{
+ srand(0);
+ float *a;
+ if(!TA) a = random_matrix(m,k);
+ else a = random_matrix(k,m);
+ int lda = (!TA)?k:m;
+ float *b;
+ if(!TB) b = random_matrix(k,n);
+ else b = random_matrix(n,k);
+ int ldb = (!TB)?n:k;
+
+ float *c = random_matrix(m,n);
+ float *c_gpu = random_matrix(m,n);
+ memset(c, 0, m*n*sizeof(float));
+ memset(c_gpu, 0, m*n*sizeof(float));
+ int i;
+ //pm(m,k,b);
+ gpu_gemm(TA,TB,m,n,k,1,a,lda,b,ldb,1,c_gpu,n);
+ //pm(m, n, c_gpu);
+ cpu_gemm(TA,TB,m,n,k,1,a,lda,b,ldb,1,c,n);
+ //pm(m, n, c);
+ double sse = 0;
+ for(i = 0; i < m*n; ++i) {
+ //printf("%f %f\n", c[i], c_gpu[i]);
+ sse += pow(c[i]-c_gpu[i], 2);
+ }
+ printf("Matrix Multiplication %dx%d * %dx%d, TA=%d, TB=%d: %g MSE\n",m,k,k,n, TA, TB, sse/(m*n));
+ free(a);
+ free(b);
+ free(c);
+}
+
+void test_gpu_blas()
+{
+ test_gpu_accuracy(0,0,17,10,10);
+ test_gpu_accuracy(1,0,17,10,10);
+ test_gpu_accuracy(0,1,17,10,10);
+ test_gpu_accuracy(1,1,17,10,10);
+
+ test_gpu_accuracy(0,0,1000,10,100);
+ test_gpu_accuracy(1,0,1000,10,100);
+ test_gpu_accuracy(0,1,1000,10,100);
+ test_gpu_accuracy(1,1,1000,10,100);
+
+ time_gpu_random_matrix(0,0,1000,1000,100);
+ time_random_matrix(0,0,1000,1000,100);
+
+ time_gpu_random_matrix(0,1,1000,1000,100);
+ time_random_matrix(0,1,1000,1000,100);
+
+ time_gpu_random_matrix(1,0,1000,1000,100);
+ time_random_matrix(1,0,1000,1000,100);
+
+ time_gpu_random_matrix(1,1,1000,1000,100);
+ time_random_matrix(1,1,1000,1000,100);
+
+}
+
/*
cl_kernel get_gemm_kernel_slow()
{
--
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