data: cat SGEMM files from 3 repos into cat_files/

siboehm/SGEMM_CUDA (19 files):
  siboehm_sgemm.cu, siboehm_runner.cu, siboehm_runner.cuh, siboehm_kernels.cuh
  siboehm_cuBLAS_sgemm.cu, siboehm_simplest_kernel.cu, siboehm_CMakeLists.txt
  siboehm_{1_naive..12_kernel_double_buffering}.cuh

wangzyon/NVIDIA_SGEMM_PRACTICE (12 files):
  wangzyon_sgemm.cu, wangzyon_utils.cu, wangzyon_utils.cuh, wangzyon_kernel.cuh
  wangzyon_CMakeLists.txt, wangzyon_kernel_{1..7}.cuh

edtallison/sgemm-cuda (19 files):
  edtallison_sgemm.cu, edtallison_runner.cu, edtallison_runner.cuh
  edtallison_kernels.cuh, edtallison_cuBLAS_sgemm.cu, edtallison_simplest_kernel.cu
  edtallison_CMakeLists.txt, edtallison_{01_naive..12_kernel_double_buffering}.cuh

cat_files/ total: 25 → 75 files

cat_files/siboehm_1_naive.cuh

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <cstdio>
+#include <cstdlib>
+#include <cublas_v2.h>
+#include <cuda_runtime.h>
+
+/*
+
+Matrix sizes:
+MxK * KxN = MxN
+
+*/
+
+__global__ void sgemm_naive(int M, int N, int K, float alpha, const float *A,
+                            const float *B, float beta, float *C) {
+  const uint x = blockIdx.x * blockDim.x + threadIdx.x;
+  const uint y = blockIdx.y * blockDim.y + threadIdx.y;
+
+  // if statement is necessary to make things work under tile quantization
+  if (x < M && y < N) {
+    float tmp = 0.0;
+    for (int i = 0; i < K; ++i) {
+      tmp += A[x * K + i] * B[i * N + y];
+    }
+    // C = α*(A@B)+β*C
+    C[x * N + y] = alpha * tmp + beta * C[x * N + y];
+  }
+}