[GPU] Abstraction of cl_buffer_manager

Adding abstraction in cl_buffer_manager
using const for data size

Signed-off-by: Debadri Samaddar <s.debadri@samsung.com>

Author: s-debadri

nntrainer/cl_buffer_manager.cpp

@@ -22,20 +22,20 @@ ClBufferManager &ClBufferManager::getInstance() {
 // to-do: Implementation to be updated with array of Buffer objects if required
 // fp16 Buffer objects to be added in future
 void ClBufferManager::initBuffers() {
-  readBufferA = new opencl::Buffer(context_inst_, buffer_size_bytes, true);
-  readBufferB = new opencl::Buffer(context_inst_, buffer_size_bytes, true);
-  readBufferC = new opencl::Buffer(context_inst_, buffer_size_bytes, true);
-  writeBufferA = new opencl::Buffer(context_inst_, buffer_size_bytes, false);
-  writeBufferB = new opencl::Buffer(context_inst_, buffer_size_bytes, false);
+  inBufferA = new opencl::Buffer(context_inst_, buffer_size_bytes, true);
+  inBufferB = new opencl::Buffer(context_inst_, buffer_size_bytes, true);
+  inBufferC = new opencl::Buffer(context_inst_, buffer_size_bytes, true);
+  outBufferA = new opencl::Buffer(context_inst_, buffer_size_bytes, false);
+  outBufferB = new opencl::Buffer(context_inst_, buffer_size_bytes, false);
   ml_logi("ClBufferManager: Buffers initialized");
 }
 
 ClBufferManager::~ClBufferManager() {
-  delete readBufferA;
-  delete readBufferB;
-  delete readBufferC;
-  delete writeBufferA;
-  delete writeBufferB;
+  delete inBufferA;
+  delete inBufferB;
+  delete inBufferC;
+  delete outBufferA;
+  delete outBufferB;
   ml_logi("ClBufferManager: Buffers destroyed");
 }
 

nntrainer/cl_buffer_manager.h

@@ -34,7 +34,12 @@ class ClBufferManager {
    * @brief Private constructor to prevent object creation
    *
    */
-  ClBufferManager(){};
+  ClBufferManager() :
+    inBufferA(nullptr),
+    inBufferB(nullptr),
+    inBufferC(nullptr),
+    outBufferA(nullptr),
+    outBufferB(nullptr){};
 
   /**
    * @brief OpenCl context global instance
@@ -45,7 +50,13 @@ class ClBufferManager {
   /**
    * @brief Buffer size in bytes preset (256 mebibytes)
    */
-  size_t buffer_size_bytes = 8192 * 8192 * sizeof(float);
+  const size_t buffer_size_bytes = 8192 * 8192 * sizeof(float);
+
+  opencl::Buffer *inBufferA;
+  opencl::Buffer *inBufferB;
+  opencl::Buffer *inBufferC;
+  opencl::Buffer *outBufferA;
+  opencl::Buffer *outBufferB;
 
 public:
   /**
@@ -55,17 +66,41 @@ class ClBufferManager {
    */
   static ClBufferManager &getInstance();
 
-  opencl::Buffer *readBufferA;
-  opencl::Buffer *readBufferB;
-  opencl::Buffer *readBufferC;
-  opencl::Buffer *writeBufferA;
-  opencl::Buffer *writeBufferB;
-
   /**
    * @brief Initialize Buffer objects.
    */
   void initBuffers();
 
+  /**
+   * @brief Get read only inBufferA.
+   * @return opencl::Buffer* or nullptr if initBuffers() is not called
+   */
+  opencl::Buffer *getInBufferA() { return inBufferA; }
+
+  /**
+   * @brief Get read only inBufferB.
+   * @return opencl::Buffer* or nullptr if initBuffers() is not called
+   */
+  opencl::Buffer *getInBufferB() { return inBufferB; }
+
+  /**
+   * @brief Get read only inBufferC.
+   * @return opencl::Buffer* or nullptr if initBuffers() is not called
+   */
+  opencl::Buffer *getInBufferC() { return inBufferC; }
+
+  /**
+   * @brief Get read-write outBufferA.
+   * @return opencl::Buffer* or nullptr if initBuffers() is not called
+   */
+  opencl::Buffer *getOutBufferA() { return outBufferA; }
+
+  /**
+   * @brief Get read-write outBufferB.
+   * @return opencl::Buffer* or nullptr if initBuffers() is not called
+   */
+  opencl::Buffer *getOutBufferB() { return outBufferB; }
+
   /**
    * @brief Destroy Buffer pointers.
    *

nntrainer/tensor/cl_operations/blas_kernels.cpp

@@ -40,39 +40,39 @@ void sgemv_cl(const float *matAdata, const float *vecXdata, float *vecYdata,
     size_t dim1_size = sizeof(float) * dim1;
     size_t dim2_size = sizeof(float) * dim2;
 
-    result = clbuffInstance.readBufferA->WriteDataRegion(
+    result = clbuffInstance.getInBufferA()->WriteDataRegion(
       cl_context_ref.command_queue_inst_, dim1 * dim2 * sizeof(float),
       matAdata);
     if (!result) {
       break;
     }
 
-    result = clbuffInstance.readBufferB->WriteDataRegion(
+    result = clbuffInstance.getInBufferB()->WriteDataRegion(
       cl_context_ref.command_queue_inst_, dim2_size, vecXdata);
     if (!result) {
       break;
     }
 
-    result = clbuffInstance.writeBufferA->WriteDataRegion(
+    result = clbuffInstance.getOutBufferA()->WriteDataRegion(
       cl_context_ref.command_queue_inst_, dim1_size, vecYdata);
     if (!result) {
       break;
     }
 
-    result = kernel_sgemv_ptr->SetKernelArguments(0, clbuffInstance.readBufferA,
-                                                  sizeof(cl_mem));
+    result = kernel_sgemv_ptr->SetKernelArguments(
+      0, clbuffInstance.getInBufferA(), sizeof(cl_mem));
     if (!result) {
       break;
     }
 
-    result = kernel_sgemv_ptr->SetKernelArguments(1, clbuffInstance.readBufferB,
-                                                  sizeof(cl_mem));
+    result = kernel_sgemv_ptr->SetKernelArguments(
+      1, clbuffInstance.getInBufferB(), sizeof(cl_mem));
     if (!result) {
       break;
     }
 
     result = kernel_sgemv_ptr->SetKernelArguments(
-      2, clbuffInstance.writeBufferA, sizeof(cl_mem));
+      2, clbuffInstance.getOutBufferA(), sizeof(cl_mem));
     if (!result) {
       break;
     }
@@ -96,7 +96,7 @@ void sgemv_cl(const float *matAdata, const float *vecXdata, float *vecYdata,
       break;
     }
 
-    result = clbuffInstance.writeBufferA->ReadDataRegion(
+    result = clbuffInstance.getOutBufferA()->ReadDataRegion(
       cl_context_ref.command_queue_inst_, dim1_size, vecYdata);
     if (!result) {
       break;