Add read buffer/image benchmark.

Add there two benchmark to compare the buffer and image performance

V2: init the coord before read image.
V3: Correct the image's width and buffer's read index.
Signed-off-by: Yang Rong <rong.r.yang@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

3 files changed, 119 insertions, 1 deletions

diff --git a/benchmark/CMakeLists.txt b/benchmark/CMakeLists.txt
index ac2d8aad..9a2bd776 100644
--- a/benchmark/CMakeLists.txt
+++ b/benchmark/CMakeLists.txt
@@ -12,7 +12,9 @@ set (benchmark_sources
   ../utests/utest_helper.cpp
   ../utests/vload_bench.cpp
   enqueue_copy_buf.cpp
-  benchmark_use_host_ptr_buffer.cpp)
+  benchmark_use_host_ptr_buffer.cpp
+  benchmark_read_buffer.cpp
+  benchmark_read_image.cpp)
 
 
 SET(CMAKE_CXX_FLAGS "-DBUILD_BENCHMARK ${CMAKE_CXX_FLAGS}")
diff --git a/benchmark/benchmark_read_buffer.cpp b/benchmark/benchmark_read_buffer.cpp
new file mode 100644
index 00000000..31a1f599
--- /dev/null
+++ b/benchmark/benchmark_read_buffer.cpp
@@ -0,0 +1,49 @@
+#include "utests/utest_helper.hpp"
+#include <sys/time.h>
+
+int benchmark_read_buffer(void)
+{
+  struct timeval start,stop;
+
+  const size_t n = 1024 * 1024;
+  int count = 16;
+  const size_t sz = 4 * n * count;
+
+  OCL_CREATE_BUFFER(buf[0], 0, sz * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, sz * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[2], 0, sz * sizeof(float), NULL);
+
+  OCL_CREATE_KERNEL("compiler_read_buffer");
+
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
+
+  OCL_MAP_BUFFER(0);
+  OCL_MAP_BUFFER(1);
+  for (size_t i = 0; i < sz; i ++) {
+    ((float *)(buf_data[0]))[i] = rand();
+    ((float *)(buf_data[1]))[i] = rand();
+  }
+  OCL_UNMAP_BUFFER(0);
+  OCL_UNMAP_BUFFER(1);
+
+  // Setup kernel and buffers
+  globals[0] = n;
+  locals[0] = 256;
+
+  gettimeofday(&start,0);
+  for (size_t i=0; i<100; i++) {
+    OCL_NDRANGE(1);
+  }
+  OCL_FINISH();
+  gettimeofday(&stop,0);
+
+  clReleaseMemObject(buf[0]);
+  free(buf_data[0]);
+  buf_data[0] = NULL;
+
+  return time_subtract(&stop, &start, 0);
+}
+
+MAKE_BENCHMARK_FROM_FUNCTION(benchmark_read_buffer);
diff --git a/benchmark/benchmark_read_image.cpp b/benchmark/benchmark_read_image.cpp
new file mode 100644
index 00000000..48aa9871
--- /dev/null
+++ b/benchmark/benchmark_read_image.cpp
@@ -0,0 +1,67 @@
+#include <string.h>
+#include "utests/utest_helper.hpp"
+#include <sys/time.h>
+
+int benchmark_read_image(void)
+{
+  struct timeval start,stop;
+
+  const size_t x_count = 4;
+  const size_t y_count = 4;
+  const size_t w = 1024;
+  const size_t h = 1024;
+  const size_t sz = 4 * x_count * y_count * w * h;
+  cl_image_format format;
+  cl_image_desc desc;
+
+  memset(&desc, 0x0, sizeof(cl_image_desc));
+  memset(&format, 0x0, sizeof(cl_image_format));
+
+  // Setup kernel and images
+  OCL_CREATE_KERNEL("compiler_read_image");
+  buf_data[0] = (uint32_t*) malloc(sizeof(float) * sz);
+  buf_data[1] = (uint32_t*) malloc(sizeof(float) * sz);
+  for (uint32_t i = 0; i < sz; ++i) {
+    ((float*)buf_data[0])[i] = rand();
+    ((float*)buf_data[1])[i] = rand();
+  }
+
+  format.image_channel_order = CL_RGBA;
+  format.image_channel_data_type = CL_FLOAT;
+  desc.image_type = CL_MEM_OBJECT_IMAGE2D;
+  desc.image_width = w * x_count;
+  desc.image_height = h * y_count;
+  desc.image_row_pitch = desc.image_width * sizeof(float) * 4;
+  OCL_CREATE_IMAGE(buf[0], CL_MEM_COPY_HOST_PTR, &format, &desc, buf_data[0]);
+  OCL_CREATE_IMAGE(buf[1], CL_MEM_COPY_HOST_PTR, &format, &desc, buf_data[1]);
+  OCL_CREATE_BUFFER(buf[2], 0, sz * sizeof(float), NULL);
+
+  free(buf_data[0]);
+  buf_data[0] = NULL;
+  free(buf_data[1]);
+  buf_data[1] = NULL;
+
+  // Run the kernel
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
+  globals[0] = w;
+  globals[1] = h;
+  locals[0] = 16;
+  locals[1] = 16;
+
+  gettimeofday(&start,0);
+  for (size_t i=0; i<100; i++) {
+    OCL_NDRANGE(2);
+  }
+  OCL_FINISH();
+  gettimeofday(&stop,0);
+
+  clReleaseMemObject(buf[0]);
+  free(buf_data[0]);
+  buf_data[0] = NULL;
+
+  return time_subtract(&stop, &start, 0);
+}
+
+MAKE_BENCHMARK_FROM_FUNCTION(benchmark_read_image);